Siemens S5-135U/155U appendix Removing and Inserting Modules, Step Action

Digital Input/Output Modules

8.2.2Removing and Inserting Modules

!

Warning

When removing and inserting the front connector during operation, hazardous voltages of more than 25 V AC or 60 V DC may be present at the module pins. When this is the case at the front connector, live modules may only be replaced by electrical specialists or trained personnel in such a way that the module pins are not touched. During operation, the front connector and module must not be removed or inserted without the enable jumper or active enable circuit.

Install a digital input/output module as follows:

Step

1

2

3

4

Action

Release the upper locking bar on the subrack and swivel it up- wards and out.

Insert the module at the desired slot in the subrack and push it back in the guides.

Latch the module by rotating the locking pin by 90° at the lower end of the module.

Engage the front connector on the support pin of the module and swivel it up. The width of the support pin also provides keying to prevent front connectors from being fitted to the wrong modules (e.g. 230 V AC front connector on 24 V DC modules).

5

Tighten the screw in the upper part of the front connector.

8-18	System Manual
	C79000-G8576-C199-06