FS055
10
ELECTRICAL CHARACTERISTICS
Power supplies
Nominal : +24 V
DC
Rectified and filtered : VRMS = 20 ÷ 32 VMAX (ripple max 10 % VPP)
Max power consumption
R = 30 W REB, RES = 50 W
Max. solenoid current 2,6 A
Coil resistance R at 20°C
3 ÷ 3,3
Ω
Analog input signals
Voltage: range ±10 VDC (24 VMAX tollerant) Input impedance: Ri > 50 kΩ
Current: range ±20 mA Input impedance: Ri = 500 Ω
Monitor output
Voltage: maximum range 0 ÷ 10 V
DC
@ max 5 mA
Current: maximum range 0 ÷ 20 mA @ max 500 Ω load resistance
Enable input
Range: 0 ÷ 9 V
DC (OFF state), 15 ÷ 24 VDC (ON state), 9 ÷ 15 VDC (not accepted); Input impedance: Ri > 87 kΩ
Fault output
Output range : 0 ÷ 24 V
DC (ON state ≅ VL+ [logic power supply] ; OFF state ≅ 0 V) @ max 50 mA;
external negative voltage not allowed (e.g. due to inductive loads)
Pressure transducer (1) E-ATR-8/*/I Output signal: 4 ÷ 20 mA (see tech table GS465)
Alarms
Solenoid not connected/short circuit, cable break with current reference signal, over/under temperature,
current control monitoring, power supplies level, pressure transducer failure
Insulation class
H (180°) Due to the occuring surface temperatures of the solenoid coils,
the European standards ISO 13732-1 and EN982 must be taken into account
Protection degree to DIN EN60529
R = IP65; REB, RES = IP66 / IP67 with mating connectors
Duty factor Continuous rating (ED=100%)
Tropicalization Tropical coating on electronics PCB
Additional characteristics
Short circuit protection of solenoid’s current supply; current control by P.I.D. with rapid solenoid switching;
protection against reverse polarity of power supply
Communication interface
USB
Atos ASCII coding
CANopen
EN50325-4 + DS408
PROFIBUS DP
EN50170-2/IEC61158
EtherCAT
EC 61158
Communication physical layer
not insulated
USB 2.0 + USB OTG
optical insulated
CAN ISO11898
optical insulated
RS485
Fast Ethernet, insulated
100 Base TX
Recommended wiring cable
LiYCY shielded cables, see section
19
11
SEALS AND HYDRAULIC FLUIDS - for other fluids not included in below table, consult our technical office
Seals, recommended fluid temperature
NBR seals (standard) = -20°C ÷ +60°C (+80°C for R), with HFC hydraulic fluids = -20°C ÷ +50°C
FKM seals (/PE option) = -20°C ÷ +80°C
NBR low temp. seals (/BT option) = -40°C ÷ +60°C, with HFC hydraulic fluids = -40°C ÷ +50°C
Recommended viscosity
20 ÷ 100 mm
2
/s - max allowed range 15 ÷ 380 mm
2
/s
Hydraulic fluid
Suitable seals type
Classification
Ref. Standard
Mineral oils
NBR, FKM, NBR low temp.
HL, HLP, HLPD, HVLP, HVLPD
DIN 51524
Flame resistant without water
FKM
HFDU, HFDR
ISO 12922
Flame resistant with water
NBR, NBR low temp.
HFC
Max fluid
contamination level
see also filter section at
www.atos.com or KTF catalog
normal operation
longer life
ISO4406 class 18/16/13 NAS1638 class 7
ISO4406 class 16/14/11 NAS1638 class 5
(1) Average response time value; the pressure variation in consequence of a modification of the reference input signal to the valve is affected
by the stiffness of the hydraulic circuit: greater is the stiffness of the circuit, faster is the dynamic response, see section
6
Note: above performance data refer to valves coupled with Atos electronic drivers, see section
3
Valve model
AGRCZO-*-10 AGRCZO-*-20
Max regulated pressure [bar]
100; 210; 315; 350
Min regulated pressure [bar]
1; 3 (only for /350)
Max pressure at port A or B [bar]
350
Max pressure at port Y [bar]
pilot drain always external, to be directly connected to tank at zero pressure
Max flow [l/min]
160 300
Response time 0-100% step signal
[ms]
(depending on installation) (1)
≤ 45 ≤ 50
Hysteresis
≤ 0,5 [% of max pressure]
Linearity
≤ 1,0 [% of max pressure]
Repeatability
≤ 0,2 [% of max pressure]
Thermal drift
zero point displacement < 1% at ΔT = 40°C
9
HYDRAULIC CHARACTERISTICS - based on mineral oil ISO VG 46 at 50 °C
Note: a maximum time of 500 ms (depending on communication type) have be considered between the driver energizing with the 24 V
DC
power supply and when the valve is ready to operate. During this time the current to the valve coils is switched to zero.
(1) In case of pressure transducer failure, the valve's reaction can be configured through Atos E-SW software to:
- cut off the current to solenoid, therefore the regulated pressure will be reduced to minimum value (default setting)
- automatically switch the pressure control from closed loop (dynamic, balaced, smooth) to open loop, to let the valve to temporarily operate
with reduced regulation accuracy