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AF6ZP0AL - COMBIAC0 & ACE0 - User Manual
3 SPECIFICATION FOR THE INPUT DEVICES
FILLING UP THE INSTALLATION KIT
3.1 Digital inputs
COMBI AC0 / ACE0 digital inputs work in the voltage range [-Batt; +Batt].
Related command devices (microswitches) must be connected to +B (typically to
key voltage).
Pull-down resistance to –Batt is built-in.
Functional devices (like FW, BACK, LIFT, DESCENT, HORN, H&S, TILLER,
BELLY switches) are Normally Open; so related function becomes active when
the microswitch closes.
Safety devices (like CUTBACK switches) are Normally Closed; so related
function becomes active when the microswitches opens.
The DI11 and DI12, which are not available in the Sense Coil version, are
activated closing the external microswitch to –Batt.
3.1.1 DI0 ÷ DI10 technical details – 24 V system
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Switching threshold: 4V [±0,5V]
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Input impedance:
4,5kOhm [±0,5kOhm]
3.1.2 DI0 ÷ DI10 technical details – 48 V system
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Switching threshold: 4,3V [±0,5V]
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Input impedance:
13,5kOhm [±1kOhm]
3.1.3 Microswitches
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It is suggested that microswitches have a contact resistance lower than
0,1Ohm
and a leakage current lower than 100µA.
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When full load connected, the voltage between the key switch contacts must
be lower than 0.1V.
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If the microswitch to be used has different characteristic, it is suggested to
discuss them and their application with Zapi technicians.
3.2 Analogue 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#25.
Potentiometer output signal must be input to CPOT1 (CNA#15) signal range is
from 0 to 10V.
If the pedal wire disconnection diagnosis is implemented (“PEDAL WIRE KO”
warning) the negative supply of the potentiometer has to be taken from NPOT
(CNA#30), otherwise has to be taken from CNA#5 (GND).
Potentiometer value should be in the 0.5 - 10 KOhm range; generally, the load
should be in the 1.5mA to 30mA range. Faults can occur if it is outside this range.
The standard connection for the potentiometer is the one in the Left side of next
