Option Thha - Hydraulic Two-Position 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
Option THHA – hydraulic two-position control with PCOR
82 | © Danfoss | December 2016
TH – hydraulic two-position control, non-pressurized = min. displacement / external pressure supply
HA – with Pressure Compensator Over Ride, without BPD
MA L2
A
B
MB X1
Where:
A, B Main pressure lines
L1, L2
Drain lines
M4, M5 Gauge port servo pressure
MA, MB
Gauge port system pressure
X1 Control pressure port
N
Speed sensor (optional)
Hydraulic actuator X1
Non-pressurized = min. displacement.
Full-pressurized = max. displacement.
Max. pressure for activation = 35 bar above motor case pressure
Max. pressure at non-pressurized control port X1 = case pressure
Displacement versus control signal versus PCOR pressure
1
2
X1 = 10 bar
W
Warning
Zero degree capability results in a high risk of overspeed and drops in efficiency if the motor operates
between 0–20% displacement.
N
n
max min
L1
M4 M5 P005950
PCOR
32°
6°
160 bar 300 bar
[2321 psi] [4351 psi]
3
P005 954
Option THHA
Where:
1 Max. displacement
2
Min. displacement
3 Start setting range
11037153 | BC00000043en-US1103