Failure And Replacement Of An Im 460 And Im 461 Interface Module - Siemens SIMATIC PCS 7 System Manual

Failure and replacement of components during redundant operation
11.1 Failure and replacement of central components
Procedure
The described double fault results in loss of redundancy and partial or complete failure of
switched DP or PN I/O. In this event proceed as follows:
Step
1
2
3
4
11.1.6

Failure and replacement of an IM 460 and IM 461 interface module

Starting situation
Failure
The S7-400H is in redundant system mode and
an interface module fails.
Procedure
Follow the steps below to replace an interface module:
Step
1
2
3
180
What to do?
Switch off one subsystem.
Replace the faulty components.
Turn the subsystem back on.
Start the CPU.
What has to be done?
Turn off the power supply of the central
rack.
Turn off the power supply of the expansion
unit in which you want to replace the inter-
face module.
Remove the interface module.
How does the system react?
–
–
LEDs IFM1F and IFMF2F go off. The
•
LED MSTR of the switched on subsys-
tem goes out.
The CPU performs an automatic LINK-
•
UP and UPDATE.
The CPU changes to RUN (redundant
•
system mode) and operates as reserve
CPU.
How does the system react?
The connected expansion unit is turned off.
•
Both CPUs report the event in the diagnostic
•
buffer and via OB 86.
How does the system react?
The partner CPU switches to single
•
mode.
–
–
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 09/2014, A5E32631667-AB