Hi,
I just wondering am I thinking right or not about the L1ZX logic in Mark VIe? it is like this :


and L1STOP is like this :



The question is why GE uses L1STOP and L43CA in the same line for L1ZX logic?
The reason that I ask this is that L1STOP has NORMALLY Open/Close contact L43CA in itself. For instance, when L1STOP picks up with L1STOP_CPB EGD and normally close contact L43CA, L1ZX will be active with normally close contact L43CA!!

Am I right? is this a conflict or not? ;/

 

no_bug, I would suggest that you request a PAC or ER case through GE to review this logic. Based on the logic you show above the B contact with variable L43CA driving logic for RUNG_56 should not be included in either rung. The L43CA contact B for the logic in RUNG will allow the Cooldown to be selected off using the R43STPSEL or the HMI L1STOP_CPB when the unit is in REMOTE mode, L43CA. Otherwise when the unit is not in REMOTE mode then the use of the STOP signal will not turn off Cooldown. In LOCAL mode the signal L43CDOFF will turn off cooldown as long as the cooldown timer L62CD is satisfied.