RCU Link Cable Removal
In case by mistake we removed the rcu link cable from the primary pm867hi ,is it going to switch automatically to the other backup module? Or both the processors will stop?
I am talking about 800xa version 6.0.
Thanks a lot
In Configuration with BC810 If online change proves to be supported, after the caution above has been considered, and the BC810s are externally supplied with 24V the same steps as in configuration without BC810 can be followed.
In Configuration without BC810 To exchange a RCU link cable in a redundant CPU configuration, perform the following steps: 1. Switch OFF the Power for the backup CPU. (Power on the primary CPU must still be On.) 2. Disconnect the RCU link cable from the backup CPU. 3. Disconnect the RCU link cable from the primary CPU. 4. Attach the new RCU link cable to the primary CPU, note the UPPER orientation on the cable. 5. Attach the other end of RCU link cable to the backup CPU. 6. Switch ON the Power to the backup CPU. Do not replace the RCU link cable online in a previous version than 5.0. The support for online replacement also depends on hardware Product Revision levels. Please consult Release Notes (3BSE021377Rxxx) for detailed information. Do not leave the primary CPU with the RCU link cable disconnected for a prolonged time. If a power fail occurs while the cable is disconnected, the primary CPU cannot perform a startup when the power come back. The new cable-ends must be connected to the redundant CPUs (exactly) in the same way as the replaced cable was. Thus, the UPPER mark on the cable-end must be located to the same CPU as before the exchange
3BSE036351R5011 - “AC 800M ‐ Controller Hardware ‐ Hardware and Operation”
Yes, it will switch over to backup cpu (if removed from primary cpu).
And only old primary cpu will go fault as designed not both.
But to you can't replace cable online needs controller shutdown only controller can be replaced online provided bc810 is connected if ci used.