29
8011703/XF49/V3-1/2019-09| SICK
O P E R A T I N G I N S T R U C T I O N S | VICOTEC320
Subject to change without notice
INSTALLATION
5
Fig. 18: I/O modules and circuit diagram of analog modules with CO and NO
x
inlets/outlets
▸
Connect the power supply.
Checking cabling
Correct cabling can be checked as follows (
see Fig. “Location of LEDs in the connection
unit for the analog/digital variant”, page 30
●
The gateway LEDs are green (State, CAN, I/O).
●
The error LED on the gateway is off.
●
The 120 V LED and the 24 V LED are green.
●
The status LEDs of the I/O module blink green.
●
The reflector heating LED is green.
●
The alignment LEDs on the sender/receiver unit flash sequentially.
Module
LED
Significance
Digital out
Green
Active
Digital in
Green
Contact closed
Analog out
Green
Actual current value = rated current value
Analog in
Green
Off
0 mA
≤
I
on
< 22 mA
I
on
≥
22 mA
