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3.5 DESCRIPTION OF CONNECTORS - PUMP CONFIGURATION
The AC3 and AC4 have been designed to be produced with two different types of I/O
connector: One AMP SAAB 29 poles connector or six Molex Minifit connectors.
3.5.a Amp Saab connector
A1 PPOT Potentiometer positive: 10V output; keep load > 1KW.
A2 NPOTB -Batt.
A3 PTHERM Input for motor temperature sensor.
A4 NTHERM -Batt.
A5 -BATT Battery negative.
A6 NAUX This output can be used for drive the main contactor coil (single
pump configuration) or to drive an auxiliary load (combi configura-
tion)
A7 NBRAKE Output for driving an hydraulic steering contactor coil; drives the load
to -Batt maximum current : 3A.
A8 PAUX Positive of the auxiliary output.
A9 CM Common of LIFT ENABLE / 1st SPEED / 2nd SPEED / 3rd SPEED
/ 4th SPEED / HYDRO / SR microswitches.
A10 KEY Connected to the power supply through a microswitch (CH) with a
10A fuse in series.
A11 CPOT Potentiometer wiper input.
A12 NPOT Negative of lifting potentiometer, tested for wire disconnection diag-
nosis.
A13 AN. IN. Free analog input.
A14 CAN-H High level CAN-BUS voltage I/O.
A15 CAN-L Low level CAN-BUS voltage I/O.
A16 LIFT ENABLE Input for potentiometer lifting enable input; it is active HIGH.
A17 1st SPEED Input for first speed request; it is active HIGH.
A18 HYDRO REQ. Input for hydraulic steering request. Active high.
A19 SR Speed reduction input. Active low (switch opened).
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