Connecting The External 24 V Dc Control Voltage; Protecting/Fusing The External 24 V Dc Control Voltage; Switching Over The Hardware To An External 24 V Dc Control Voltage - Siemens SINAMICS G180 Installation And Operating Instructions Manual

Electrical connection
6.7 External control voltage
6.7.3

Connecting the external 24 V DC control voltage

6.7.3.1

Protecting/fusing the external 24 V DC control voltage

NOTICE
External control voltage without fuse protection
If you use an external control voltage without suitable protection (e.g. fuses), then
overloads and short-circuits can occur. Material damage can result.
The device may only be operated with a protected external control voltage. Note the
following recommendation.
Install one of the following options to protect the external control voltage:
● Miniature fuse in accordance with EN 60127: 6 A, slow acting, maximum 100 VA
● Miniature circuit-breaker: 6 A, characteristic D, maximum 100 VA
6.7.3.2

Switching over the hardware to an external 24 V DC control voltage

● Change the converter from internal control voltage via the DC link to external control
voltage.
● Replace the PC board switch mode power supply L0353151 by PC board SNT24V
L0353161.
Procedure
Connect the external control voltage to the terminals 1 (0 V) and 2 (+24 V).
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Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007