Siemens SINAMICS G110

Commissioning 04/2005
SINAMICS G110 Operating Instructions
50 6SL3298-0AA11-0BP0
Since the digital input of a PLC has a high impedance, the digital output can also
be connected to the PLC using the internal power supply of the inverter using
terminal 6 of the inverter, see Figure 3-8 (D) below. An external 24 V power supply
is also permissible, see Figure 3-8 (C) below.
When the digital output is connected to a PLC with digital inputs having a high level
at 24 V, for example the Simatic PLC or the Logo! Microcontroller, the following
connection scheme is possible:
¾ Terminal 6 (Inverter's 24 V) is connected to Terminal 2 (Digital Output +)
¾ Terminal 1 (Digital Output -) is connected to the digital input terminal (e.g. I0.1)
on the PLC.
¾ Terminal 7 (Inverter's reference voltage 0 V) is connected to the electronic
ground of the PLC (e.g. 1M).
The sense of the optocoupler - "switch" (contacts open/contacts closed -
respectively high active and low active) depends on the signal selected by P0731.
For example, P0731=4 means drive running equals high active and is describe in
the Parameter List. The sense of the optocoupler may be inverter by using P0748.
Some typical configurations are shown in Figure 3-8 below.
G110
Auxiliary Relay/
Optocoupler
50 mA max.
0V
Relay Driver
+24V
1
2
G110
+24V
0V
LED Driver
50 mA max.
Rs
1
2
G110
+24V
0V
I0.0
1M
PLC
1
2
PLC Control
Using external 24V & 0V ref.
G110
+24V
0V
I0.1
1M
PLC
1
2
PLC Control
Using internal 24V & 0V ref.
7
6
AB
DC
Figure 3-8 Typical Configurations of the Digital Output