System assembly, construction and connection
AC500 (Standard) > Connection and wiring
2.6.4.1.1
Power supply for processor modules
The supply voltage of 24 V DC is connected to a removable 5-pin terminal block. L+/M exist
twice. It is therefore possible to feed e.g. external sensors (up to 8 A max. with 1.5 mm
conductor) via these terminals.
Pin assignment
Pin Assignment
Terminal block
removed
2.6.4.2
Terminals for power supply and the COM1 interface
Terminal type:
Number of cores per ter-
Spring terminal
minal
1
1
1 with wire-end ferrule
(without plastic sleeve)
1 with wire-end ferrule (with
plastic sleeve)
1 (TWIN wire end ferrule)
2.6.4.3
Terminals at the terminal unit
990
Label
L+
L+
M
Terminal block
inserted
M
Conductor type
Solid
Flexible
Flexible
Flexible
Flexible
1.0
2.0
3.0
1.1
2.1
3.1
1.2
2.2
3.2
1.3
2.3
3.3
1.4
2.4
3.4
1.5
2.5
3.5
1.6
2.6
3.6
1.7
2.7
3.7
1.8
2.8
3.8
1.9
2.9
3.9
3ADR010278, 3, en_US
Function
Description
+24 V DC
Positive pin of the
power supply voltage
+24 V DC
Positive pin of the
power supply voltage
0 V
Negative pin of the
power supply voltage
0 V
Negative pin of the
power supply voltage
FE
Functional earth
Cross section
0.08 mm² to 1.5 mm²
0.08 mm² to 1.5 mm²
0.25 mm² to 1.5 mm²
0.25 mm² to 0.5 mm²
0.5 mm²
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
2
2022/01/31