Danfoss 51 Series Service Manual

Proportional controls
Proportional control
P001826
Proportional controls allow the motor to operate in an infinitely variable displacement position based on
a hydraulic or electrical input signal.
Proportional controls are available on Series 51 motors. Series 51-1 motors are two-position only.
Proportional controls are also available with a PCOR feature.
The PCOR feature allows normal proportional control while causing the motor to increase displacement
when system pressure reaches a set level due to load. The pressure compensator portion of the control
overrides any position less than maximum as commanded by the control input signal.
PCOR controls are available with BPD to prevent the pressure compensator from operating during
dynamic braking. Supplements to this manual detail functional description, maintenance, and repair
procedures for proportional controls. Supplements include:
•
11009446 Series 51 Single Input Hydraulic Proportional Controls
Types: HZ, HA, HB, HE, HS, H1/H2, J1, J3, J4, K1/K2
•
11009447 Series 51 Dual Input Hydraulic Proportional Controls
Types: HP, HC, JA
•
11009448 Series 51 Electrohydraulic Proportional Controls
Types: EP, EQ, ER, ES, L1-L2, L7, A7, D7, D8
Service Manual
Series 51 and 51-1 Motors
Operation
20 |
©
Danfoss | March 2016 11008567 | AX00000013en-US0202

Danfoss 51 Series Specifications

General

Brand	Danfoss
Model	51 Series
Category	Engine
Language	English