INSTALLATION

2

 

2.3.4Input

An opto-coupled and polarity insensitive input is available on the 25-pin connector. The pinout is the following:

Pin

Name

Function

18

EXT_TRIG A

External trigger (polarity insensitive)

19

EXT_TRIG B

External trigger (polarity insensitive)

When current flows through the EXT_TRIG input, the yellow LED (Figure A, 6) is on.

The External Trigger can be used in One Shot Mode or in Phase Mode. Its main functions are:

•acquisition trigger in One Shot Mode

•phase-ON/phase-OFF command in Phase Mode

•match code storage command.

This input can be driven by either a PNP or NPN type command. The connections are indicated in the following diagrams:

Polarity insensitive input assure full functionality even if pins A and B are exchanged.

NOTE

MATRIX

Vext USER INTERFACE

 

30 Vdc Max.

 

 

V+

 

A

OUT

VCC

~

I in

+

-

 

~

GND

 

B

 

 

Figure 17 - Input PNP Command Using External Power

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