Plugging In Terminal Blocks - Siemens Sirius 3RK3 System Manual

5.3.10

Plugging in terminal blocks

Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Before starting work, therefore, disconnect the system and devices from the power supply.
Requirement
You must have removed the terminal blocks, for the purpose of replacing a device, for
example.
Procedure when plugging in the terminal blocks
NOTICE
Removable terminal blocks are mechanically coded to prevent polarity reversal
The removable terminal blocks are mechanically coded to prevent polarity reversal and are
labeled with A, B, C or D on the inside. Only use the slots shown in the diagram below.
NOTICE
Plug-in sequence
Connect terminal block B before terminal block A, and D before C.
Step Operating instruction
1 Insert the removable terminal block into the
mechanically coded guide rail of the device
(1).
2 Slide the removable terminal block back until it
audibly engages.
3 Check that the clip of the removable terminal
block closes flush with the front panel (2).
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
WARNING
Description of the hardware
5.3 Connecting/wiring
Figure
83