Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 342)

342 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 6 Troubleshooting
4. Verify the new rating shown in Port 10, P21 [Effctv I Rating].
Set Port 10, P20 [Recfg Acknowledg] to 1 “Acknowledge” to accept the
reconfiguration.
5. Press the Stop key on the HIM to clear the fault.
P20 [Recfg Acknowledg] automatically returns to 0 “Ready.”
Alarm 322 “N-1 Operation” is indicated, and persists, while the drive is in
this reconfigured state.
6. Run the reconfigured drive with reduced current and power limits.
Use the Re-Rate Feature
This procedure describes how to use the Re-Rate feature to run the drive at a
reduced rating because a drive assembly has been removed.
1. Save the drive’s current parameter settings using the Human Interface
Module (HIM), DriveExecutive, or DriveExplorer.
2. Remove all incoming power to the drive.
3. Disconnect all fiber-optic cables from the fiber interface board, including
the connections to the drive assemblies that will not be removed.
4. Remove the selected drive assembly from the cabinet.
5. Energize the drive.
With all the fiber-optic cables disconnected, “No Inverters” and “No
Converters” port verification errors are indicated.
6. On the HIM, press FIX to acknowledge the error then Enter to confirm.
7. Remove all incoming power to the drive. Verify that the bus capacitors
have discharged before continuing.
8. Reconnect the fiber-optic cables to the fiber interface board.
9. Energize the drive.
With the drive assembly removed, a “One Inverter” port verification error
is indicated.
10. On the HIM, press FIX to acknowledge the error then Enter to confirm.
An F361 “Rerate See Manual” fault is indicated.
ATTENTION: To avoid an electric shock hazard, verify that the voltage
on the buscapacitors has discharged completely before servicing.
Measure the DC bus voltage at the DC+ and DC- TESTPOINT sockets on
the front of the power module.