Maintenance
11.1 Replacing components of the S7-1500R/H redundant system
S7-1500R/H redundant system
260
System Manual, 10/2018, A5E41814787-AA
11.1.2
Replacing defective R/H-CPUs
Initial situation
One of the two R/H-CPUs has failed or the R/H-CPU is no longer working.
The S7-1500R/H redundant system is in the RUN-Solo system state.
Requirements
●
Read the information in the section Checking before replacing components (Page 257).
●
The replacement CPU has the same article number and firmware version as the failed
R/H-CPU.
●
The replacement CPU has a SIMATIC memory card with the correct storage capacity.
●
The primary CPU has not disabled SYNCUP (default).
Procedure for replacing R/H-CPUs
Proceed as follows to replace an R/H-CPU in the redundant system:
1.
Switch off the supply voltage to the failed R/H-CPU.
2.
Remove the connector for the supply voltage.
3.
Disconnect the bus connector for the PROFINET ring. Then remove the bus connector
from the R/H-CPU.
4.
For H-CPUs only: Disconnect the redundancy connections (fiber-optic cables) at the H-
CPU.
5.
For H-CPUs only: Pull the synchronization modules out of the H-CPU.
6.
Remove the failed R/H-CPU.
7.
Install the replacement CPU with the SIMATIC memory card inserted and the mode
selector in the STOP position.
8.
For H-CPUs only: Insert the synchronization modules in the replacement CPU.
9.
For H-CPUs only: Insert the redundancy connections (fiber-optic cables) in the
synchronization modules.
10.Insert the PROFINET cables in the R/H-CPU.
11.Push the connector for the supply voltage into the socket on the R/H-CPU.
12.Switch the supply voltage back on.
13.Switch the replacement CPU to the RUN operating state.
Result
1.
The replaced R/H-CPU executes SYNCUP.
2.
The replaced R/H-CPU switches to the RUN-Redundant operating state and operates as
backup CPU.
Summary of Contents for Simatic S7-1500H
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