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ADEZP0DC - AC-2 FLASH INVERTER - User Manual Page - 7/72

3 SPECIFICATION FOR THE INPUT DEVICES

FILLING UP THE INSTALLATION KIT

The AC-2 FLASH inverter needs some external parts in order to work. The

following devices complete the kit for the AC-2 FLASH installation.

3.1 Microswitches

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

leakage current lower than 100 µA.

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

must be lower than 0.1 V.

- The microswitches send a voltage signal to the microprocessor when a

function request (for ex.: running request) is made.

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

CNE#2.

Potentiometer output signal must be input to CPOT (CNE#1) signal range is from

0 to 10 V.

The negative supply of the potentiometer has to be taken from CNE#3.

Potentiometer value should be in the 0.5 – 10 kΩ range; generally, the load

should be in the 1.5 mA to 30 mA 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

figure (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

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 Console. This enables adjustment of the minimum and maximum useful

signal level (PROGRAM VACC function), in either direction. This function is

unique when it is necessary to compensate for asymmetry with the mechanical

elements associated with the potentiometer, especially relating to the minimum

level.

The sequence of procedure is described in the programming console manual.

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Zapi AC-2 Manual de usuario Pagina 7