Bulletin MSG30-3254-INST/UK
Installation and setup
manual
Electro-hydraulic control
for serie PVplus
Pump design series 44-45-46-47,
compensator design series 45
Eective: July 1st, 2021
Supersedes: March 1st, 2017
Visit our homepage
for additional support
parker.com/pmde
2
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Notes:
The compensator / control ordering codes shown represent the last three digits in the
pump ordering code (di-gits 13 to 15).
Setup manual for electro hydraulic proportional controls for axial piston pumps, PV family
Contents
1. Table of available electro hydraulical controls ...................................................................3
2. Proportional displacement control, code …FDV (old: FPV) ................................................3
3. Proportional displacement control with pressure compensation,
codes ...UDR, ...UDK (old: UPR, UPK) .............................................................................6
4. Proportional displacement control with closed loop pressure control,
code ...UDM (old: UPM) .................................................................................................8
5. Preload valve for proportional controlled pumps, code PVAPVV... ..................................... 10
Table 1: Main dimensions - preload manifold ................................................................. 11
6. External pilot pressure supply ....................................................................................... 12
7. Quick pressure relief with quick unload valve, code PVAPSE* in
combination with controls codes ...UDS resp. UDQ ........................................................ 13
8. Preload and quick unload manifold PVAPVE* in combination with compensator codes
...UDP resp. ...UDF ...................................................................................................... 14
Table 3: Main dimensions of the preload and quick unload manifold .................................15
9.1 Basic adjustment of CIP sensor ....................................................................................16
9.2 Basic adjustment LVDT ................................................................................................18
9.3 Basic adjustment control valves .................................................................................... 19
10. Connecting diagram for proportional displacement control; Code ...FDV. .........................20
11. Connecting diagram for p/Q-control; Codes ..UDR, ...UDK, ...UDM, ...UDS, ...UDQ, ...
UDP and ...UDF. ..................................................................................................................... 21
12. Cables and connections .................................................................................................22
13. Trouble shooting guide ...................................................................................................24
3
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
1. table of available electro hydraulical controls
FDV Function description
The proportional displacement control allows a
continuous variation of the pump displacement
according to an electrical input command. A
contactless inductiv position sensor (CIP-Sen-
sor) measures the position of the servo piston
and provides an information on the actual dis-
placement (signal, displacement) to the control
Electro hydraulical controls
Code Control designs
F D V
closed loop displacement control with PVCMD1FB*** valve, no pressure
compensation, standard design from 07.2015
U D
closed loop displacement control with PVCMD1FB*** valve, with pressure
compensation, standard design from 07.2015
Code option
R pilot operated pressure control, NG6 interface
K
as option R, additional proportional pressure valve PVACRE***K** mounted
M
as option K, additional pressure sensor PVACMS mounted for closed loop
pressure control
P pilot operated pressure control, NG6 interface, for pre load and quick unload manifold
F
as option P for pre load and quick unload manifold, additional PVACMS and
PVACRE***K** mounted for closed loop pressure control
S pilot operated pressure control, NG6 interface, for quick unload manifold
Q
as option S for quick unload manifold, additional PVACMS and PVACRE***K**
mounted for closed loop pressure control
pressure p
1
flow Q
displacement
Figure 1 pQ Diagram …FDV (old:FPV)
2. Proportional displacement control, code …FDV (old: FPV)
electronic. The servo piston is kept by the servo
spring and the pump outlet pressure on its an-
nulus area at maximum displacement. The larger
piston area is pressurized by the control valve.
Figure 2 shows the circuit diagram of a pump
with this control.
4
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
S T
M
P1
P
AP
T
AP
T
S
U
Solenoid current,
Displacement
control valve
Solenoid A
Solenoid B
Signal,
displacement
Displacement control valve
Code PVCMD1FBD**
p1
p
A
The control valve contains a control spool,
which is moved by two proportional solenoids.
The valves hydraulic neutral point is given by
the electronic control module. According to
the area ratio of the servo piston, the control
pressure p
A
is approximately 25 % of the pump
outlet pressure p1.
Solenoid A is driven by the electronic module for
a flow command of 100 %. The spool connects
thereby port A with the pump housing (Port T).
The oil out of the large piston area drains o,
the pump is swashing to maximum displace-
ment. Solenoid B is activated in case of 0 % flow
command. The pump outlet pressure p1 on the
large servo piston area downstrokes the pump
Figure 2: Circuit diagram...FDV control
FDV - Function
to minimum displacement. This requires a pump
outlet pressure p1 of at least 15 bar.
If this pressure cannot be maintained, special
arrangements for a proper displacement control
are required (please refer to chapter 4). Without
an appropriate load pressure the pump will stay
at full displacement.
The ordering code for a single control valve is:
PVCMD1FB*** the first * indicates the mounting
option ( with interface plate / elbow manifold ).
The two * at the end indicate seal option and
screws option (For details please see the com-
pensator spare parts list PVI-PVC).
5
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Circuit diagram
Figure 4: Circuit diagram for electronic module PQDXXA-Z10
diagnosis, displacement, 0...+10 V
ready, 24 V nominal
status I, 24 V nominal
diagnosis, pressure, 0...+10 V
10 V reference output
solenoid p-valve
(pressure pilot valve)
solenoid B Q-valve
(displacement control valve)
solenoid A Q-valve
(displacement control valve)
power supply
power supply
18...30 V
0
18...30 V
0
0 V
9
6
29
31
13
14
11
5
7
8
10
3
17
19
12
15
16
1
2
12 V
5 V
DC
DC
PWM
18
20
21
23
4
22
24
enable ramp, 24 V nominal
enable p/Q-control, 24 V nominal
enable power amplifier, 24 V nom.
connect to terminal 11, 0 V
displacement transducer
LVDT = 0...+10 V or CIP = 4...20 mA
pressure command, (p
cmd
) 0... +10 V
or 4...20 mA
horse power 0... +10 V
command (L
cmd
) 0
pressure transducer 0... +10 V
or 4...20 mA
displacement cmd. (Q
cmd
) 0... +10 V
or 4...20 mA
µC
4. Electronic module PQDXXA-Z10 –
Function
To control the proportional solenoid the elec-
tronic module PQDXXA-Z10 is offered. This
module is able to control all PV sizes and all
control option.
Figure 3 shows this module from the outside,
figure 4 the electronic control circuit.
For further information please see Bulletin
MSG30-3255-INST/UK
Figure 3: Electronic module PQDXXA-Z10
6
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
The compensator code ...UDR (PVCMD1FBU** +
open NG6 pattern), ...UDK (PVCMD1FBU** +
PVACRE***K**) include a pressure compensa-
tion, which can override the proportional dis-
placement control. This is achieved by combining
a second control valve (remote pressure compen-
sator) with the displacement control valve. Figure
5 show the hydraulic circuit of the UDK option.
3. Proportional displacement control with pressure compensation,
codes ...UDR, ...UDK (old: UPR, UPK)
S T
M
P1
P
p
A
AP
T
AP
T
S
U
P
T
M
WV
B
P
B
D2
AP
T
AP P
P
T
X
Q
X
p
I
P
I
Q:A
I
Q:B
W
Q
W
p
Displacement control
Code PVCMD1FBU**
Pressure compensator
Stage, Code PVCM*U2**
Proportional pressure pilot
valve, Code PVACRE***K**
(not included with code ...UDR)
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
I
Q:B
= solenoid current B, displacement control valve
I
P
= solenoid current, pressure pilot Valve
W
Q
= command, displacement
W
P
= command, pressure
Figure 5: Hydraulic Circuit of the …UDR, …UDK control
7
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
The position of the control spool of the pressure
compensator is controlled by the pressure drop
across the pilot orifice Bp and by the compen-
sator spring. The nominal control pressure
dierence is factory-set to a value of 15 ± 1 bar.
As long as the pressure setting of the pilot
valve (in figures 5: proportional pressure valve
PVACRE***K**) is not yet reached, the control
valve spring keeps the control spool in the posi-
tion shown. The control port of the displacement
control valve is connected to the large servo
piston area and controls the position of the
servo piston.
The displacement control operates as described
in chapter 2. The adjustment of the control
pressure is done between the control spool and
control orifice.
When the set pressure of the pilot valve is
reached, this valve opens and control flow from
the pump outlet is passing the pilot orifice Bp
and the pressure pilot valve before returning
to the pump drain line. That creates a pressure
drop across pilot orifice Bp. If this pressure drop
reaches the 15 bar setting of the compensator,
the control spool of the pressure stage is in its
control position.
That leads to a reduction of the pump displace-
ment in order to keep the pump outlet pressure
constant. As the displacement control wants
to keep the pump at the set displacement the
proportional solenoid is powered with nominal
current. That connects the control port of the
displacement control valve with the pump case
(port T).
The control spool of the pressure stage now
controls the servo piston position by using
the control orifice B
D2
for pressure dividing.
Pressure control is achieved as with a stand-
ard remote compensator. It is mandatory, that
the displacement setting of the displacement
control stage is high enough, to cover the flow
requirements of the system, the pump and the
control valves to maintain the desired pressure.
The following valve is to be used with this mod-
ule: PVACRE***K**. Other valve models can
lead to instability problems or malfunction of
the control.
This valve is designed for a nominal pressure
of 350 bar. By using the MAX adjustment at the
control module, the input commend range can
easily be adjusted to any smaller nominal system
pressure. In this way also for these lower pres-
sures full resolution of the input command can
be achieved.
For basic adjustment of the control valves and
the displacement transducer see chapter 9. For
electrical connection and cable requirements
see chapter 12.
Note: Parker has decided for this design with
a separate hydraulic-mechanically operated
remote pressure compensator, which overrides
the proportional displacement control for three
reasons:
1. Piston pumps of the PV series have a large
servo piston. That oers several advantages.
On the other hand the servo piston has a high
flow demand for compensation. A hydraulic
mechanical pressure compensator – as used
here – can provide much higher control flows,
than a proportional directional control valve
used by other pump models, where this valve
also provides pressure control basing of the
signal of a pressure transducer.
2. The hydraulic-mechanical control valve
„senses“ a pressure peak in the system, as
the pressure acts direct on the control spool.
Depending on the actual system pressure very
high forces are available to operate the spool.
Therefore this control rarely will tend to stick
or malfunction, as proportional directional
control valves may do under contaminated fluid
conditions.
3. The pressure control using a proportional
pressure control valve to pilot it, does not require
a pressure sensor at the pump outlet. Never-
theless a closed loop pressure control can be
oered if required (see next chapter).
Function description UDR / UDK (old: UPR / UPK)
8
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
With compensator ordering code ...UDM a pres-
sure sensor and a proportional pressure valve
is combined with the remote pressure control
stage. That realizes a closed loop pressure
control. It also oers the option of an electronic
horse power limitation. The hydraulic circuit
for these control option are shown in figure 6.
The pressure sensor included in the shipment
is of the Parker model PVACMS (SCP01-600-
24-06). Also included in the shipment is a pro-
portional pressure pilot valve of the ordering
code PVACRE***K**. The hydraulic function is
described in the recent chapter. There are no
dierences except the pressure sensor.
S T
M
P1
P
AP T
AP T
S
U
P
T
WV
B
P
B
D2
AP T
AP
P
T
P
X
Q
X
P
I
P
I
Q:A
I
Q:B
W
Q
W
P
Displacement control valve
Code PVCMD1FBU**
Pressure compensator,
Code PVCM*U2**
Proportional pressure valve,
Code PVACRE***K**
P
U
Pressure sensor
SCP01-600-24-06
PVACMS*
4. Proportional displacement control with closed loop pressure control,
code ...UDM (old: UPM)
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
I
Q:B
= solenoid current B, displacement control valve
X
P
= signal, pressure
I
P
= solenoid current, pressure pilot Valve
W
Q
= command, displacement
W
P
= command, pressure
Figure 6: Hydraulic Circuit of …UDM control
9
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
As shown in figure 6, the pressure sensor is
positioned in the pilot circuit. According to the
dierential pressure adjusted at the compensa-
tor valve, the system pressure is higher than the
controlled pressure.
This concept avoids stability problems with the
control loop and the necessity of an external
adjustment of the control loop. On the other
hand there are additional measures necessary
(e.g.: command signal correction), if linearity
between input (command signal) and output
(system pressure) is required.
Figure 7 shows the typical behaviour of pilot
pressure p
p
and system pressure p
1
as function
of the input signal.
The digital control module oers the required
signal correction to compensate for this eect.
The standard module parameter sets already
include this feature for the factory set pressure
dierentialof 15 bar.
For other dierential settings see module oper-
ating instructions.
Figure 7: Pressures vs input signal
p1 = pressure at pump outlet, system pressure
(=p
P
+ ∆p)
∆p = compensator differential
(factory setting 15 bar)
p
P
= pressure at pilot valve, closed loop con-
trolled pressure
command U
P
system press. p
1
, pilot press. p
P
10
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
As already mentioned in chapter 1, a propor-
tional controlled variable displacement pump
needs always a minimum outlet pressure of ap-
prox. 20bar, to down stroke the pump against
the servo spring force.
In some applications and especially at small
displacement settings that is not always given.
Two possibilities to solve this issue are de-
scribed in the following chapters:
If and external auxiliary pressure is available, this
can be used to control the pump at low outlet
pressure. This method is explained in chapter 6.
The other option is the use of a preload valve
(sequence valve).
Figure 8 is showing the hydraulic circuit of a
pump with ...UPR control, using a preload valve.
The preload valve is oered as a manifold, that
can directly be flanged to the pressure port of
the pump. The ordering code is PVAPVV*. The *
stands for the frame size of the pump, the screw
option and the seal material.
The preload valve is also available as slip in car-
tridge valve according to DIN 24 342.
Because of the pilot valve characteristic the
opening pressure p1 is approx. 20 bar. The port
Mp1 can be used to get under all working con-
ditions a pressure of 20 bar e.g. to pilot valves
with external pilot pressure supply. At approx.
25 bar system pressure the valve is fully open
(pressure drop < 1 bar).
S T
M
P1
AP
T
AP
T
S
U
M
WV
B
D2
A
P TAP
P
T
P
M
p1
p
P
p2
M
p1
X
Q
X
P
I
P
I
Q:A
I
Q:B
W
Q
W
P
preload valve,
Code PVAPVV*
B
P
P
T
T
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
I
Q:B
= solenoid current B, displacement control valve
X
P
= signal, pressure sensor
I
P
= solenoid current, pressure pilot Valve
W
Q
= command, displacement
W
P
= command, pressure
5. Preload valve for proportional controlled pumps, code PVAPVV...
Figure 8: Hydraulic circuit of a pump with ...UDK with preload valve control
11
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Figure 9 shows the preload manifold for direct
mounting to the pressure port of the pump. It
takes screws with the length L to mount it to the
pump. L includes the length screwed into the
pump end cover.
Gage port p1, G1/4“
(preloaded pressure,
covered)
flanged ports
ISO 6162: DN, PN;
fits to PV frame size
BG; threads: M
gage port p2, G1/4“
(system pressure, covered)
Drain port L,
G1/4“
Note: All auxiliary
manifolds can also be
supplied in USversion
(UNC threads and
UNF ports) and with
ports according to
ISO 6149
Input and output are designed as flange ports
according to ISO 6162 and fit direct to the ac-
cording PV frame size. Table 1 shows the main
dimensions.
Figure 9: Outside view of the preload
manifold for direct pump mounting. Outlet
optional to front (shaft side) or to the rear
Table 1: Main dimensions - preload manifold
dimension BG1 BG2 BG3 BG4 BG5 BG6*
H[mm] 100 100 110 110 120 120
B[mm] 90 90 100 100 125 125
T[mm] 80 80 92 92 105 105
L[mm] 102 102 122(119*) 122(119*) 136 136
T1[mm] 116 116 137 137 155 155
for size PV016 - 028 PV032 - 046 PV063 - 092 PV140 - 180 PV270 PV360
DN[mm] 19 (3/4”) 25 (1”) 32 (1 ¼”) 32 (1 ¼”) 38 (1 ½”) 38 (1 ½”)
PN[bar] 400 400 400 400 400 400
M M10 M12 M12 (M14*) M12 (M14*) M16 M16
valve insert DIN E16 DIN E16 DIN E25 DIN E25 DIN E32 DIN E32
Q
nominal
[l/min] 160 160 300 300 550 550
*1) optional for PV063 – PV180, thread option 4; 2) L = clamping length for screws M
*2) for BG6 PV 360 the preload manifold of BG5 is used
12
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
6. External pilot pressure supply
The alternative solution is, to supply the control
circuit from an external auxiliary pilot pressure
supply circuit. The servo system is discon-
nected from the pump outlet (plug inside of the
pump gage port). The pump outlet pressure is
connected via a check valve to the pilot pres-
sure port.
An external source for auxiliary power (capable
of a flow of 20 – 40 l/min (depending on pump
size) at a pressure of 20 – 30 bar) is also con-
nected via a check valve to the pilot port.
Figure 10 shows the hydraulic circuit for this
option.
As long as the pump outlet pressure is lower,
than the external supply pressure, the control
circuit is powered by the external source.
When the system pressure exceeds the auxiliary
pressure, the control is internally pressurized.
Please note:
- for pressures below the auxiliary pressure a
pressure control is not possible, because the
control senses the supply pressure.
- using this option the pump can be operated at
0 bar and dead head. Under these conditions
the pump does not provide drain flow and the
pump can overheat. Case flushing is necessary.
I
Q:A
I
P
X
P
X
Q
S
T
T
U
s
T
T
T
WV
M
p1
W
Q
W
P
A
A
A
M
M
B
D2
B
p
P
P
P
P
P
check valves
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
X
P
= signal, pressure sensor
I
P
= solenoid current, pressure pilot valve
W
Q
= command, displacement
W
P
= command, pressure
Figure 10: Hydraulic circuit of a pump with external pilot pressure supply
13
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
When working with proportional pressure con-
trolled pumps, the system pressure does not fol-
low immediately the input signal when switching
to a lower pressure setting.
Reason for this is, that a pump can supply flow
but cannot take flow to relieve a system. To de-
crease the pressure in a system, compression
volume has to be taken away in order to reduce
the pressure. A pump only can be down stroked
to deadhead and pressure can only decrease
due to leakage and pilot power requirements.
That can take up to several seconds.
A direct mounted unload valve, Code R5V* (com-
plete code, technical parameter and dimensions
on request) solves this issue.
Figure 11 is showing the hydraulic circuit of a
pump with p-Q control and the quick unload
valve.
A 2-way SAE port mounted valve is inserted into
the pilot line to the pressure compensator stage.
The pilot flow to the proportional pressure pilot
valve has to pass two orifices in the poppet and in
the cover of this valve. The poppet is kept closed
with a 9-bar-spring.
The pressure compensator stage has in this
case not the control spool with the internal pilot
orifice (B
p
), because pilot flow is now supplied
externally through the quick unload poppet.
The ordering code for this compensator is
PVCM*US**.
7. Quick pressure relief with quick unload valve, code R5V* in
combination with controls codes ...UDS resp. UDQ
A
A
AA
T
T
TT
P
U
s
P
P P
P
P
P
P
S
T
T
P
P
MP
P
M
P1
R5V*
Pressure compensator
PVCM*US**
Quick unload valve
code: R5V*
D
P2
D
P1
9 bar
P
P
WV
T
M
X
Q
X
P
I
P
I
Q:A
I
Q:B
W
Q
W
P
B
D2
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
I
Q:B
= solenoid current B, displacement control valve
X
P
= signal, pressure sensor
Figure 11: Hydraulic circuit of the ...UDS control with quick unload valve
I
P
= solenoid current, pressure pilot valve
W
Q
= command, displacement
W
P
= command, pressure
14
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
The pump accessory manifold code PVAPVE*
combines preload and quick unload function.
This manifold is flanged direct to the pressure
port of a PV pump. For functional description
see the last chapters.
To ensure a correct function under all working
conditions and to control immediately the load
pressure, the control pressure has to be taken
after the preload valve.
Sensing area of the control spool and spring
chamber are both to be connected by pipe or
8. Preload and quick unload manifold PVAPVE* in combination with compensator codes
...UDP resp. ...UDF
hose to the control ports of this manifold. The
hydraulic circuit diagram in figure 12 display this.
Both functions are built into one manifold. Figure
13 shows this manifold and table 3 lists the main
dimensions.
The dimension L indicates the total length of the
mounting bolts and includes the length screwed
into the pump end cover.
The hydraulic connections between manifold
and pump compensator (ps and pp) are not
included in the pump shipment.
S T
M
p1
P
AP
T
AP
T
S
U
M
WV
B
D2
A
P
T
AP
P
P
T
D
P2
p
P
Mp
p
4 bar
p
P
D
P1
P
T
p
S
p
2
M
p2
p
S
p
M
p
1
T
1.0
VE
X
Q
X
P
I
P
I
Q:A
I
Q:B
W
Q
W
P
pre-load and quick unload manifold,
code: PVAPVE*
X
Q
= signal, displacement
I
Q:A
= solenoid current A, displacement control valve
I
Q:B
= solenoid current B, displacement control valve
X
P
= signal, pressure sensor
I
P
= solenoid current, pressure pilot valve
W
Q
= command, displacement
W
P
= command, pressure
Figure 12: Hydraulic circuit of the ...UDP control with pre-load and quick unload manifold
15
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Max. pressure
pilot valve
Flange ports ISO6162; DN,
PN; fit to PV, frame size BG; thread M
Cover and insert
DIN E NG2 quick
unload valve
Return port TE,
thread G
Alternative
outlet port P
2
,
thread G
2
Also available in
US-version ( UNC
threads and UNF
ports) and with
ports according to
ISO 6149
Gage port MpS, system
pressure, G1/4“
Port p system
pressure, G1/4“
Port p
P
, pilot
pressure, G1/4“
Gage port MpP,
pilot pressure, G1/4“
Port p
1
,G1/4“,
preloaded
pressure (covered)
Figure 13 Preload and quick unload manifold
Table 3: Main dimensions of the preload and quick unload manifold
dimension BG1 BG2 BG3 BG4 BG5 BG6*
B[mm] 125 150 157 157 190 190
H[mm] 105 130 13 0 130 154 154
T[mm] 80 80 92 92 105 105
L[mm] 105 103 121 121 137,5 137,5
B1[mm] 189 189 196 196 239 239
H1[mm] 166 166 166 166 199 199
T1[mm] 116 116 137 137 155 155
for size PV016 - 028 PV032 - 046 PV063 - 092 PV140 - 180 PV270 PV360
DN[mm] 19 (3/4”) 25 (1”) 32 (1 ¼”) 32 (1 ¼”) 38 (1 ½”) 38 (1 ½”)
PN[bar] 400 400 400 400 400 400
M M10 M12 M12 (M14*) M12 (M14*) M16 M16
valve insertNG1 DIN E16 DIN E16 DIN E25 DIN E25 DIN E32 DIN E32
Qnominal[l/min] 160 160 300 300 550 550
valve insertNG2 DIN E16 DIN E16 DIN E16 DIN E16 DIN E25 DIN E25
Qnominal[l/min] 160 160 160 160 300 300
G (port TE) ½” ½” ½” ½” ¾” ¾”
G2 (opt. outlet) ¾” 1“ 1 ¼” 1 ¼” 1 ½” 1 ½”
*1) optional for PV063 – PV180, thread option 4
*2) for BG6 PV360 the manifold of BG5 is used
Preload valve,
insert DIN E NG1
16
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
9.1 Basic adjustment of CIP sensor
The contactless inductive position transducer
for displacement feedback (CIP) and the com-
pensator valves are factory preset and the set-
tings are secured. New or readjustment is only
necessary after repair or replacement.
At full stroke the adjustment of the sensor can
be verified: The current at the CIP output (pin
6 at the control module) should have a value
between 20…20,4 mA
Teach Process
1. Solenoid to be connected according to chap-
ter 9 and 10 to the electronic control module
2. To teach the sensor switch to controller
option TYPE = S in the ProPVplus software.
This means that the sensor signal is not
considered.
3. Connect teach adapter (RK-PV000CIP-
TEACH47) with CIP sensor.
4. At running pump, the nominal value for dis-
placement [WQ] is to be set to 0 %
5. Test rig must be set to a pressure = 25 bar.
All other connections / valves in the hydraulic
circuit have to be closed.
6. Push button on teach adapter for 3 sec-
onds → LED on sensor flashes one time per
second.
Replacement
Figure 14:
Hydraulic sheme
for pump in 0 %
displacement
LED for feedback/
diagnostics
Don’t touch! -
factory preset
(max. 10 Nm)
use 32 mm key
(max. 40 Nm)
Sensor
17
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
7. Push button on teach adapter for 1 second
→ 0 % displacement value is defined [4 mA],
LED on sensor flashes 4 times per second
Attention: After teaching 0 % displacement
value the sensor is given an undefined signal
between 4 and 20 mA.
8. Set the nominal value for the pump displace-
ment to 100 % so that the pump is in max
displacement. The displacement of the
pump can be checked with the help of a flow
measuring device. The maximum displace-
ment is reached, if the displacement / flow
does not further increase, even when the
input command is still raised.
Figure 15: Hydraulic sheme for pump in 100 % displacement
9. Push button on teach adapter for 1 second →
100 % displacement value is defined [20 mA],
LED on sensor emits a permanent light signal.
10. Disconnect teach-adapter and sensor and
reconnect sensor with electronic control
module.
Attention: The teach process needs to be fin-
ished within 2 minutes. Otherwise the sensor will
reset to the previous setting.
Note: If the teach button is pressed for 8 sec-
onds, all settings are deleted, and the sensor is
reset to the factory settings.
18
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
9.2 Basic adjustment LVDT
The inductive position transducer for displace-
ment feedback (LVDT) and the compensator
valves are factory preset and the settings are
secured. New or readjustment is only neces-
sary after repair.
LVDT for displacement feedback:
Prior to a basic setting the adjustment of the
armature length is to be checked / readjusted
(see figure 16). The exact dimension for this
setting is given in table 4:
Size Size Serie 45
1 PV016-028 73.5
2 PV032-046 73.5
3 PV063-092 75.0
4 PV140-180 75.0
5 PV270 75.0
6 PV360 75.0
Table 4: setting dimensions LVDT core
Figure 16: Setting dimension A for LVDT armature
The adjustment is secured by a removable glue.
A new setting again has to be secured to avoid
uncontrolled re-setting.
At full upstroked pump the mechanical adjust-
ment can be verified: The voltage at the LVDT
output (pin 25 at the control module) should
have a value as given in the table below (± 0,2 V).
Zero adjustment:
Next the zero adjustment of the LVDT is to be
checked. The LVDT and the solenoid of the
displacement control valve are to be connected
according to chapter 9 to the electronic control
module.
Size voltage size voltage
PV016 6.34 V PV063 7.12 V
PV020 6.06 V PV080 6.48 V
PV023 5.87 V PV092 6.10 V
PV028 5.50 V PV140 5.24 V
PV032 6.40 V PV180 3.83 V
PV040 5.70 V PV270 4.06 V
PV046 5.43 V PV360 4.06 V
Protection plug
with o-seal
Zero adjustment
(sealed)
Do not touch!
electrical
connection
Figure 17: Iinductive positon transducer (LVDT),
outside view
At running pump the command for the displace-
ment is to be set to 0 and the pressure relief valve
of the circuit / test rig has to be set to a pressure
> 25 bar. All other connections / valves in the
hydraulic circuit are to be closed.
The pump then will down stroke to deadhead
at the minimum pump compensating pressure
(10 ± 2 bar). By setting the zero adjustment
potentiometer (see figure 17) at the LVDT the
diagnosis output of the control module is to
be set to 0 V, as the actual displacement is the
minimum displacement that can be controlled.
After adjustment the potentiometer must be
sealed again.
MAX-adjustment:
Next the command for the displacement is to
be increased, until the maximum displace-
ment of the pump is reached. That can either
be monitored by using the diagnosis output or
a flow meter at the pump outlet. The maximum
displacement is reached, if the displacement /
flow does not further increase, even when the
input command is still raised.
19
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
If the actual value gets 10V before the pump is full
stroked, the LVDT parameter need to be reset.
If the actual value is below 10V and the pump is
already full stroked, the LVDT parameter need
to be reset as well.
9.3 Basic adjustment control valves
See also Installation and Start-Up Manual
for the digital control module PQDXXA-Z10.
Caution: the proportional displacement con-
trol, code ...FDV (old: FPV) does not include
a pressure compensation. Therefore the
hydraulic circuit needs to be protected with
a pressure relief valve (safety valve). This
valve has to be layed out for full pump flow.
The remote pressure compensation stage of
the p-Q-controls codes ...UDR, ...UDK, ...UDM,
...UDS, ...UDP und ...UDF (old: ...UPR, ...UPK,
...UPM, ...UPS, ... UPQ, ...UPP and UPF), refered
chapters 2 to 7, is adjusted as follows.
Dierential pressure adjustment
Lock nut
The factory setting for the dierential pressure
is 15 ± 1 bar. For re-adjustment two pressure
gages / transducers are required. The dier-
ential pressure to be adjusted is the dierence
between the two pressures on both sides of
the control spool of the pressure compensator
stage in a control situation. For compensator
codes ...UDP and UDF (old: UPP and UPF) this
is the dierence between the pressure p
F
on
the sensing side and the pilot pressure p
R
(see
figure 12).
For all other codes it is the dierence between
pump outlet pressure p
1
and pilot pressure p
R
.
The leads to a minimum compensation pres-
sure of 15 bar at completely unloaded spring
chamber.
Figure 18: Proportional p-Q-control
20
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
10. Connecting diagram for proportional displacement control; Code ...FDV.
Base parameter sets for FDV are available with module firmware PQDXXA-Z10-r03
and higher. (cable details see chapter 12)
S T
M
P1
P
AP
T
AP
T
S
U
Cable 1
CIP/
LVDT
Cable 3a
Solenoid A
Cable 3b
Solenoid B
displacement control valve,
Code PVCMD1FBD**
enable ramp, 24 V nominal
connect to terminal 11, 0 V
displacement cmd, (Q
cmd
) 0...+10 V
or 4...20 mA
0 V
displacement transducer
LVDT = 0...+10 V or CIP = 4...20 mA
18...30 V
0
18...30 V
0
9
6
29
31
13
14
11
5
7
8
10
3
17
19
12
15
16
1
2
18
20
21
4
22
24
23
12 V
5 V
DC
DC
PWM
µC
enable power amplier, 24 V nom.
power supply
power supply
solenoid B Q-valve
(displacement control valve)
solenoid A Q-valve
(displacement control valve)
diagnosis, displacement, 0...+10 V
ready, 24 V nominal
status I, 24 V nominal
10 V reference output
ow Q
ow
pressure p
21
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
S T
M
P1
P
AP
T
AP
T
S
U
P
T
P
U
M
WV
B
P
B
D2
AP TAP PT
P
Cable 1
CIP /
LVDT
Cable 3a
Q-valve
solenoid A
Cable 3b
Q-valve
solenoid B
Displacement control
stage
Code PVCMD1FBU**
Cable 4
p-valve
Cable 2
pressure sensor
Pressure compensator
stage, code PVCM*U2**
(with quick unload
manifold: code PVCM*US**,
with preload and quick
unload manifold: code
PVCM*UP**
Pressure sensor
PVACMS, SCP01-600-24-06
(for closed loop
pressure control and
horse power)
Proportional pressure pilotvalve
code PVACRE***K**
18...30 V
0
18...30 V
0
0 V
9
6
29
31
13
14
11
5
7
8
10
3
17
19
12
15
16
1
2
12 V
5 V
DC
DC
PWM
18
20
21
23
4
22
24
µC
connect to terminal 11, 0 V
displacement transducer
LVDT = 0...+10 V or CIP = 4...20 mA
pressure command, (p
cmd
) 0... +10 V
or 4...20 mA
horse power 0... +10 V
command (
L
cmd
) 0
pressure transducer 0... +10 V
or 4...20 mA
displacement cmd. (
Q
cmd
) 0... +10 V
or 4...20 mA
enable ramp, 24 V nominal
enable p/Q-control, 24 V nominal
enable power amplifier, 24 V nom.
diagnosis, displacement, 0...+10 V
ready, 24 V nominal
status I, 24 V nominal
diagnosis, pressure, 0...+10 V
10 V reference output
solenoid p-valve
(pressure pilot valve)
solenoid B Q-valve
(displacement control valve)
solenoid A Q-valve
(displacement control valve)
power supply
power supply
11. Connecting diagram for p/Q-control; Codes ..UDR, ...UDK, ...UDM, ...UDS, ...UDQ,
... UDP and ...UDF.
Base parameter sets for UD* are available with module firmware PQDXXA-Z10-r03
and higher. (cable details see chapter 12)
Q
U
Q
U
P
p
22
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
12. Cables and connections
Cable 1 from CIP and LVDT (displacement transducer)
Cable 2 from pressure sensor (compensator codes ...UPM, …UPF, ...UPQ)
cable:3 x 0,5 mm², shielded, max. 50 m long
connector: according DIN 43 650, version AF, 4-pin
protection class IP 65 for voltages up to 250
V
Alternative: shielded cable with molded
connector; in dierent length and variations.
cable: 4 x 0,5 mm², shielded, max. 50 m long
connector: CIP: round type M12 x 1; 4-pin
LVDT: round type M12 x 1; 5-pin
angled version
protection class IP 65 for
voltages up to 250 V
CIP
p/Q-module, control
Pin 6
+24 V
Teach-in
Pin 9
cable 3 a/b: 3 x 0,5 mm², shielded, max. 50 m long
connector: according DIN 43 650, version AF, 4-PIN
protection class IP 65 for voltages up to 250V
cable: 4 x 0,5 mm², shielded, max. 50 m long
connector: CIP: round type M12 x 1; 4-pin
LVDT: round type M12 x 1; 5-pin
angled version
protection class IP 65 for voltages uop to 250 V
Notice: To protect the sensor, a cable strain
relief should be provided on the system side.
23
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Cable 4 to proportional pressure pilot valve solenoid (not for compensator code ...FDV,
...UDR, ...UDP, ...UDS [old: ...FPV, ...UPR, ...UPP, ...UPS])
cable:3 x 1,5 mm², max. 50 m long
connector: according DIN 43 650, version AF, 3-pin
protection class IP 65 for voltages up to 250
PIN 20 solenoid A / PIN 23 solenoid B
PIN 18 solenoid A / PIN 21 solenoid B
cable 3 a/b: 3 x 1,5 mm², max. 50 m long
connector: according DIN 43 650, version AF, 3-PIN
protection class IP 65 for voltages up to 250V
Cable 3 a/b to displacement control valve (displacement control)
cable: 3 x 1,5 mm², max. 50 m long
connector: according DIN 43 650, version AF, 3-PIN
protection class IP 65 for voltages up to 250V
24
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
13 Trouble shooting guide
Pump delivers no output flow
Drive motor does not turn
reason
solution
Motor is not connected correctly or one of the three phases has failed.
Motor does not turn smoothly when pump is disconnected from pump.
Check motor connections, check electrical power supply.
reason
solution
Pump is mechanically blocked. Motor turns smoothly when disconnected from
pump.
Send pump for service to factory.
Drive motor only turns at slow speed
reason
solution
Motor is not selected properly. Installed motor has not enough torque.
Start pump at unloaded system. Use motor with more horse power.
reason
solution
Pump is hydraulically blocked. No function of compensator, no pressure relief
valve; Pump stops after e few turns.
Check function of pump compensator (see below). Start pump at unloaded
system.
Drive motor turns, pump does not turn
reason
solution
Coupling is not or not correctly mounted.
Check coupling assembly and correct it.
Drive motor turns and pump turns
reason
solution
Wrong direction of rotation.
Change direction of motor rotation.
reason
solution
Fluid reservoir empty or not filled to level, suction line ends above fluid level.
Fille reservoir to required level, if necessary increase suction pipe length.
reason
solution
Suction line is blocked. E. g. by plugs, cleaning tissues, plastic-plugs.
Ball valve in the suction line closed. Suction filter blocked.
Check suction line for free flow. Open valves in suction line.
Valves should be equipped with electrical indicator. Check suction filter.
reason
solution
Suction line not gas tight, pump gets air into suction port.
Seal suction line against air ingression.
reason
solution
Pressure line / system is not able to bleed air out.
Unload pressure port, unload system before start, bleed air from pressure line.
Pump does not build up pressure, but delivers full flow at low pressure
reason
solution
Standard pressure compensator is set to minimum pressure.
Adjust compensator setting to desired pressure.
reason
solution
No pressure pilot valve connected.
Install suitable pressure pilot valve and adjust it to the desired setting.
reason
solution
Multiple pressure pilot selector valve is not energized; Pump works in stand-by.
Energize selector valve solenoid.
reason
solution
Dierential pressure at compensator is adjusted properly (too low).
Check differential pressure adjustment and correct it as described above.
25
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Trouble shooting guide
Pump does not build up pressure, but delivers full flow at low pressure
reason
solution
Horse power compensator setting changed.
Check setting of horse power compensator and correct it, if required.
reason
solution
Proportional displacement control is not connected as required.
Check wiring; connect according to installation manual for electronic module.
reason
solution
Displacement transducer (LVDT) adjustement changed.
Correct zero setting at displacement transducer.
reason
solution
Electronic module has no supply power.
Make sure module is powered with 22 - 36 V DC.
reason
solution
Cylinder block lifts from valve plate due to excessive wear.
Send pump to factory for service.
Pump does not compensate
reason
solution
No pressure pilot valve connected to compensator or valve is blocked.
Connect pressure pilot valve to compensator, make sure valve opens as required.
reason
solution
No or too low pressure at pump outlet port.
Pump outlet pressure must be at least 15 bar, because otherwise the bias spring
in the pump cannot be compressed.
Pump does not upstroke, sticks at zero displacement.
reason
solution
Compensator is blocked due to contamination.
Clean hydraulic fluid, clean compensator valve.
reason
solution
Cable to LVDT or proportional solenoid is interrupted
Check wiring and make sure cable is ok. Replace if necessary.
Compensator is unstable
reason
solution
Compenstor spool is sticking due to contamination of hydraulic fluid.
Clean hydraulic system, clean compensator valve.
reason
solution
Compensator dierential pressure changed (too low or too high)
Adjust compensator differential pressure to required setting.
reason
solution
Wrong pilot orifice or pressure pilot valve improperly selected.
Select pilot orifice and pressure pilot valve as recommended.
reason
solution
Dynamic critical system, e. g.: pressure compensator combined with pressure
reducing valve, load sensing (flow) compensator combined with flow control valve.
use remote pressure compensator instead of standard pressure compensator.
26
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Notes
27
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
Notes
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED
HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY
DAMAGE.
This document and other information from Parker-Hannifin Corporation, its subsidiaries and
authorized distributors provide product or system options for further investigation by users having
technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection of
the system and components and assuring that all performance, endurance, maintenance, safety
and warning requirements of the application are met. The user must analyze all aspects of the
application, follow applicable industry standards, and follow the information concerning the product
in the current product catalogue and in any other materials provided from Parker or its subsidiaries
or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors provide component or
system options based upon data or specifications provided by the user, the user is responsible for
determining that such data and specifications are suitable and sucient for all applications and
reasonably foreseeable uses of the components or systems.
Offer of Sale
Please contact your Parker representation for a detailed ”Oer of Sale”.
WARNING – USER RESPONSIBILITY
Position notification regarding Machinery Directive 2006/42/EC:
Products made by the Pump & Motor Division Europe (PMDE) of Parker Hannifin are
excluded from the scope of the machinery directive following the “Cetop” Position Paper
on the implementation of the Machinery Directive 2006/42/EC in the Fluid Power Industry.
All PMDE products are designed and manufactured considering the basic as well as the
proven safety principles according to:
• ISO 13849-1:2015
• SS-EN ISO 4413:2010
so that the machines in which the products are incorporated meet the essential health and
safety requirements.
Confirmations for components to be proven component, e. g. for validation of hydraulic
systems, can only be provided after an analysis of the specific application, as the fact to
be a proven component mainly depends on the specific application.
Dr. Hans Haas
General Manger
Pump & Motor Division Europe
Parker Hannifin Manufacturing Germany GmbH & Co KG
Pump & Motor Division Europe
Neefestraße 96
09116 Chemnitz, Germany
Tel: +49 (0)371 - 3937 - 0 MSG30-3254-INST/UK
Fax: +49 (0)371 - 3937 - 488
Email: pmde-pqd-support@parker.com © Copyright 2021
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