OilGear XD5-100-A1, Service Manual

Page: 14 / 31

Pump Service Manual
XD5-100-A1
Phone: (402) 727-9700
Website: www.Oilgear.com
905 S. Downing Street, Fremont, NE 68025
Page 14 of 31
Issue Date: 1/4/2021
910003
6.1.4 Remote Pressure Compensator and Load Sense, P-1NN/F
This control option functions the same as the Pressure Comp. with Load Sense option discussed in Section 6.1.2 , except
that the compensator signal is supplied by a remote system component, supplied by the system designer.
6.1.4.1 Function
A load sense control maintains a constant set pressure differential
between the pump outlet and a point downstream of a restrictor or
flow control valve in the system. Flow is proportional to restrictor
area size and pressure differential. Load sense control will adjust
pump stroke to maintain a constant pressure differential and flow
with changes in system pressure and pump speed.
Opening or closing flow control valve (changing restrictor area size)
will change stroke of pump to maintain pressure differential. Flow
will be proportional to restrictor area size.
The system designer provides the following for a remote
compensator with load sense circuit:
•
A flow restriction between the outlet of the pump and the
implements, like an orifice or a flow control valve.
•
A pressure signal from the circuit, downstream of the restriction
and plumbed into the LS/RP Port shown in
Figure 8 .
•
A remote pressure compensator valve with a flowrate of
approximately 0.25 GPM.
Additionally, 3 values are chosen and adjusted in the Control and circuit:
P
remote comp
Remote Compensator Pressure, set in the remote compensator valve
P
comp
Compensator Pressure, set in the Pres. Comp. Adjuster
P
ls
Load Sense Pressure, set in the Load Sense Adjuster
6.1.4.2 How to Adjust
P
remote comp
is adjusted using the instructions for the remote compensator valve, chosen by the system designer.
P
comp
is adjusted using the PC Adjuster, mounted on the Control Block as shown in Figure 5 .
Adjuster: 3/16 in. Internal Hex
Range: 500 – 5,000 psi [13.8 to 345 bar]
Rate: 485 psi [33.4 bar] per turn
P
ls
is adjusted using the LS Adjuster, mounted on the Control Block. The LS Adjuster appears in Figure 7 .
Adjuster: 3/16 in. Internal Hex
Range: 200 – 500 psi [13.8 to 34.5 bar]
Rate: 56 psi [3.9 bar] per turn
6.1.4.3 Response Time
The control ’s response time will be determined by the remote compensator/load sense circuit supplied by the system
designer.
Figure 11 - Remote Compensator with Load Sense Response