Solenoid data (continued)
Description 12 V 24 V
PWM
Range
70-200 Hz
Frequency (preferred)
*
100 Hz
IP Rating
IEC 60 529
IP 67
DIN 40 050, part 9
IP 69K with mating connector
*
PWM signal required for optimum control performance.
Pump output flow direction vs. control signal
Shaft rotation CW CCW
Control Logic 12 V
0-780 mA 1100 mA 1300-1800 mA 0-780 mA 1100 mA 1300-1800 mA
24 V
0-400 mA 550 mA 680-920 mA 0-400 mA 550 mA 680-920 mA
Port A
in no flow out out no flow in
Port B
out no flow in in no flow out
Servo port pressurized
M5 n/a M4 M5 n/a M4
Warning
Loss of input signal to this control will cause the pump to produce maximum flow.
Control response
H1 controls are available with optional control passage orifices to assist in matching the rate of
swashplate response to the application requirements (e.g. in the event of electrical failure). The time
required for the pump output flow to change from zero to full flow (acceleration) or full flow to zero
(deceleration) is a net function of spool porting, orifices, and charge pressure. A swashplate response
table is available for each frame indicating available swashplate response times. Testing should be
conducted to verify the proper orifice selection for the desired response.
H1 pumps are limited in mechanical orificing combinations. Mechanical servo orifices are to be used only
for fail-safe return to neutral in the event of an electrical failure.
Typical response times shown below at the following conditions:
∆p
250 bar [3626 psi]
Viscosity and temperature
30 mm²/s [141 SUS] and 50 °C [122 °F]
Charge pressure
20 bar [290 psi]
Speed
1800 min
-1
(rpm)
Response time, FDC 069/078
Stroking direction 0.8 mm [0.03 in] Orifice
Full flow to neutral 2.9 s
Full forward flow to full reverse flow 4.3 s
Technical Information H1 Axial Piston Single Pumps, Size 069/078
Control options
32 11062169 • Rev 0700 • November 2015
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