Zapi COMBI AC1 Manual de usuario descargar pdf (Pagina 8)

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3 SPECIFICATION FOR THE INPUT DEVICES

FILLING UP THE INSTALLATION KIT

The AC1 controller needs some external parts in order to work. The following

devices complete the kit for the AC1 installation.

3.1 Microswitches

- The microswitches must have a contact resistance lower than 0.1Ω and a

leakage current lower than 100µA.

- When full load connected, the voltage between the key switch contacts must

be lower than 0.1V.

- The microswitches (if not otherwise noted) must connect or break a battery

voltage to the inputs pins.

3.2 Accelerator unit

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

CNB#12 with about 12Vdc.

CPOT (CNB#10) signal ranges is from 0 to 10V.

Potentiometer value should be in the 0.5 - 10 KΩ 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

Figure 3–1 (potentiometer on one end at rest) in combination with a couple of

Travel demand switches. On request it is also possible the handling in the Right

side of Figure 3–1 (potentiometer in the middle at rest) in combination with at

least one Travel Demand switch. We strongly advice against the adoption of the

Right side configuration without travel demand switch at all, because of a safety

issue.

Figure 3–1

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 (see paragraph 13.3 PROGRAM VACC function), in either direction.

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Zapi COMBI AC1 Manual de usuario Pagina 8