Digital And Combi I/O Units - ABB IRB 6400R Product On-Line Manual

Troubleshooting Tools

2.8 Digital and Combi I/O units

All the I/O units have the same LED indications. The figure below shows a digital
I/O unit, DSQC 328.
The description below is applicable for the following I/O units:
Digital I/O DSQC 328, Combi I/O DSQC 327,
Relay I/O DSQC 332 and 120 VAC I/O DSQC 320.
Status LED's
1 2 3
X1
1
X3
1
12
Designation
IN
OUT
MS/NS
20
OUT
4 5 6 7 8
IN
10
10
1
Colour
Yellow
Yellow
Green/red
MS
9 10 11 12
NS
X2
1
X4
1
X5
Description/Remedy
Lights at high signal on an input.
The higher the applied voltage, the
brighter the LED will shine. This
means that even if the input voltage
is just under the voltage level "1",
the LED will glow dimly.
Lights at high signal on an output.
The higher the applied voltage, the
brighter the LED will shine.
See section 2.14.
OUT
13 14 15 16
IN
10
10
Product Manual