WHAT MOVES YOUR WORLD
DIRECT DRIVE
DIGITAL CONTROL
SERVO VALVES
PRESSURE (p) AND
PRESSURE-FLOW (pQ) CONTROL
D638 SIZE 03
D639 SIZE 05
HIGH-PERFORMANCE PRESSURE CONTROL
WITH HIGHER DYNAMICS AND THE ABILITY TO
EASILY AND EXACTLY TUNE THE PRESSURE
CONTROLLER GAIN
Rev.-, March 2014
2Rev.-, March 2014
INTRODUCTION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
Whenever the highest levels of motion control
performance and design flexibility are required, you’ll find
Moog expertise at work. Through collaboration, creativity
and world-class technological solutions, we help you
overcome your toughest engineering obstacles. Enhance
your machine‘s performance. And help take your thinking
further than you ever thought possible.
INTRODUCTION ..........................................................................2
Product Overview ..............................................................3
Description of operation ................................................4
Features and Benefits .....................................................6
TECHNICAL DATA .....................................................................7
Size 03 - D638 Servo Valve ........................................7
Size 05 - D639 Servo Valve ........................................12
Electronics ............................................................................17
BACKGROUND ............................................................................23
Description of operation (Modes) ..............................23
Flow calculation ..................................................................27
Electronics ............................................................................28
Fieldbus Interface ..............................................................29
Configuration Software ...................................................30
ORDERING INFORMATION ....................................................31
Accessories and Spare Parts .......................................31
Installation Drawings ........................................................35
Moog Global Support .......................................................37
Ordering Code .....................................................................38
This catalog is for users with technical knowledge. To ensure all necessary characteristics for function and safety of the system, the user has
to check the suitability of the products described herein. The products described herein are subject to change without notice. In case of doubt,
please contact Moog.
Moog is a registered trademark of Moog Inc. and its subsidiaries. All trademarks as indicated herein are the property of Moog Inc. and its
subsidiaries. For the full disclaimer refer to www.moog.com/literature/disclaimers.
For the most current information, visit www.moog.com/industrial or contact your local Moog office.
3Rev.-, March 2014
INTRODUCTION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
PRODUCT OVERVIEWPRODUCT OVERVIEW
The Moog Digital Control Servo Valves (DCV) are closed-
loop hydraulic products that are used in industrial
machinery to precisely control fluid flow, pressure,
position or force using advanced digital fieldbuses for
communication (e.g. EtherCAT, PROFIBUS-DP, CANopen)
or analog interfaces. The D638 and D639 series are
equipped with an integrated pressure sensor in the
A-channel as well as a digital pressure controller and are
thus a compact pressure control unit.
For maximum flexibility, customers can choose to have
an analog interface, fieldbus interface (e.g., EtherCAT,
PROFIBUS DP, CANopen) or both combined in the same
valve. Whether you need pressure (p) or flow and pressure
limiting (pQ) control, this valve series has world-class,
proven technology that makes it the performance leader
in providing advanced functionality such as higher
dynamics, easy parameter tuning and adaptation of flow
characteristics.
With a robust design that offers proven reliability in some
of the world’s most demanding environments such as oil
rigs, offshore wind turbines and steel mills, these valves
can be tailored to your exact performance requirements.
With proven hydraulic motion control and application
expertise, Moog can help you select the version that best
meets your needs.
This series also has a version certified for use in
potentially hazardous environments (e.g., Explosion-Proof)
with hot-swappable connectors and proven ability to
withstand vibration and heavy use. Equipment protection
with flameproof enclosures “d” and increased safety “e”
with marking: II 2G Ex de IIC T5/T4/T3 Gb. For explosion
proof valves technical data (outer dimensions and wiring)
please contact Moog.
D638 Servo Valve D639 Servo Valve
Valve design 1-stage, with spool and bushing
Size according ISO 4401 03 05
Mounting pattern ISO 4401-03-03-0-05 (with or
without leakage oil connection Y)
ISO 4401-05-05-0-05 (with or
without leakage oil connection Y)
Rated flow at Δp
N
35 bar (500 psi)/spool land 5/10/20/40 l/min
(1.3/2.6/5.3/10.6 gpm)
60/100 l/min
(15.9/26.4 gpm)
Maximum flow 75 l/min (19.8 gpm) 180 l/min (47.6 gpm)
Maximum operating pressure - port P, A, B 350 bar (5,000 psi)
Step response time for 0 to 100 % stroke 8 ms 13 and 16 ms
Control loop consisting of valve with integrated pQ control and
cylinder
Q
u
p
A
p
F
v
s
s
Spool
Actuator
pQ
Control
Q
Command
p
Command
F Force
p Pressure
p
Command
Pressure command signal
p
A
Pressure actual value
Q Flow
Q
Command
Flow command signal
s
Actuator
Actuator position
s
Spool
Spool stroke position
u Correcting variable
v Velocity
4Rev.-, March 2014
INTRODUCTION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
Direct Drive Digital Control Valves with p and pQ Control
Direct Drive Digital Control Valves
The D638 and D639 Series Valves, sizes 03 and 05 are
Direct Drive Servo Valves. The valves are control valves
for 2-, 2x2-, 3- and 4-way applications and are suitable for
electrohydraulic control of pressure and flow even under
high dynamic requirements.
Design and Application
A permanent magnet linear force motor is used to drive
the spool. In contrast to proportional solenoid drives,
the linear force motor drives the spool in both working
directions from the spring-centered middle position. The
strong actuating force of the spool, provides Moog Servo
Valves with excellent static and dynamic characteristics.
p and pQ Functionality
The valves provide full pressure (p) and flow with pressure
limiting (pQ) functionality. By using the pQ option of the
D638 and D639 series, the control of flow and pressure
is possible with just one valve instead of using 2 valves as
in the past. The selection of p or pQ control mode can be
made via the fieldbus interface.
Fieldbus Interface
A built-in fieldbus interface (e.g. CANopen, PROFIBUS-DP
or EtherCAT) enables operating parameters to be set,
activates the valve and monitors its performance. To
reduce wiring, the fieldbus interface is provided with 2
connectors. DCVs may be integrated into the bus without
any external T-joints. In addition, up to 2 analog input
commands and up to 2 analog actual value outputs are
available. The valves are also available without a fieldbus
interface. In this case, the valve is controlled using analog
inputs. Valve parameters are set using the integrated M8
service connector X10.
Axis Control
Axis Control functionality can also be added to the
valve enabling closing of the external control loop and
decentralized control in an automation system, all
within the valve device. Data from external sensors
can be evaluated by up to 3 analog inputs (V/A), SSI or
Wheatstone Bridge.
For more information please see our Axis Control
Valves catalogs or contact our application engineers for
assistance.
Tuning of Pressure Controller Prior to Operation
The pressure control function can be modified by adjusting
parameters in the valve software (i.e. linearization,
ramping, etc.). Moog Valve and Pump Configuration
Software parameters can be saved in different sets for
specific tunings.
When sending to Moog, parameter sets can be used for
next valve configuration or for next valve deliveries with
customer specific settings.
5Rev.-, March 2014
INTRODUCTION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
Direct Drive Servo Valves with Integrated Digital
Electronics and Integrated Pressure Sensor
• Fieldbus data transfer: Electrically isolated fieldbus
interface
• Diagnostic capabilities: Integrated monitoring of
important ambient and internal data. Valve parameters
can be changed on site or remotely
• Flexibility: Since parameters may be downloaded
using the fieldbus or a high level PLC program, valve
parameters may be tuned during a machine cycle while
the machine is operating
• Pressure control configuration: Up to 16
configurations may be saved and can be activated
during operation
• Volume flow and pressure control using a single servo
valve
• Direct drive with permanent magnet linear force
motor that provides high actuating force, works in 2
directions
• Pilot oil not required
• Pressure-independent dynamic response
• Low hysteresis and high response characteristics
• Low power demand at and in the proximity of hydraulic
zero. Hydraulic zero is the spool position at which
the pressure of a symmetrical spool are equal in both
blocked control ports
• If the electrical supply fails, a cable breaks or
emergency stop is activated, the spool returns to the
predefined spring-centered position without passing
a fully open control port position (fail-safe) increasing
safety
Description of Operation of the Permanent Magnet
Linear Force Motor
The linear force motor is a permanent magnet excited
differential motor.
Some of the magnetic force is already provided by the
permanent magnets. This, using the same size, the force of
the linear force motor is 2 to 3 times higher than the force
produced by a proportional magnet and thereby results in
a significantly lower power demand than the comparable
proportional solenoid.
The linear force motor drives the servo valve’s spool. The
spool starting position is determined in the de-energized
state by the centering springs. The linear force motor
enables the spool to be deflected from the starting
position in both directions. The actuating force of the
linear force motor is proportional to the coil current.
The high forces of the linear force motor and centering
springs effect precise spool movement even against flow
and frictional forces.
D638 Series Direct Drive Servo Valve
10 911
21
6 7 8
5
4
3
12
T A YBP
1 Fieldbus connector X4
2 Fieldbus connector X3
3 Valve connector X1
4 Service connector X10
5 Venting screw
6 Spool
7 Bushing
8 Linear force motor
9 Ports
10 Pressure transducer
11 Position transducer (LVDT)
12 Status LEDs
6Rev.-, March 2014
INTRODUCTION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
FEATURES AND BENEFITSFEATURES AND BENEFITS
Features Benefits
All Digital Control Valves
Moog offers the ability to exactly tailor hardware,
configurations and functionality to the customer’s
application need
Optimize machine performance to gain competitive
advantages
Improved dynamics over traditional proportional valve
technology due to high performance design of hardware
and software
Increases machine performance in areas such as higher
acceleration, improved accuracy, leading to enhanced
machine productivity
Availability of ATEX and IECEx approved versions with
hot-swappable connectors and proven ability to withstand
vibration and heavy use
Proven, reliable product for use in hazardous
environments such as Oil and Gas Production
Availability of EtherCAT, Profibus and CANopen fieldbus
communications and follow all relevant international
standards
Proven technology that can be easily integrated in the
customer’s machine automation system, allowing for easy
commissioning and tuning
Fieldbus connection allows reduced cabeling and less
analog input/output (I/O) modules in complex systems
Save space and costs while obtaining more machine
flexibility
Availability of diagnostic and condition monitoring data in
the valve
Helps customers manage life cycle of the valve in order to
optimize maintenance costs
Factory preset parameters optimized for flow control
functionality
Valves are plug-and-play from the factory , offering
higher accuracy and reducing your risk of installing new
technology
Advanced tuning functionality such as non-linear flow
curves and a variety of other parameters for complex
machine operations via Moog Configuration software
Allows machine optimization and tailoring to exact
customer specifications
D638 and D639 Series
Integrated pressure sensor Eliminate the need for an external pressure sensor and
controller plus reduce cabling
Several sets of parameters allow switching between
different pressure levels
Optimal pressure control at different operating points
Smooth transition from flow to pressure control due to
sophisticated internal algorithms
Higher quality of end products, greater machine
productivity and smooth process flow
One-to-one replacement of valve with new versions
with the exact pressure control, performance and
configuration
• Reduce machine lifetime operating costs and lower
complexity of supply chain
• Seamless upgrades with ability to use latest
functionality
Easily configure pressure control parameters via Moog
Configuration Software or use factory presets
• Easy repeatable commissioning and fast tuning on-site
if needed
• Improved performance as PID and other critical
parameters are exactly set to optimize your
application
• Reduce risk of using new technology, save time due to
exact repeatable settings
Can optimize pressure control or other parameter through
the fieldbus on the fly while the machine is running
Actively tuned system enables compensation for system
changes over time and yields higher finished part quality
7Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 03 - D638 SERVO VALVESIZE 03 - D638 SERVO VALVE
General Technical Data
Valve design 1-stage, with spool and bushing
Mounting pattern ISO 4401-03-03-0-05
(with or without leakage oil connection Y)
Installation position
In all orientations, venting screw has to be on top during venting
Weight 2.5 kg (5.5 lb)
Storage temperature range -40 to +80 °C (-40 to +176 °F)
Ambient temperature range -20 to +60 °C (-4 to +140 °F)
Vibration resistance 30 g, 3 axis, 10 Hz to 2 kHz
Shock resistance 50 g, 6 directions
MTTF
d
value according to EN ISO 13849-1 150 years
Hydraulic Data
Maximum operating pressure
Port P, A, B 350 bar (5,000 psi)
Port T without Y 50 bar (725 psi)
Port T with Y 350 bar (5,000 psi)
Port Y Depressurized to tank
1)
Rated flow at Δp
N
35 bar (500 psi)/spool land 5 l/min
(1.3 gpm)
10 l/min
(2.6 gpm)
20 l/min
(5.3 gpm)
40 l/min
(10.6 gpm)
Maximum flow 75 l/min (19.8 gpm)
Leakage flow (rate) (≈ zero lap)
2)
0.15 l/min
(0.04 gpm)
0.3 l/min
(0.08 gpm)
0.6 l/min
(0.16 gpm)
1.2 l/min
(0.32 gpm)
Hydraulic fluid Hydraulic oil as per DIN 51524 parts 1 to 3 and ISO 11158.
Other fluids upon request.
Temperature range -20 to +80 °C (-4 to +176 °F)
Viscosity range
Recommended viscosity range at 38 °C (100 °F) 15 to 100 mm
2
/s (cSt)
Maximum permissible viscosity range at 38 °C (100 °F) 5 to 400 mm
2
/s (cSt)
Recommended cleanliness class as per ISO 4406
For functional safety 18/15/12
For longer service life 17/14/11
Typical Static and Dynamic Data
2)
Step response time for 0 to 100 % stroke 8 ms
Threshold, typical (for Q control) < 0.05 %
Threshold, maximum (for Q control) < 0.1 %
Hysteresis, typical (for Q control) < 0.05 %
Hysteresis, maximum (for Q control) < 0.1 %
Null shift at ΔT = 55 K (131 °F) (for Q control) < 1.5 %
Sample deviation of rated flow < 3 %
1) In order to avoid an emptying of the return line, a back-pressure of 2 bar (29 psi) should be maintained on the T, T1 and Y
connections.
2) Measured at 140 bar (2,000 psi) pilot or system pressure, oil viscosity 32 mm
2
/s and oil temperature 40 °C (104 °F)
8Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 03 - D638 SERVO VALVESIZE 03 - D638 SERVO VALVE
Electrical Data
Duty cycle 100 %
Degree of protection according to EN 60529 IP65 with mounted mating plugs
Supply voltage
3)
18 to 32 V
DC
Permissible ripple of supply voltage
4)
±3 V
RMS
Maximum current consumption
5)
1.7 A
Power consumption of the motor in middle position 9.6 W (0.4 A at 24 V
DC
)
Power consumption maximum 28.8 W (1.2 A at 24 V
DC
)
Fuse protection, external, per valve 2 A (slow)
EM compatibility • Emitted interference as per EN 61000-6-4:2005
(CAN open and PROFIBUS-DP)
• Emitted interference as per EN 61000-6-3:2005
(EtherCAT)
• Immunity to interference as per EN 61000-6-2:2005
(evaluation criterion A)
3) All connected circuits must be isolated from the mains supply by “electrical separation” in accordance with EN 61558-1
and EN 61558-2-6. Voltages must be limited to the safety extra-low voltage range in accordance with EN 60204-1.
We recommend the use of SELV/PELV power packs.
4) Frequency from 50 Hz to 10 kHz
5) Measured at ambient temperature 25 °C (77 °F) and supply voltage 24 V
1
8
11
10
9
7
5
6
4
3
2
3
4
1
1
(1.9)
47
(0.37)
9.5
(0.21)
5.4
(0.43)
11
(0.49)
12.4
(10.0)
256
(1.9)
49
(2.1)
53.1
(3.2)
79.9
(4.2)
106.9
(4.9)
126
(1.0)
25
(0.12)
3
(0.10)
(4x)2.5
(0.23)
5.8
(0.21)
5.2
Mating connector Removal space
20
(0.79)
104
(4.09)
99
(3.90)
[70]
[(2.76)]
11+PE
[6+PE]
ø
ø
øø
ø
Installation drawing
1 Venting screw
Note: See section “Installation Drawing Electronic Housing” for valves with fieldbus interface.
9Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 03 - D638 SERVO VALVESIZE 03 - D638 SERVO VALVE
Step Response Frequency Response
5/10/20/40 l/min
100
75
0 5 10 15 20
50
25
0
Stroke [%]
Time [ms]
5/10/20/40 l/min
101 100 300
0
-30
-60
-90
-120
-150
-12
-9
-6
-3
0
3
±5%
±10%
±25%
±90%
Amplitude ratio [db]
Phase lag [degree]
Frequency [Hz]
10Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 03 - D638 SERVO VALVESIZE 03 - D638 SERVO VALVE
Pressure Signal
Pressure signal characteristics
p
A
p
N
[%]
20
40
60
80
100
0
0 20 40 60 80 100
Command signal [%]
Flow Signal
Flow signal characteristic - in main line
A B
P T
A B
P T
Q
Q
N
[%]
20
0
40
60
80
100
-100
-100 -20-60 20 60 100
-80
-60
-40
-20
Command signal [%]
Flow signal characteristic - in bypass line
Q
Q
N
[%]
20
0
40
60
80
100
-100
-100 -20-60 20 60 100
-80
-60
-40
-20
A B
P T
Command signal [%]
Note: Measured with system pressure p
p
of 140 bar (2,000 psi), oil viscosity 32 mm
2
/s and oil temperature of 40°C (104°F).
11Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 03 - D638 SERVO VALVESIZE 03 - D638 SERVO VALVE
Typical Characteristic Curves
Flow signal curves at Δp
N
= 35 bar (500 psi) per spool land
Hydraulic Symbol
2x2-way valve in bypass line
BA
TPY
1
3-way valve in main line
TPY
1
BA
4-way valve in main line
TPY
1 Venting screw
0
0 20 40 60 80 100
R02
R04
R08
R16
Q [l/min (gpm)]
Signal [%]
20 (5.3)
10 (2.7)
30 (8)
40 (10.6)
Hole Pattern of Mounting Surface
The mounting surface must conform to
ISO 4401-03-03-0-05. Observe mounting length of
minimum 77 mm (3.0 in) and O-ring recesses for Y.
For maximum flow the ports for P, T, A and B must be
designed with Ø 7.5 mm (0.3 in), not according to the
standard.
Evenness of connecting surface has to be 0.01 mm
(0.0004 in) over 100 mm (3.94 in), average surface finish
R
a
better than 0.8 µm (0.0000314 in).
Designation P A B T Y F
1
F
2
F
3
F
4
G
Size Ø mm
in
7.5
0.30
7.5
0.30
7.5
0.30
7.5
0.30
3.3
0.13
M5
M5
M5
M5
M5
M5
M5
M5
4.0
0.16
Position X mm
in
21.5
0.846
12.7
0.5
30.2
1.189
21.5
0.846
40.5
1.594
0
0
40.5
1.594
40.5
1.594
0
0
33
1.299
Position Y mm
in
25.9
1.02
15.5
0.61
15.5
0.61
5.1
0.201
9
0.354
0
0
-0.75
-0.03
31.75
1.25
31
1.22
31.75
1.25
x
y
17
(0.7)
77
(3.0)
0
9,5
(0.4)
52
(2.0)
0
17
(0.7)
77
(3.0)
0
9.5
(0.4)
52
(2.0)
0
F
1
F
2
F
3
F
4
A
B
T
Y
G
P
12Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 05 - D639 SERVO VALVESIZE 05 - D639 SERVO VALVE
General Technical Data
Valve design 1-stage, with spool and bushing
Mounting pattern ISO 4401-05-05-0-05
(with or without leakage oil connection Y)
Installation position
In all orientations, venting screw has to be on top during venting
Weight 7.9 kg (17.4 lb)
Storage temperature range -40 to +80 °C (-40 to +176 °F)
Ambient temperature range -20 to +60 °C (-4 to +140 °F)
Vibration resistance 30 g, 3 axis, 10 Hz to 2 kHz
Shock resistance 50 g, 6 directions
MTTF
d
value according to EN ISO 13849-1 150 years
Hydraulic Data
Maximum operating pressure
Port P, A, B 350 bar (5,000 psi)
Port T without Y 50 bar (725 psi)
Port T with Y 210 bar (3,000 psi)
Port Y Depressurized to tank
1)
Rated flow at Δp
N
35 bar (500 psi)/spool land 60 l/min (15.9 gpm) 100 l/min (26.4 gpm)
Maximum flow 180 l/min (47.6 gpm)
Leakage flow (rate) (≈ zero lap)
2)
1.2 l/min (0.32 gpm) 2.0 l/min (0.53 gpm)
Hydraulic fluid Hydraulic oil as per DIN 51524 parts 1 to 3 and ISO 11158.
Other fluids upon request.
Temperature range -20 to +80 °C (-4 to +176 °F)
Viscosity range
Recommended viscosity range at 38 °C (100 °F) 15 to 100 mm
2
/s (cSt)
Maximum permissible viscosity range at 38 °C (100 °F) 5 to 400 mm
2
/s (cSt)
Recommended cleanliness class as per ISO 4406
For functional safety 18/15/12
For longer service life 17/14/11
Typical Static and Dynamic Data
2)
Step response time for 0 to 100 % stroke 13 ms 16 ms
Threshold, typical (for Q control) < 0.05 %
Threshold, maximum (for Q control) < 0.1 %
Hysteresis, typical (for Q control) < 0.05 %
Hysteresis, maximum (for Q control) < 0.1 %
Null shift at ΔT = 55 K (131 °F) (for Q control) < 1.5 %
Sample deviation of rated flow < 3 %
1) In order to avoid an emptying of the return line, a back-pressure of 2 bar (29 psi) should be maintained on the T, T1 and Y
connections.
2) Measured at 140 bar (2,000 psi) pilot or system pressure, oil viscosity 32 mm
2
/s and oil temperature 40 °C (104 °F)
13Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 05 - D639 SERVO VALVESIZE 05 - D639 SERVO VALVE
Electrical Data
Duty cycle 100 %
Degree of protection according to EN 60529 IP65 with mounted mating plugs
Supply voltage
3)
18 to 32 V
DC
Permissible ripple of supply voltage
4)
±3 V
RMS
Maximum current consumption
5)
3.0 A
Power consumption of the motor in middle position 9.6 W (0.4 A at 24 V
DC
)
Power consumption maximum 55.2 W (2.3 A at 24 V
DC
)
Fuse protection, external, per valve 3.15 A (slow)
EM compatibility • Emitted interference as per EN 61000-6-4:2005
(CAN open and PROFIBUS-DP)
• Emitted interference as per EN 61000-6-3:2005
(EtherCAT)
• Immunity to interference as per EN 61000-6-2:2005
(evaluation criterion A)
3) All connected circuits must be isolated from the mains supply by “electrical separation” in accordance with EN 61558-1
and EN 61558-2-6. Voltages must be limited to the safety extra-low voltage range in accordance with EN 60204-1.
We recommend the use of SELV/PELV power packs.
4) Frequency from 50 Hz to 10 kHz
5) Measured at ambient temperature 25 °C (77 °F) and supply voltage 24 V
1
8
11
10
9
7
5
6
4
3
2
3
4
1
1
(0.73)
18.6
(0.62)
15.6
(13)
312
(0.043)
1.1
(2.9)
73
(2.4)
60
(1.9)
48.2
(0.43)
11
(0.23)
5.8
(3.4)
87.3
(4.1)
105.2
(5.2)
132.2
(6.0)
151
(2.0)
50.3
(1.9)
47
(5x) (2x)
(0.26)
6.5
(0.43)
11
Mating connector Removal space
20
(0.79)
104
(4.09)
99
(3.90)
[70]
[(2.76)]
11+PE
[6+PE]
ø
ø
ø
ø
Installation drawing
1 Venting screw
Note: See section “Installation Drawing Electronic Housing” for valves with fieldbus interface.
14Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 05 - D639 SERVO VALVESIZE 05 - D639 SERVO VALVE
100 l/min
100
75
0 5 10 15 3020 25
50
25
0
Stroke [%]
Time [ms]
100 l/min
101 100 300
0
-30
-60
-90
-120
-150
-12
-9
-6
-3
0
3
±5%
±10%
±25%
±90%
Amplitude ratio [db]
Phase lag [degree]
Frequency [Hz]
Note: Measured with system pressure p
p
of 140 bar (2,000 psi), oil viscosity 32 mm
2
/s and oil temperature of 40°C (104°F).
Step Response Frequency Response
60 l/min
100
75
0 5 10 15 3020 25
50
25
0
Stroke [%]
Time [ms]
60 l/min
101 100 300
0
-30
-60
-90
-120
-150
-12
-9
-6
-3
0
3
±5%
±10%
±25%
±90%
Amplitude ratio [db]
Phase lag [degree]
Frequency [Hz]
15Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 05 - D639 SERVO VALVESIZE 05 - D639 SERVO VALVE
Pressure Signal
Pressure signal characteristics
p
A
p
N
[%]
20
40
60
80
100
0
0 20 40 60 80 100
Command signal [%]
Flow Signal
Flow signal characteristic - in main line
Q
Q
N
[%]
20
0
40
60
80
100
-100
-100 -20-60 20 60 100
-80
-60
-40
-20
A B
P TT1
A B
P TT1
Command signal [%]
Flow signal characteristic - in bypass line
Q
Q
N
[%]
20
0
40
60
80
100
-100
-100 -20-60 20 60 100
-80
-60
-40
-20
A B
P TT1
Command signal [%]
Note: Measured with system pressure p
p
of 140 bar (2,000 psi), oil viscosity 32 mm
2
/s and oil temperature of 40°C (104°F).
16Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
SIZE 05 - D639 SERVO VALVESIZE 05 - D639 SERVO VALVE
Typical Characteristic Curves
Flow signal curves at Δp
N
= 35 bar (500 psi) per spool land
Hydraulic Symbol
2x2-way valve in bypass line
BA
TPY T
1
1
3-way valve in main line
TPY T
1
1
BA
4-way valve in main line
Y TP T
1
A
1
B
1 Venting screw
0
0 20 40 60 80 100
R24
R40
Q [l/min (gpm)]
Signal [%]
20 (5.3)
40 (10.6)
60 (15.9)
80 (21.1)
100 (26.4)
Hole Pattern of Mounting Surface
The mounting pattern must confirm to
ISO 4401-05-05-0-05 with additional T
1
. Observe
mounting length of minimum 100 mm (3.94 in) and O-ring
recesses for X and Y. For 4-way valves with Q > 150 l/min
(39.6 gpm) the second tank port T
1
is required.
For maximum flow the ports for P, T, T
1,
A and B must be
designed with Ø 11.5 mm (0.45 in), not according to the
standard.
Evenness of connecting surface has to be 0.01 mm
(0.0004 in) over 100 mm (3.94 in), average surface finish
R
a
better than 0.8 µm (0.0000314 in).
Designation P A B T T
1
Y F
1
F
2
F
3
F
4
Size Ø mm
in
11.2
0.44
11.2
0.44
11.2
0.44
11.2
0.44
11.2
0.44
6.3
0.25
M6
M6
M6
M6
M6
M6
M6
M6
Position X mm
in
27
1.063
16.7
0.657
37.3
1.469
3.2
0.126
50.8
2
62
2.441
0
0
54
2.126
54
2.126
0
0
Position Y mm
in
6.3
0.248
21.4
0.843
21.4
0.843
32.5
1.28
32.5
1.28
11
0.433
0
0
0
0
46
1.811
46
1.811
YB
P
A
23
(0.9)
100
(3.9)
14.5
(0.6)
75
(3.0)
y
0
x
0
F
1
F
2
F
3
F
4
T
T
1
17Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Pin Assignment for Valves with 6-pole + PE Connector, Pin Contacts (X1)
- p Control
According to EN 175201-804, mating connector (type R or S, metal) with preleading protective earth pin ( )
Note: Connector only used for p control
B
C
D
F
E
A
Pin Pin assignment Signal type
1)
Voltage floating Current floating
2)
A Supply voltage 24 V
DC
(18 to 32 V
DC
) referenced to GND (reverse polarity protected against GND)
B GND Power ground/signal ground (enable and output)
C Enable input U
CB
> 8.5 to 32 V
DC
referenced to GND: Valve ready for operation (enabled)
U
CB
< 6.5 V
DC
referenced to GND: Valve disabled
The input resistance is 10 kΩ
D Command signal -
pressure control
3)
U
in
= U
DE
R
in
= 20 kΩ
I
in
= I
D
= -I
E
R
in
= 200 Ω
I
max
= ±25 mA
E
F Actual value -
pressure
I
out
: 4 to 20 mA referenced to GND (I
out
is proportional to pressure in port A; the output
is short-circuit -proof); R
L
= 0 to 500 Ω
Protective earth (PE) Connected with valve body
1) Signal ranges see next page.
2) Command signals I
in
< 3 mA (due to cable break, for example) indicates a failure of 4 to 20 mA signals. The valve reaction to this
failure may be customized and activated by the customer.
3) The potential difference between pins D or E referenced to pin B must be between -15 and +32 V.
18Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Ordering Codes and Signals for Valves with 6-pole + PE Connector (X1)
- p Control
Ordering code Command signal p 0 to 100 % pressure Actual value p 0 to 100 % pressure
M U
D
- U
E
0 to 10 V I
F
4 to 20 mA
X I
D
0 to 10 mA I
F
4 to 20 mA
E I
D
4 to 20 mA I
F
4 to 20 mA
Command Signal
Command signal current floating, ordering code X or E
R
e
0 V +24 V
D
E
B
A
I
E
U
DE
Valve
Control
I
Command signal
Supply
Command signal p I
D
Command signal voltage floating, ordering code M
GND
R
e
0 V +24 V
D
E
B
A
U
DE
Supply
Control
U
Command signal
Signal
Valve
Command signal p
Actual value
Actual value I
out
(pressure)
I
out
R
L
V
U
out
F
B
(GND)
Valve
Actual value I
out
= 4 to 20 mA
Actual value U
out
= 2 to 10 V with resistor
R
L
= 500 Ω (0.25 W) provided by customer
Note: For more information see Technical Notes TN 353 “Protective Grounding and Electrical Shielding of Valves” and TN 494 “Maximum
Permissible Length of Electric Cables for Valves with Integrated Electronics”. Visit www.moog.com/industrial/literature to download
document.
Note: See inside back cover for complete ordering information.
19Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Pin Assignment for Valves with 11-pole + PE Connector, Pin Contacts (X1)
- p and pQ Control
According to EN 175201-804, mating connector (type E, metal) with preleading protective earth pin ( )
Note: Connector used for p and pQ control
10
54
3
2
9 11
8
7
6
1
Pin Pin assignment Signal type
1)
Voltage floating Current floating
2)
1 Not used
2
3 Enable input U
3-10
> 8.5 to 32 V
DC
referenced to GND: Valve ready for operation (enabled)
U
3-10
< 6.5 V
DC
referenced to GND: Valve disabled
The input resistance is 10 kΩ
4 Command signal -
flow control
U
in
= U
4-5
R
in
= 20 kΩ
I
in
= I
4
= -I
5
(for I
7
= 0)
3)
R
in
= 200 Ω
5 Reference point
Input rated command
Reference for pin 4 and 7
4)
6 Actual value -
spool position
I
out
: 4 to 20 mA referenced to GND(I
out
is proportional to the spool position, 12 mA
corresponds to the valve middle position, the output is short-circuit-proof); R
L
= 0 to
500 Ω
7 Command signal -
pressure control
U
in
= U
7-5
R
in
= 20 kΩ
I
in
= I
7
= -I
5
(for I
4
= 0)
3)
R
in
= 200 Ω
8 Actual value -
pressure
I
out
: 4 to 20 mA referenced to GND (I
out
is proportional to pressure in port A; the output
is short-circuit -proof); R
L
= 0 to 500 Ω
9 Supply voltage 24 V
DC
(18 to 32 V
DC
) referenced to GND (reverse polarity protected against GND)
10 GND Power ground/signal ground (enable and output)
11 Digital output
monitoring
OFF: Indicates fault
5)
Nominal output voltage: 24 V
DC
,
load type: Ohmic, inductive, lamp load
Output current maximum 1.5 A (short-circuit-proof)
6)
Protective earth (PE) Connected with valve body
1) Signal ranges see next page.
2) Command signals I
in
< 3 mA (due to cable break, for example) indicates a failure of 4 to 20 mA signals. The valve reaction to this
failure may be customized and activated by the customer.
3) As pin 5 is the common feedback for pin 4 and pin 7, -I
5
= I
4
+ I
7
applies.
4) The potential difference between pins 4 or 5 or 7 referenced to pin 10 must be between -15 and +32 V.
5) Output can be programmed at the factory, “OFF” signal indicates fault (e.g. control error too high).
6) The currents drawn at the outputs pin 11 (referenced to GND) must be added to the valve supply current. The valve fuse must be
configured for the total current.
20Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Ordering Codes and Signals for Valves with 11-pole + PE Connector (X1)
- p and pQ Control
Ordering code Command signal Q ±100% spool position Actual value Q ±100 % spool position
M U
4
- U
5
-10 to +10 V I
6
4 to 20 mA
X I
4
-10 to +10 mA I
6
4 to 20 mA
E I
4
4 to 20 mA I
6
4 to 20 mA
Command Signals
Command signal current floating, ordering code X or E
0 V +24 V
4
10
9
R
in
Q
R
in
p
5
7
U
4-5
U
7-5
Valve
Control
Supply
Command signal Q I
4
Command signal p I
7
I
Command signal
Command signal voltage floating, ordering code M
R
in
Q
R
in
p
0 V +24 V
Supply
Control
Signal
GND
Valve
U
Q
Command signal
U
p
Command signal
Command signal Q
Command signal p
Actual Values
Actual value I
out
(pressure and spool position)
I
out
I
out
V
R
L
R
L
U
out
U
out
V
6
8
10
(GND)
Valve
Spool position
Pressure
Actual value I
out
= 4 to 20 mA
Actual value U
out
= 2 to 10 V with resistor
R
L
= 500 Ω (0.25 W) provided by customer
Note: For more information see TN 353 Protective Grounding and Electrical Shielding of Valves and TN 494 - Maximum Permissible
Length of Electric Cables for Valves with Integrated Eletronics. Visit www.moog.com/industrial/literature to download document.
Note: See inside back cover for complete ordering information.
Ordering code Command signal p 0 to 100 % pressure Actual value p 0 to 100 % pressure
M U
7
- U
5
0 to 10 V I
8
4 to 20 mA
X I
7
0 to 10 mA I
8
4 to 20 mA
E I
7
4 to 20 mA I
8
4 to 20 mA
21Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Installation Drawings for Valves with EtherCAT or
PROFIBUS-DP Fieldbus Connector
Ordering code
1)
E: EtherCAT
Ordering code D: PROFIBUS-DP
X1 Valve connector
X3 Fieldbus connector
X4 Fieldbus connector
X10 Service connector
(1.9)(3.4)
(0.75)
(1.6)
(4.9)
(4.2)
(5.8)
(4.9)
(3.1)
(4.2)
48.2
X4
X1
X10
87
19
40
124
105.5
147
124.2
79
106
X3
Mating
connector
Removal
space,
fieldbus
20
(0.79)
65
(2.6)
1) See inside back cover for complete ordering information.
Installation Drawings Electronic Housing
Installation Drawing for Valves with Analog
Activation
Ordering code
1)
O: Without fieldbus connector
X1 Valve connector
X10 Service connector
(1.9)(3.4)
(4.9)
(4.2)
(4.9)
(3.1)
(4.2)
48.2
X1
X10
87
124
105.5
124.2
79
106
Installation Drawing for Valves with CANopen
Fieldbus Connector
Ordering code
1)
C: CANopen
X1 Valve connector
X3 Fieldbus connector
X4 Fieldbus connector
(1.9)(3.4)
(0.75)
(1.6)
(4.9)
(5.8)
(4.9)
(4.2)
48.2
X4
X1
87
19
40
124
147
124.2
106
X3
Mating
connector
Removal
space,
fieldbus
20
(0.79)
65
(2.6)
22Rev.-, March 2014
TECHNICAL DATA Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
PROFIBUS-DP Connectors (X3, X4)
• Ordering Code
1)
D: PROFIBUS-DP
• Coding B
• Thread M12x1
• 5-pole
Pin Signal X3, X4 Description
1 Profi V+ Power supply 5 V of terminal
resistors
2 Profi A Receive/transmit data –
3 Profi GND Mass
4 Profi B Receive/transmit data +
5 Shield Shield
External thread, pin contact Internal thread, socket
contact
View on PROFIBUS-DP
connector X3
View on PROFIBUS-DP
connector X4
5
4
3
1
2
32
41
5
1) See inside back cover for complete ordering information.
Fieldbus Connectors
CANopen Connectors (X3, X4)
• Ordering Code
1)
C: CANopen
• Coding A
• Thread M12x1
• 5-pole
Pin Signal X3, X4 Description
1 CAN_SHLD Shield
2 CAN_V+ Not connected in the valve
3 CAN_GND Mass
4 CAN_H Transceiver H
5 CAN_L Transceiver L
External thread, pin contact Internal thread, socket
contact
View on CAN connector X3 View on CAN connector X4
5
4
3
1
2
32
41
5
EtherCAT IN/OUT Connectors (X3, X4)
• Ordering Code
1)
E: EtherCAT
• Coding D
• Thread M12x1
• 4-pole
Pin Signal X4 IN Signal X3 OUT Description
1 TX + IN TX + OUT Transmit
2 RX + IN RX + OUT Receive
3 TX – IN TX – OUT Transmit
4 RX – IN RX – OUT Receive
Internal thread, socket
contact
Internal thread, socket
contact
View on EtherCAT
connector X3
View on EtherCAT
connector X4
3
4
2
1
3
4
2
1
23Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
Modes
Pressure Control (p Control)
Ordering Code 16: B1
In this operating mode of the servo valve, the pressure in
port A is controlled either in the main line (ordering code
12: M) or bypass line (ordering code 12: B). The pressure
in port A is proportional to the pressure command
signal. The command signal (pressure command for port
A) is transmitted to the valve electronics. A pressure
transducer measures the pressure in port A and feeds
this to the valve electronics. The electronics compare the
actual pressure value and the pressure command signal
and then generate an internal signal to compensate the
deviation. The linear force motor brings the spool into the
corresponding position.
For this operating mode both a 6-pole + PE or a 11-pole + PE
valve connector can be used (ordering code 9: S or 9: E).
1
2
4
Actual value p
Command signal p
Pressure control
1 Maximum command signal p
2 Actual value p
4 Q limit value (100 %)
24Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
Modes
Flow Control with Pressure Limiting (pQ Control)
Ordering Code 16: C1
This is a combination of flow and pressure control for
which both command signals (flow and pressure) must be
present. Thus, a 11-pole + PE valve connector is required
(ordering code 9: E).
During the pQ function, the required spool position
calculated by the pressure controller is compared with the
external spool position command. The smaller of the two is
fed into the spool position control loop.
The result of this action is to give spool position control
until the actual pressure value starts to exceed the
pressure command signal, at which point pressure control
takes over.
The following are examples of possible combinations:
• Flow control with maximum pressure limiting control
• Flow control with minimum pressure limiting control
Flow Control with Maximum Pressure Limiting Control
Ordering Code 12: N or 12: C
When the actual pressure value reaches the pressure limit
(command signal), the pressure controller starts to limit
the spool command signal accordingly.
If the pressure limit value is exceeded, the pressure
control loop reduces or closes the P → A port and if
necessary opens the A → T port to maintain the pressure
at a level no higher than the pressure limit.
Flow Control with Minimum Pressure Limiting Control
Ordering Code 12: K
When the actual pressure value reaches the minimum limit,
the pressure controller starts to limit the spool command
signal accordingly.
If the pressure limit value is not reached (i.e. is below the
set limit), the pressure controller reduces or closes the
A → T port and opens the P → A port to maintain the
pressure at a level no lower than the pressure limit.
1
3
2
4
Actual value p
Comand signal Q
Actual value Q
Command signal p
1
2
4
3
Actual value p
Command signal Q
Actual value Q
Command signal p
Flow control with maximum pressure limiting control
1 Maximum command signal p
2 Actual value p
3 Limiting
4 Maximum command signal Q
Flow control with minimum pressure limiting control
1 Minimum command signal p
2 Actual value p
3 Limiting
4 Minimum command signal Q
25Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
From P→ A the valve operates like a 3-way pQ-valve.
From P → B it allowes only flow modulation.
This means the direction of the load motion can be
reversed (open loop velocity control for load retract).
4-way valve in main line
pP
A
Y TP
B
Optional Y external
Modes
The device operates as a 3-way pressure reducing or
limiting valve with flow from P → A or A → T.
Only one load port is used.
3-way valve in main line
Pp
A
Y TP
B
Optional Y external
26Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
DESCRIPTION OF OPERATIONDESCRIPTION OF OPERATION
Modes
The device has parallel flow paths and operates as an
electrically adjustable pressure relief valve from A → T
and P → B.
At zero command signal the valve is fully open, i.e. the
pressure in the load ports is zero apart from minor
pressure build up due to line leakage.
2x2-way valve in bypass line
A B
Y TP
Optionally Y external
27Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
FLOW CALCULATIONFLOW CALCULATION
When the valve is open, the prevailing flow is dependent
not only on the spool position, (i.e. the opening cross
section of the valve), but also on the pressure drop at the
individual lands. When the valve is deflected at 100 %, it
delivers the rated flow with the rated pressure drop.
The rated flow of a servo valve corresponds to a pressure
drop of 35 bar (500 psi) per land, equating to 70 bar (1,000
psi) for two lands. When a valve is opened at 100 %, the
flow can be calculated as a function of the actual pressure
drop with the aid of the formula below or taken from the
diagram.
Q = Q
N
.
p
p
N
Q [l/min (gpm)] actual flow
Q
N
[l/min (gpm)] rated flow
Δp [bar (psi)] actual pressure drop per spool land
Δp
N
[bar (psi)] rated pressure drop per spool land
Flow diagram
100
(1,450)
200
(2,900)
350
(5,000)
p [bar (ps)]
Q [l/min (gpm)]
150 (39.6)
200 (52.8)
100 (26.4)
60(15.9)
80 (21.1)
40 (10.6)
30 (7.9)
20 (5.3)
15 (4.0)
10 (2.6)
8 (2.1)
5 (1.3)
3 (0.8)
2 (0.5)
50
(725)
20
(290)
30
(435)
10
(145)
1
(15)
70
(1,000)
60 (15.9)
40 (10.6)
100 (26,4)
20 (5.3)
10 (2.7)
5 (1.3)
D638-
R02
D638-
R04
D638-
R08
D638-
R16
D639-
R24
D639-
R40
Q
max
= 180 l/min (47.6 gqm)
Q
max
= 75 l/min (19.8 gqm)
The actual flow in the valve ports must not exceed a mean
flow velocity of approximately 30 m/s (96.5 ft/s) due to
the risk of cavitation. When operating the valves close to
these application limits, it is necessary to drill the ports to
the maximum possible diameters (see specifications for
the respective valve).
For ISO 4401 size 05 mounting surfaces the second tank
port must additionally be connected starting from a flow Q
exceeding 150 l/min (39.6 gpm).
The ports inside the manifold should exceed the valve
ports by one or two sizes to achieve the maximum flow.
28Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ELECTRONICSELECTRONICS
Digital Valve Electronics
The valve electronics is based on microprocessor
hardware with corresponding A/D-D/A converters for
analog input and output signals. All functions of the valve
are integrated in the firmware. The digital electronics
offer the following advantages over conventional analog
electronics:
• Greater flexibility: Ability to change the valve
parameters easily using configuration software and
the possibility of linearizing flow curves
• Higher reliability due to integrated monitoring
functions
• Easier maintenance due to diagnostic capability and
recording the fault history
• Remote maintenance and setup
Using the optional fieldbus interface cuts down the
amount of wiring needed and eliminates the need for
control interfaces in the PLC.
In the basic version the valve has a standard connector,
and service connector and does not include the fieldbus
interface. In this case the valve is actuated via an analog
command signal.
The service connector offers the possibility to connect the
valve to a PC or Notebook via an USB-to-CAN adaptor (see
accessories). Its CANopen interface offers access to the
valve parameters, which can be changed and monitored, as
well as diagnosing valve performance and possible faults.
The flexibility of the integrated firmware enables the user
to optimize the valve characteristic on-site as required by
the application:
• Adapting the valve flow curve to the needs of the
controlled system
• Adjusting the maximum valve opening separately for
each direction of motion
• Defining fault reactions
The results obtained by the parameter changes can be
viewed and analyzed directly using the built-in data logger.
The parameters optimized during commissioning can be
saved and copied. When the valve is replaced or used for
series applications no tuning is required. The valves are
supplied with a predefined parameter set if required.
Optional Fieldbus Interface
When the valves are operated with a fieldbus, they are
parameterized, activated and monitored via the fieldbus.
CANopen, PROFIBUS-DP or EtherCAT interfaces are
available. Other fieldbus communication protocols are
available upon request. The fieldbus interface is equipped
with two bus connectors (IN/OUT) for cost-effective
wiring. Valves can be integrated directly into the bus
without any external T-joints. The electrically isolated
fieldbus interface ensures reliable data transfer. Data
from additional analog inputs or from SSI and encoders
can be transmitted via fieldbus (inputs available upon
request).
29Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
FIELDBUS INTERFACEFIELDBUS INTERFACE
Modern automation technology is characterized by an
increasing decentralization of processing functions via
serial data communication systems. The use of serial bus
systems in place of analog signal transfer guarantees
greater system flexibility with regard to alterations and
expansions.
There is also considerable potential for saving project
planning and installation costs in many areas of industrial
automation. Further possibilities of parameterization,
better diagnostics and a reduction of the number of
variants are advantages which have only been made
possible by the use of field buses.
VDMA Profile
In a working group within the VDMA (German Machinery
and Plant Manufacturers‘ Association), a profile was
created in collaboration with numerous well-known
hydraulic system manufacturers. This profile describes
the communication between hydraulic components via a
fieldbus and defines uniform functions and parameters.
In this way, a standardized exchange format covering all
manufacturers was created.
DCVs and ACVs can be equipped with the following
fieldbus interfaces: CANopen, PROFIBUS-DP or EtherCat.
CANopen
According to EN 50325-4 CAN bus was originally
developed for use in automobiles, but has also been used
for years a variety of industrial applications. The CAN
bus is primarily designed for transmission reliability and
speed.
The CAN bus has the following general features:
• Multi-master system: Each node can transmit and
receive
• Topology: Line structure with short stub cables
• Network expansion and transmission rates:
- Up to 25 m (80.4 ft) at 1 Mbit/s
- Up to 5,000 m (16,090 ft) at 25 kbit/s
• Addressing type: Message-orientated via identifiers.
Priority assignment of messages possible via
identifiers
• Safety: Hamming distance=6, i.e. up to 6 individual
errors per message are detected.
• Bus physics: ISO 11898
• Maximum number of nodes: 110 (64 without repeaters)
PROFIBUS-DP
According to EN 61158, PROFIBUS-DP was developed
for process and manufacturing industries. It is thereby
supported by numerous control system manufacturers.
PROFIBUS-DP has the following features:
• Multi-master system: The masters share access time
and initiate communication. The slaves react only upon
request
• Topology: Line structure with short stub cables
• Network expansion and transmission rates:
- Up to 100 m (321.8 ft) at 12 Mbit/s
- Up to 1,200 m (3,861.6 ft) at 9,6 kbit/s per segment
• Use of repeaters possible
• Addressing type: Address-orientated. Priority/cycle
time assignment of messages via master configuration
• Bus physics: EIA-485
• Maximum number of nodes: 126 (32 without repeaters)
EtherCAT
According to IEC/PAS, 62407 EtherCAT was developed
based on the Ethernet as an industry bus based on
Ethernet to meet the increasing demands for faster
cycle times. The EtherCAT bus is designed for high data
transmission rates and fast cycle times.
The EtherCAT bus has the following features:
• Single-master system: The master initiates
communication. The slaves react only upon request
• Topology: Line, star, tree and ring structure based on
the daisy chain principle
• Network expansion and transmission rates: 100 m
(321.8 ft) between two nodes at 100 Mbit/s
• Addressing type: Address-orientated, one telegram for
all nodes
• Bus physics: Fast Ethernet 100 Base Tx
• Maximum number of nodes: 65,535
30Rev.-, March 2014
BACKGROUND Moog Direct Drive Digital Control Servo Valves with p and pQ Control
CONFIGURATION SOFTWARECONFIGURATION SOFTWARE
The Windows-based “Moog Valve and Pump Configuration
Software” enables fast and convenient commissioning,
diagnostics and configuration of the valve. It is possible
to transfer data from the PC to the valve or to process
the valve‘s current settings on the PC. The valve can
be controlled by means of graphical control elements.
Status information, command signals, actual values and
characteristic curves are represented in graphical form.
System parameters can be recorded and visualized via an
integrated data logger.
System Requirements
The configuration software can be installed on a computer
with the following minimum requirements:
• IBM PC-compatible
• Windows XP/7/8
• 1 GB RAM
• 1 GB free hard disk space
• Monitor resolution 1,024 x 768 pixels
• Keyboard, mouse
Recommended Requirements
• IBM PC-compatible
• Windows 7
Equipment
The following equipment is also required to be able to use
the software (see also list of accessories):
• USB port
• USB to CAN adapter
• Configuration/commissioning cable
• Adapter for service connector (not required for
CANopen fieldbus)
• Valve electrically connected and power supply
switched on
Note
Configuration or commissioning with the “Moog Valve and
Pump Configuration Software” can be performed via:
• Fieldbus connectors on valves with CANopen fieldbus
• Integrated service connector on valves with
PROFIBUS-DP or EtherCAT fieldbus or on valves with
analog activation
Download
The software is available free of charge from Moog upon
request. Please visit www.moog.com/industrial/downloads
to download the software.
31Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Series-specific Accessories and Spare Parts
Spare Parts Direct Drive DCV with p and pQ Control - Size 03 - D638 Servo Valve
Part name Description Material Part number
O-ring for ports P, T, A, B 4 pieces,
inner Ø 9.25 mm (0.36 in) x Ø 1.8 mm (0.07 in)
FKM 90 Shore CB35150-013
HNBR 90 Shore B97009-013
O-ring for port Y 1 piece, ID 7.65 x Ø1.8 (ID 0.3 x Ø0.07) FKM 90 Shore CB35150-012
HNBR 90 Shore B97009-012
Service sealing for
venting screw
1 piece FKM 90 Shore B97018-060-002
HNBR 90 Shore B97018-060-003
Service sealing set O-rings for ports P, T, A, B, Y FKM 90 Shore B97215-V630F63
HNBR 90 Shore B97215-H630F63
Accessories Direct Drive DCV with p and pQ Control - Size 03 - D638 Servo Valve
Part name Description Remark Part number
Flushing plate P, A, B, T, X, Y
A P B YTX
B46634-002
Mounting screws 4 pieces M5x55, ISO 4762-10.9,
tightening torque 6.8 Nm (60 Ibf in)
A03665-050-055
Shipping plate 1 piece B46035-001
Documents Direct Drive DCV with p and pQ Control - Size 03 - D638 Servo Valve
Part name Description Remark Part number
ATEX and IECEx manuals
D636 and D638 Series
Servo Valves
Manuals Visit www.moog.com/industrial/literature to
download a document using the part number in
a search
CDS29587
Manual D636 and D638
Series Servo Valves
B95872
32Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Series-specific Accessories and Spare Parts
Spare Parts Direct Drive DCV with p and pQ Control - Size 05 - D639 Servo Valve
Part name Description Material Part number
O-ring for ports P, T, T
1
, A, B 5 pieces, inner Ø 12.4 mm (0.49 in)
x Ø 1.8 mm (0.07 in)
FKM 90 Shore CB35150-004
HNBR 90 Shore B97009-004
O-ring for ports X, Y 2 pieces, inner Ø 15,6 mm (0.6 in)
x Ø 1,8 mm (0.07 in)
FKM 90 Shore CB35150-011
HNBR 90 Shore B97009-011
Service sealing set Contains the following O-rings:
• 5 pieces for P, T, T
1
, A, B
inner Ø 12.4 (0.49) x Ø 1.8 mm (0.07 in)
• 2 pieces for X, Y
inner Ø 15.6 (0.61) x Ø 1.8 mm (0.07 in)
• 1 piece for filter
inner Ø 12.0 (0.47) x Ø 2.0 mm (0.08 in)
• 1 piece for filter cover
inner Ø 17.1 (0.67) x Ø 2.6 mm (0.10 in)
FKM 90 Shore B97215-V681-10
HNBR 90 Shore B97215-H681-10
Accessories Direct Drive DCV with p and pQ Control - Size 05 - D639 Servo Valve
Part name Description Remark Part number
Flushing plate P, A, B, T, T
1
, X, Y
A P YTX
T
2
B
B67728-001
P, T, T
1
, X, Y
A P YTX
T
2
B
B67728-002
P, T, T
1
and X, Y
A P YTX
T
2
B
B67728-003
Mounting screws 4 pieces M6x60, ISO 4762-10.9, tightening
torque 11 Nm (97 lbf in)
A03665-060-060
Shipping plate 1 piece A40503
Documents Direct Drive DCV with p and pQ Control - Size 05 - D639 Servo Valve
Part name Description Remark Part number
ATEX and IECEx manuals
D637 and D639 Series
Servo Valves
Manuals Visit www.moog.com/industrial/literature to
download a document using the part number in
a search
CDS29577
Manual D637 and D639
Series Servo Valves
CA61892
33Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Series-independent Accessories
Accessories Direct Drive DCV with p and pQ Control - D638 and D639
Part name Description Remark Part number
Dust protection
cap for fieldbus
connectors X3, X4
For external thread M12x1,
metal
Required for operation without mating
connector (IP protection)
C55823-001
For internal thread M12x1,
metal
CA24141-001
Dust protection cap
for service connector
X10
For internal thread M8x1,
plastics
CA23105-080-010
Mains power
connection
Power supply cable, length
2 m (6.4 ft)
B95924-002
SELV power pack 24 V
DC
, 10 A D137-003-001
Mating connector Cable with straight mating
connector 11-pole + PE
5, 10, 20 or 25 m, e.g. for 5 m specify
005, other length upon request
C21031-xxx-001
Cable with straight mating
connector 6-pole + PE
C21033-xxx-001
Mating connector, elbow
6-pole + PE
In accordance with EN 175201-804,
type S, metal, IP65, cable Ø 8 to 12 mm
(0.31 to 0.47 in)
B97069-061
Mating connector, straight
11-pole + PE
In accordance with EN 175201-804,
type R, metal, IP65, cable Ø 11 to 13 mm
(0.433 to 0.512 in)
B97067-111
Mating connector, straight
6-pole + PE
In accordance with EN 175201-804,
type R, metal, IP65, crimp contact Ø
0.75 to 1.5 mm
2
(0.0012 to 0.0023 in
2
),
conus Ø 12.2 mm (0.48 in), cable Ø 9 to
12 mm (0.35 to 0.47 in), sealing element
Ø 9 to 13 mm (0.35 to 0.51 in)
B97007-061
Service and
commissioning set
Adapter for service
connector X10, M8x1 to
M12x1
CA40934-001
Configuration/commissioning
cable 2 m (6.4 ft), M12x1 to
EIA-232
TD3999-137
USB to CAN adapter (IXXAT) C43094-001
Moog Valve and Pump
Configuration Software
Download software free of charge at
www.moogsoftwaredownload.com
34Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Documents Direct Drive DCV with p and pQ Control - D638 and D639
Part name Description Remark Part number
Installation Instruction
D636, D637, D638 and
D639 Series Servo Valves
Installation Instructions Visit www.moog.com/industrial/literature
to download a document using the part
number in a search
B97072-636
Manual DCV Electrical
Interfaces
Manuals CA63420
Manual DCV with
CANopen Interface
CDS33853
Manual DCV with
EtherCAT Interface
CDS33722
Manual DCV with
PROFIBUS Interface
CDS33854
Technical Note TN 353 Protective Grounding
and Electrical Shielding
of Hydraulic Valves with
Integrated Electronics
CA58437
Technical Note TN 494 Maximum Permissible
Length of Electric Cables
for Valves with Integrated
Eletronics
CA48851
Series-independent Accessories
35Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Accessories - Installation Drawings
Mating Connector, Straight 6-pole + PE
In accordance with EN 175201-804, type R, metal, IP65,
crimp contact Ø 0.75 to 1.5 mm
2
(0.0012 to 0.0023 in
2
),
conus Ø 12.2 mm (0.48 in), cable Ø 9 to 12 mm (0.35 to
0.47 in), sealing element Ø 9 to 13 mm (0.35 to 0.51 in)
Part number B97007-061
22, max. 20 Nm
(177 lbf in)
Ø 22
(0.86)
Ø 29
(1.13)
66
(2.60)
20
(0.79)
70
(2.76)
Mating Connector, Elbow 6-pole + PE
In accordance with EN 175201-804, type S, metal, IP65,
cable Ø 8 to 12 mm (0.31 to 0.47 in)
Part number B97069-061
64
(2.53)
Ø 22
(0.86)
10
(0.39)
62
(2.45)
67
(2.64)
Ø 28.8
(1.13)
22, max. 20 Nm
(177 lbf in)
20
(0.79)
36Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ACCESSORIES AND SPARE PARTSACCESSORIES AND SPARE PARTS
Accessories - Installation Drawings
Mating Connector, Straight 11-pole + PE
In accordance with EN 175201-804, type R, metal, IP65,
cable Ø 11 to 13 mm (0.433 to 0.512 in)
Part number B97067-111
Ø 24
(0.94)
20
24, max. 20 Nm
(177 lbf in)
92
(3.62)
Ø 28
(1.10)
20
(0.79)
104
(4.09)
37Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
MOOG GLOBAL SUPPORTMOOG GLOBAL SUPPORT
Moog Global Support is our promise to offer world-class
Repair and Maintenance Services delivered expertly by our
trained technicians. With the reliability only available from
a leading manufacturer with facilities around the world,
Moog offers you service and expertise you can count on to
keep your equipment operating as it should.
This promise offers many benefits to our customers
including:
• Reduce your downtime by keeping critical machines
running in peak performance
• Protect your investment by ensuring reliability,
versatility and long-life of products
• Better plan your maintenance activities and make
systematic upgrades
• Leverage our flexible programs to meet the unique
service requirements of your facility
Look to Moog for global support including:
• Repair services using OEM parts are performed by
trained technicians to the latest specifications
• Stock management of spare parts and products to
prevent unplanned downtime
• Flexible programs, tailored to your needs such as
upgrades, preventative maintenance and annual/multi-
year contracts
• On-site services bring the expertise to you, providing
quicker commissioning, set-up and diagnostics
• Access to reliable services that are guaranteed to
offer consistent quality anywhere in the world
For more information on Moog Global Support visit
www.moog.com/industrial/service.
38Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ORDERING CODEORDERING CODE
R
02
04
10
W
O
A
8
H
V
-
7
0
6
F
D
5
1
R …
2 3 4 5 6 7 8
3
5
08
20
16
40
V
U
K
1
4
3
1
2
25
100
160
350
D
B
H
T
250
X
24
40
2
2
2
4
8
16
24
40
M
Model designation
Variant
Valve type
Servovalve with integrated digital electronics
–
Specification status
Series specification
Z
Special specification
D638: Rated flow per spool land [l/min (gpm)]
Pressure range [bar (psi)]
Maximum operating pressure
1)
Bushing/spool design
4-way: 1.5 to 3 % positive overlap, linear flow characteristic
4-way: 10 % positive overlap, linear flow characteristic
Special spool upon request
4-way: zero lap, linear flow characteristic
(363)
(1,450)
(2,320)
(5,076)
(3,625)
Seal material
Y port
Standard
Linear force motor
Spool position without electrical supply
Series
P
B, A T connected (approximately 10 % open)
P
A, B T connected (approximately 10 % open)
For = 35 bar (500 psi) p For = 5 bar (75 psi) p
Model number (assigned at the factory) Type designation
(2.7)
(1.3)
(5.3)
(10.6)
(1.0)
(0.5)
(2.1)
(4.2)
N N
For = 35 bar (500 psi) p For = 5 bar (75 psi) p
N N
3-way: P A, A T, 1.5 to 3 % positive overlap, linear flow characteristic
Center position
Closed with screw plug p
Tmax
= 50 bar (725 psi)
100 (26.4)
(6.3)
(10.6)
60 (15.9)
D639: Rated flow per spool land [l/min (gpm)]
D638
Standard
D639
4-way: P A and P B 20 % positive overlap, A T and B T 15 % negative overlap, linear flow characteristic
D638 or D639
HNBR
FKM
Open with filter element p
T
>50 bar (725 psi), p
T max
see maximum operating pressure in ordering code position 3
1) Set pressure can vary from the maximum operating pressure
39Rev.-, March 2014
ORDERING INFORMATION Moog Direct Drive Digital Control Servo Valves with p and pQ Control
ORDERING CODEORDERING CODE
10
M
X
E
9
14
C
D
E
O
11
2
… 2
10 11 12 13 14 15 16
9
13
A B K L M R
X – X – X –
– X – X – X
– – X X – –
– – – – X X
12
M
B
15
O1
K1
16
B1
C1
Y
9
S
E
N
C
K
Fieldbus connector X3, X4
Service connector X10
CANopen
PROFIBUS-DP
7)
EtherCAT
7)
Without fieldbus connector
7)
Enable function
If the enable signal is low:
The spool moves to a closed loop controlled neutral position (the HOLD position).
Supply voltage
24 V
DC
, for more information, see section “Electronics“
Input Q Input p
Command signals for flow Q and pressure p
Actual valve: Spool position or pressure 4 to 20 mA
Valve function
Without
9)
With
8)
Device capability
p control
pQ control
± 10 V
± 10 mA
0 to 10 V
0 to 10 mA
4 to 20 mA
Fieldbus
4)
4 to 20 mA
Fieldbus
4)
Further upon request
6-pole + PE EN 175201 part 804
3)
11-pole + PE EN 175201 part 805
2)
Valve connector X1
Pressure control in main line
6)
Pressure control in bypass line
6)
Flow control in main line with maximum pressure limiting control
5)
Flow control in bypass line with maximum pressure limiting control
5)
Flow control in main line with minimum pressure limiting control
5)
Monitoring of the safe position of the spool at pin 11
5)
. The range of the safe position
can be freely defined (the default range is around the spring centered position).
HIGH: Within the safe position range
LOW: Outside of the safe position range
Monitoring of the spool control error at pin 11
5)
. The threshold for the spool
control error can be freely defined (the default value is >30 % of maximum
spool stroke after 500 ms).
HIGH: Control error is below the threshold
LOW: Control error is above the threshold
If the enable signal is low: The linear force motor is de-energized.
The spool moves to its spring centered position
(as defined at position 6 of the order code).
2) For pQ control or p control with monitoring at pin 11
3) For p control
4) Only in conjunction with fieldbus connector “C, D, E”
(changeover to analog signals “M, X, E” possible)
5) Only in combination with valve connector X1 “E” and device
capability “C1”
6) Only in combination with valve connector X1 “S” and device
capability “B1”
7) Valve parameterization with commissioning software “Moog Valve
and Pump Configuration Software” using M8 service connector
8) Only in conjunction with fieldbus connector “D, E, O”
9) Only in conjunction with fieldbus connector “C”
WHAT MOVES YOUR WORLD
TAKE A CLOSER LOOK.
Moog designs a range of motion control products that complement the performance of those featured in this document.
Visit our website for more information and contact the Moog facility nearest you.
Argentina
+54 11 4326 5916
info.argentina@moog.com
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+61 3 9561 6044
info.australia@moog.com
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+55 11 3572 0400
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+1 716 652 2000
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+86 21 2893 1600
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+358 10 422 1840
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+33 1 4560 7000
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+49 7031 622 0
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India
+91 80 4057 6666
info.india@moog.com
Ireland
+353 21 451 9000
info.ireland@moog.com
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+39 0332 421 111
info.italy@moog.com
Japan
+81 46 355 3767
info.japan@moog.com
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+82 31 764 6711
info.korea@moog.com
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+352 40 46 401
info.luxembourg@moog.com
The Netherlands
+31 252 462 000
info.thenetherlands@moog.com
Norway
+47 6494 1948
info.norway@moog.com
Russia
+7 8 31 713 1811
info.russia@moog.com
Singapore
+65 677 36238
info.singapore@moog.com
South Africa
+27 12 653 6768
info.southafrica@moog.com
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+34 902 133 240
info.spain@moog.com
Sweden
+46 31 680 060
info.sweden@moog.com
Switzerland
+41 71 394 5010
info.switzerland@moog.com
Turkey
+90 216 663 6020
info.turkey@moog.com
United Kingdom
+44 (0) 1684 858000
info.uk@moog.com
USA
+1 716 652 2000
info.usa@moog.com
www.moog.com/industrial
Moog is a registered trademark of Moog Inc. and its subsidiaries.
All trademarks as indicated herein are the property of Moog Inc. and its subsidiaries.
CANopen is a registered trademark of CAN in Automation (CiA)
EtherCAT is a registered trademark of Beckhoff Automation GmbH
PROFIBUS-DP is a registered trademark of PROFIBUS Nutzerorganisation e.V.
Windows und Vista are registered trademarks of Microsoft Corporation
©2014 Moog Inc. All rights reserved. All changes are reserved.
Direct Drive Digital Control Servo Valves with p and pQ Control
PIM/Rev.-, March 2014, Id. CDL39437-en