Hi all,
I am having a problem with a powerflex 753 we have on site and keep getting input phase loss. The drive has been running for a long time, maybe 5 years, but probably more with no issues. It is a 45kW ND. It is running the main motor for an aluminum cupping press. The fault only happens when it goes into high speed (only 42ish amps in high speed) and only after approx 5 mins of high speed running and only been happening the last few days. I've tried the following to rectify the problem but not having any success.
-Increasing p463 from default (325) to 400, didn't want to go too high and risk damaging the drive.
-Replacing for a brand new drive
-Replacing the circuit breaker feeding drive
-Checked all connections, all fine
-Incoming voltages are good, only 20mA dropped over the CB on all phases
-Other drive in the same board has no issues
Unfortunately, don't have access to power monitoring equipment to watch incoming power. Doesn't have a filter installed but has been working fine for years so I don't think that is the problem.
Any help would be much appreciated.
Cheers
I am having a problem with a powerflex 753 we have on site and keep getting input phase loss. The drive has been running for a long time, maybe 5 years, but probably more with no issues. It is a 45kW ND. It is running the main motor for an aluminum cupping press. The fault only happens when it goes into high speed (only 42ish amps in high speed) and only after approx 5 mins of high speed running and only been happening the last few days. I've tried the following to rectify the problem but not having any success.
-Increasing p463 from default (325) to 400, didn't want to go too high and risk damaging the drive.
-Replacing for a brand new drive
-Replacing the circuit breaker feeding drive
-Checked all connections, all fine
-Incoming voltages are good, only 20mA dropped over the CB on all phases
-Other drive in the same board has no issues
Unfortunately, don't have access to power monitoring equipment to watch incoming power. Doesn't have a filter installed but has been working fine for years so I don't think that is the problem.
Any help would be much appreciated.
Cheers