Zapi COMBI AC1, Руководство пользователя

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3.2 Analog unit
The analog input can be connected to an accelerator unit if the Zapi can or serial
tiller is not used.
The accelerator unit can consist of a potentiometer or an Hall effect device.
It should be in a 3-wire configuration. The potentiometer is supplied through
CNA#26 [AmpSaab connector] OR CNA#25 [Ampseal connector].
Potentiometer output signal must be input to CPOT (CNA#24 for AmpSaab
connector, CNA#15 for Ampseal connector) signal range is from 0 to 10V.
The negative supply of the potentiometer has to be taken from CNA#23
[AmpSaab connector] OR CNA#5 [AmpSeal connector]
Potentiometer value should be in the 0.5 - 10 K
Ω
range; generally, the load
should be in the 1.5mA to 30mA range. Faults can occur if it is outside this range.
This AI is input to both microcontrollers, for safety purpose (double check in real
time).
The standard connection for the potentiometer is the one in the Left side of next
figure (potentiometer on one end at rest) in combination with a couple of Travel
demand switches (figure refers to AmpSaab connector). On request it is also
possible the handling in the Right side of next figure (potentiometer in the middle
at rest) still in combination with a couple of Travel demand switches.
The Procedure for automatic potentiometer signal acquisition is carried out using
the Hand Set. This enables adjustment of the minimum and maximum useful
signal level, in either direction.
3.3 Other analog control unit
If the Zapi can tiller is not used, input CNA#25 [AmpSaab connector] or CNA#30
[AmpSeal connector] is an analog input, whose typical application is a
proportional command to enable a lifting/lowering function. It is possible to use
this input for an alternative function like a proportional braking.
It should be in a 3 wire configuration. Potentiometer value should be in the 0.5-
10K
Ω
range. Generally, the load should be in the 1.5mA to 30 mA range.
The CPOTL [CNA#25 AmpSaab connector, CNA#30 AmpSeal connector] signal
range is from 0 to 10V.
Use CNA#26 [CNA#25] (positive) and CNA#41 [CNA#5] (negative) to supply it.
In the AmpSaab version the NPOT input [CNA#23] can be used as third analog
input. In this case use CAN#41 as negative supply of the traction potentiometer
(the “PEDAL WIRE KO” warning is lost).
AEQZP0BA – COMBI AC1 - User Manual Page - 9/86