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INSTALLATION
19
2
2.3.4 Input
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:
NOTE
Polarity insensitive input assure full functionality even if pins A and B
are exchanged.
USER INTERFACE
OUT
MATRIX
V
CC
A
Vext
B
GND
V
+
~
~
+
-
I
in
30 Vdc Max.
Figure 17 - Input PNP Command Using External Power