Siemens SIMATIC ET 200SP System Manual page 23

Connections of the 3DI/LC module
The figure below shows the connections of the 3DI/LC module.
①
②
③
④
⑤
⑥
Note
The digital inputs (1 to 4) are not isolated. The reference potential is M (5). Control the digital
inputs only via a unit supplied from the 24 V DC output (6).
Connect only cables of a width not exceeding 30 m to the 3DI/LC module.
Functions with inserted 3DI/LC module
You require the 3DI/LC module to use the following functions of the SIMATIC ET 200SP
motor starter, for example:
● Manual control (CCW/CW)
● Quick stop
● Limit position disconnection
You can find a list with all the functions enabled by the 3DI/LC module in the chapter
"Function overview" of the Manual ET 200SP motor starters
(https://support.industry.siemens.com/cs/ww/en/view/109479973).
Even if input actions are parameterized, no check is made to determine if the module is
inserted.
Motor starter
System Manual, 04/2016, A5E35582704002A/RS-AA/001
Digital input 3
Digital input 2
Digital input 1
Local control (manual local)
Ground
24 V DC output
System overview
2.4 3DI/LC module
23