Brake Pressure Defeat (Bpd); Electric Bpd; Electric Solenoid Connector; Hydraulic Bpd - Danfoss H1 Series Technical Information

Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Control operation and description

Brake Pressure Defeat (BPD)

40 | © Danfoss | December 2016
For propel applications, use the electric or hydraulic BPD option in conjunction with the PCOR option.

Electric BPD

For propel applications, use the electric BPD option in conjunction with the PCOR option. The BPD shuttle
valve is located ahead of the pressure compensator control valve.
The BPD defeat consists of an electric off/on-solenoid and a two-position, three-way porting spool.
The applied logic allows the pressure compensator control to operate normally with high loop system
pressure during acceleration and cuts off the supply pressure during deceleration if the motor is running
in pump mode. This prevents rapid or uncontrolled deceleration while the machine is slowing down.
With the BPD solenoid de-energized, the porting spool is centered by spring force.
The BPD solenoid must be controlled by a direction lever switch or an output signal from a micro-
controller.

Electric solenoid connector

1 2
P003 480
Connector ordering data
Description
Mating connector
Wedge lock
Socket contact (16 and 18 AWG)
Danfoss mating connector kit

Hydraulic BPD

The BPD shuttle valve is located ahead of the pressure compensator control valve. The BPD function
consists of an external pressure supply which acts on a two-position, three-way porting spool. The
applied logic allows the pressure compensator control to operate normally with high loop system
pressure during acceleration and cuts off the supply pressure during deceleration if the motor is running
in pump mode. This prevents rapid or uncontrolled deceleration while the machine is slowing down.
When pilot pressure difference on the control pressure ports of the BPD is too low the position of the
porting spool is not defined.
Quantity Ordering number
1 DT06-2S
1 W2S
2 0462-201-16141
1 K29657
11037153 | BC00000043en-US1103