Product specifications

Section 5 Maintenance Exchange of CPU in Redundant Configuration with BC810
3BSE036351-510 A 201
5. Gently ease the unit/baseplate sideways in order to release the contacts of the
unit.
6. Turn the locking device anti-clockwise to the OPEN position (1) and ease the
unit baseplate outward and upward at the base. Lift the unit to remove it from
the DIN-rail.
7. Mount the new unit (which already has the correct firmware installed). See
Mounting AC 800M Units onto DIN-Rail on page 65. Fit the unit to BC810
CEX-Bus.
8. Reconnect the Power Supply Socket to the new processor unit.
9. Reconnect the optical ModuleBus and the RCU Link Cable.
10. Reconnect the Control Network cables.
11. Press the INIT push button on the replaced processor unit.
12. Observe the startup procedure and make sure that Dual mode is reached, that is,
the Dual LED is lit on both processor units.
The unit baseplates are easily disconnected from each other by gently prying
them apart with a blade screwdriver (see
Figure 23 on page 74).
The F(ault) LED of the new processor unit is temporarily lit when the power
supply is connected. This is not an indication of fault.
Pressing the INIT button initiates the restart that is required to keep the new
processor unit in redundant mode.
During synchronization, the new processor unit inherits the IP address from the
running processor unit.
Reuse of CPU modules replaced from redundant configurations within the
same control network, might cause control network problems due to the MAC
and IP address handling. See
MAC and IP Address Handling in Redundant
Configuration on page 49. Such reuse should not be fulfilled unless both the
replaced module and the module previously acting together with it in redundant
configuration are known to be restored from the previous mutual address swap.
It is recommended to set up an IP-config session and use the “Restore factory
settings” option subsequently followed by reassignment of the IP address or
assignment of a new IP address.