Siemens SIMATIC ET 200SP System Manual page 21

Assembly
Risk of injury from automatic restart
When you mount the the 3DI/LC module, the motor starter can switch on autonomously if
an ON command (DI1 to DI3) is active. This can result in property damage or serious injury
caused by connected devices that are automatically started up.
Revoke the ON commands at DI1 to DI3 before mounting the 3DI/LC module.
To mount a 3DI/LC module on a SIMATIC ET 200SP motor starter module, proceed as
follows:
1. Wire the 3DI/LC module according to the connection diagram.
2. Slide the 3DI/LC module into the SIMATIC ET 200SP motor starter module until the
3DI/LC module engages.
Motor starter
System Manual, 04/2016, A5E35582704002A/RS-AA/001
WARNING
System overview
2.4 3DI/LC module
21