Option Dhmh - Hydraulic Proportional Control With Pcor And Bpd - Danfoss H1 Series Technical Information

Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Controls – nomenclature, description
Option DHMH – hydraulic proportional control with PCOR and BPD
74 | © Danfoss | December 2016
DH – hydraulic proportional / non-pressurized = max. displacement
MH – with Pressure Compensator Over Ride / with Brake Pressure Defeat (non-pressurized BPD =
PCOR active port not defined without pilot pressure difference on XA or XB)
Hydraulic schematic
MA L2 XA
A
B
MB XB
Where:
A, B Main pressure lines
L1, L2
Drain lines
M4, M5 Gauge port servo pressure
MA, MB
Gauge port system pressure
XA, XB Control pressure ports brake pressure defeat
X1
Control pressure port
N Speed sensor (optional)
Displacement (%) versus Input Command (bar)
100%
80%
60%
DH
40%
20%
0%
1
2
3
1 = Control ramp, 100% - 20% (14 bar [203 psi])
2 = Control ramp, 100% - 0% (17.5 bar [254 psi])
3 = Control start setting range
4 = PCOR start setting range
Grey area = Intended to be used for zero degree capability.
N
n
X1
X1
min
max
L1
M4 M5
P005907
DH
Option DHMH
Hydraulic actuator X1
Non-pressurized = max. displacement.
Full-pressurized = min. displacement.
PCOR
32°
6°
160 bar 300 bar
[2321 psi] [4351 psi]
4
bar
P005 904
11037153 | BC00000043en-US1103