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10 QLS The stepper motor has four channels DL, QL, DLS, QLS. DL and QL
are already assigned on the connector CNB. DLS and QLS are the
stepper motor channels for the Supervisor microprocessor. This pin
is the QLS input.
11 CPOT This is the wiper connection for the steer feedback potentiometer.
12 K3 Pin # 12 of CNA connector provides a max 2Amps NPN open
collector driver. GND is applied by switching on the key and GND is
removed when an automatic centering operation is finished.
13 CANL This is the low reference of the CAN interface.
14 CANL Same of pin #13. Pin #13 and #14 are internally connected together.
15 REV A request to travel in the Load Wheels direction must provide a
signal on this input, either at battery positive or battery negative.
Either level may be selected by configuring Jumper J2.
16 CHA This is the first channel input for the optional encoder.
17 CHB This is the second channel input for the optional encoder.
18 INDIC Outputs a scaled and converted 0 to 4.5Vdc steer angle feedback
potentiometer position for the steer angle indicator gauge LEDs.
0Vdc corresponds to the steer angle feedback pot voltage that was
memorized using the ZAPI hand control for SET MAX FB POT.
4.5Vdc corresponds to the steer angle feedback pot voltage that was
memorized using the ZAPI hand control for SET MIN FB POT . See
10.7.6 to reverse the turning direction displayed.
19 PPOC2 Not Used. This is the higher voltage connection for a second
handwheel set point potentiometer. To improve the safety a second
optional command pot is foreseen. While the first set point pot is
Master microprocessor processed, this second set point pot is
Supervisor microprocessor processed. The wiper of this second set
point pot should be connected to the Pin #9 of CNB connector. The
lower voltage end should be connected to the Pin #3 of CNB
connector. This steering option requires modifications on the
logic card and cannot be used when a tacho-generator or a
stepper motor card is chosen. This pin is internally connected to a
5Vdc reference through a 470 Ohms resistance.
20 DLS The stepper motor has four channels DL, QL, DLS, QLS. DL and QL
are already assigned on the connector CNB. DLS and QLS are the
stepper motor channels for the Supervisor microprocessor. DLS
enters in this connection.
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