6.7 Connecting the auxiliary voltage
Connect 1 AC auxiliary voltage
Connect the 1 AC auxiliary voltage e.g. for SITOP, closed-loop control, open-loop control,
cabinet lighting, service sockets, anti-condensation heating etc. to the relevant terminal blocks.
The maximum cross section of the cables is 2.5 mm
2
.
You will find detailed information in the terminal diagram or in the circuit manual under
"Technical specifications and drawings."
Connect 3 AC auxiliary voltage
Connect the 3 AC auxiliary voltage for e.g. fans, precharging etc. to the relevant terminal
blocks. The maximum cross section of the cables is 6 mm
2
.
With options C30 - C49, the auxiliary voltage can be drawn from the matching transformer.
You will find detailed information in the terminal diagram or in the circuit manual under
"Technical specifications and drawings."
See also
Technical data and drawings (Page 147)
6.8 Connecting power cables
6.8.1 Preparations
When connecting the cables, observe all the conditions regarding conductor protection. Do not
exceed the permitted cable lengths between the converter output and motor. The distance
between the motor cable and the signal cable should be at least 20 cm. Do not lay grid-side and
motor supply cables in parallel to each other.
The positions of the connections are shown in the layout diagrams. Detailed wiring notes for the
converter are contained in the circuit manual of the converter.
Select the appropriate cable depending on the following conditions:
● Routing conditions
● Accumulation of cables
● Ambient temperature
● Bending radii
● Output voltage
Observe the connection capabilities on the converter and on the motor terminal box.
Electrical connection
6.8 Connecting power cables
SINAMICS PERFECT HARMONY GH150 6SL38253AE412AA1-Z
Operating Instructions Rev.201910281231 EXAMPLE 87
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