prakasha
Member
Hi Everyone,
We went through a tough time that Power flex-250KW Drive Thyristor burn out and MCCB tripped at feeder side, but in SCADA VFD was showing running and non of the interlocks were activated due to Old values were showing in PLC. Why and How will this happen and is it a normal phenomena that PLC doesn't updates when this unexpected things happened like drive burn out.
It it possible to take heart beat signal from Power Flex dives to update communication status between PLC & VFD.
Or Hardware wiring can be done for drive healthy status.
Kindly respond this query as this is very much concern to me
We went through a tough time that Power flex-250KW Drive Thyristor burn out and MCCB tripped at feeder side, but in SCADA VFD was showing running and non of the interlocks were activated due to Old values were showing in PLC. Why and How will this happen and is it a normal phenomena that PLC doesn't updates when this unexpected things happened like drive burn out.
It it possible to take heart beat signal from Power Flex dives to update communication status between PLC & VFD.
Or Hardware wiring can be done for drive healthy status.
Kindly respond this query as this is very much concern to me