MDC Torque
Description
Value
Torque required to move handle to maximum displacement
1.4 N•m [12.39 lbf•in ]
Torque required to hold handle at given displacement
0.6 N•m [5.31 lbf•in]
Maximum allowable input torque
20 N•m [177 lbf•in]
C
Caution
Volumetric efficiencies of the system will have impacts on the start and end input commands.
Neutral Start Switch (NSS)
The Neutral Start Switch (NSS) contains an electrical switch that provides a signal of whether the control
is in neutral. The signal in neutral is Normally Closed (NC).
Neutral Start Switch schematic
P005 702
M14
M5
M4
M3
Neutral Start Switch data
Max. continuous current with switching
8.4 A
Max. continuous current without switching
20 A
Max. voltage
36 V
DC
Electrical protection class
IP67 / IP69K with mating connector
Case Gauge Port M14
The drain port should be used when the control is mounted on the unit’s bottom side to flush residual
contamination out of the control.
Control-Cut-Off (CCO) and Brake Release Valves
The H1 tandem pumps offer an optional Control-Cut-Off valve integrated into the pump center section
and a separate brake release valve allowing the controls to be activated before activating any auxiliary
functions.
The CCO valve shunts charge pressure from the pump controls allowing the servo springs to de-stroke
both pumps. The valve is normally open for fail-safe operation. The solenoid must be energized for the
pump to operate. When the machine control circuits energize the CCO solenoid, it connects charge
supply from the charge gallery to the pump controls.
Service Manual
H1T 045/053, 060/068 Axial Piston Tandem Pumps
Operation
20 |
©
Danfoss | September 2020
AX152886481761en-000405