safety relay and the external contactors are monitored to ensure that they are functioning
correctly.
3.8.14 Auxiliary power supply
3.8.14.1 1 AC auxiliary voltage
The customer must provide a 1 AC auxiliary power supply for the following components:
● Cabinet lighting
● Service socket outlets
● Anti-condensation heating
● Open-loop and closed-loop control
Refer to the drive technical data for auxiliary power supply current rating. The terminal
assignment is provided in the circuit diagram of the drive.
See also
Connecting the auxiliary voltage (Page 77)
3.8.14.2 3 AC auxiliary voltage supply
The following components require a 3 AC auxiliary voltage supply:
● Fan
● Open-loop and closed-loop control
● Protection and monitoring equipment
● DC link precharging
● Cooling unit pumps
Refer to the technical data for the auxiliary power supply current rating. The terminal
assignment is provided in the circuit diagram.
3.8.15 Customer terminal strips
The signals are allocated to various terminal strips according to voltage level. The cables are
visually distinguished from one another by various colors. Barriers mechanically separate
cables carrying different potentials on one terminal strip. The terminals are suitable for cables
with a cross-section of 2.5 mm
2
.
The default setting and interfaces of the customer terminal strips can be found in the circuit
manual. For information about the position of the customer terminal strips within the cabinet,
see the layout diagrams.
Description
3.8 Components
SINAMICS PERFECT HARMONY GH150 6SL3825
44 Operating Instructions 05/2020
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