Group 19, Motor Controls
SM 765, Sep ’06 Description • 19-1-9
Description of Connections - Hydraulic AC3
A1 CPOT Accelerator potentiometer wiper.
A2 PPOT Potentiometer positive: 10V output; keep load > 1KW.
A3 NPOT Negative of accelerator unit, tested for wire disconnection diagnosis.
A4 CM Common of LIFT ENABLE / 1st SPEED / 2nd SPEED / 3rd SPEED / 4th SPEED / HYDRO /
SR microswitches.
A5 LIFT ENABLE Input for potentiometer lifting enable input; it is active HIGH.
A6 1st SPEED Input for first speed request; it is active HIGH..
A7 3rd SPEED Input for third speed request; it is active HIGH
A8 AN.IN Free analog input.
A9 PPOT Potentiometer positive: 10V output; keep load > 1KW.
A10 -BATT -Batt.
A11 -BATT -Batt.
A12 HYDRO REQ Input for hydraulic steering request. Active high.
A13 SR Speed reduction input. Active low (switch opened).
A14 DIG.IN This is a digital input, free for customer request.
B1 KEY Connected to the power supply through a microswitch (CH) with a
10A fuse in series.
B2 PAUX Positive of the auxiliary output.
B3 PHYDRO Positive for the hydraulic steering contactor.
B4 4th SPEED Input for fourth speed request; it is active HIGH.
B5 SAFETY If not connected to -Batt the MC coil power output will be disabled.
Can also be used as a general purpose input.
B6 PTHERM Input for motor temperature sensor.
B7 CM Common of LIFT ENABLE / 1st SPEED / 2nd SPEED / 3rd SPEED / 4th SPEED / HYDRO /
SR microswitches.
B8 NAUX This output can be used for drive the main contactor coil (single pump configuration) or to drive
an auxiliary load (combi configuration)
B10 NHYDRO Output for driving an hydraulic steering contactor; drives the load to -Batt. Maximum current:
3A.
B11 2nd SPEED Input for second speed request; it is active HIGH.
B11 GND -Batt.
B12 NTHERM -Batt.
C1 CAN-L Low level CAN-BUS voltage I/O.
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