Options D1Ma, D2Ma - Electric Proportional Control With Pcor - Danfoss H1 Series Technical Information

Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Controls – nomenclature, description
Options D1MA, D2MA – electric proportional control with PCOR
44 | © Danfoss | December 2016
D1 – electric proportional 12 V / de-energized = max. displacement
MA – with Pressure Compensator Over Ride / without Brake Pressure Defeat
D2 – electric proportional 24 V / de-energized = max. displacement
MA – with Pressure Compensator Over Ride / without Brake Pressure Defeat
C
Caution
This control is not for use in propel applications.
Hydraulic schematic
MA L2
A
B
MB
Where:
A, B Main pressure lines
L1, L2
Drain lines
M4, M5 Gauge port servo pressure
MA, MB
Gauge port system pressure
N Speed sensor (optional)
Displacement (%) versus Input Command (mA)
100%
80%
60%
D2
40%
20%
0%
0 200 400 600 800
D1, D2 = D1, D2 Control
Z = Start setting range
Grey area = Intended to be used for zero degree capability.
Below are formulas to calculate start and end input command dependent on displacements:
N
n
max min
C 1
L1
P301 324
M4 M5
D1
1000 1200 1400 1600 1800
mA
P301 328
Options D1MA, D2MA
Solenoid C1
De-energized = max. displacement
Full-energized = min. displacement
PCOR
32°
6°
160 bar 300 bar
[2321 psi] [4351 psi]
Z
11037153 | BC00000043en-US1103