Control Response; Response Time, Fdc 115/130 - Danfoss H1 Series Technical Information

Technical Information
H1P 115/130 Axial Piston Single Pumps
Control Options
34 | © Danfoss | May 2018
Description
IP Rating IEC 60 529
DIN 40 050, part 9
Connector color
*
PWM signal required for optimum control performance.
Pump output flow direction vs. control signal
Shaft rotation
Control Logic 12 V
24 V
Port A
Port B
Servo port pressurized
W
Warning
Loss of input signal to the 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 swash-
plate response to the application requirements. 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.
H1 pumps are limited in mechanical orifice combinations. Mechanical servo orifices are to be used only
for fail-safe return to neutral in a case of an electrical failure.
A swash-plate response times table is available for each frame size. Testing should be conducted to verify
the proper orifice selection for the desired response. Typical response times at the following conditions:
∆p = 250 bar [3626 psi]
Charge pressure = 20 bar [290 psi]
Viscosity and temperature = 30 mm²/s [141 SUS] and 50 °C [122 °F]
-1
Speed = 1800 min (rpm)

Response Time, FDC 115/130

Stroking direction
Full flow to neutral
Full forward flow to full reverse flow
12 V
IP 67
IP 69K with mating connector
Black
CW
0-780 mA 1100 mA 1300-1800 mA
0-400 mA 550 mA 680-920 mA
in no flow out
out no flow in
M5 n/a M4
0.8 mm [0.03 in] orifice
s
s
24 V
CCW
0-780 mA 1100 mA 1300-1800 mA
0-400 mA 550 mA 680-920 mA
out no flow in
in no flow out
M5 n/a M4
BC00000198en-US0901