![Rockwell Automation Allen-Bradley PowerFlex 4M Hardware Service Manual Download Page 119](http://html.mh-extra.com/html/rockwell-automation/allen-bradley-powerflex-4m/allen-bradley-powerflex-4m_hardware-service-manual_1475425119.webp)
Rockwell Automation Publication 20P-TG003B-EN-P - September 2021
119
Chapter
4
Start Up After Repair
Before applying power to a repaired drive, perform the following tests:
•
Check the Armature SCR Modules on page 27
•
Check the Field SCR/Dual Diode Module on page 33
•
Complete the Test With the Motor, Without a Mechanical Load below.
Test With the Motor, Without
a Mechanical Load
This test allows you to measure several operating parameters and diagnose
problems without connecting the motor to its mechanical load.
This procedure requires a HIM to configure and autotune the drive. If you prefer,
you can use the DriveExplorer™ or DriveExecutive™ software.
1.
Verify that the input power wiring and grounding is connected.
2.
Verify that the motor cables are connected.
3.
Verify that the motor load is disconnected.
4.
Verify that the control board DIP switches are set correctly. See
Control Circuit Board on page 58
for more information.
5.
Apply power to the control circuits (terminals U2 and V2) of the drive.
6.
Verify that the following parameter values are set correctly:
•
45 [Max Ref Speed] is set to the motor nameplate base speed.
•
162 [Max Feedback Spd] is set to the motor nameplate base speed.
•
175 [Rated Motor Volt] is set to the motor rated nameplate armature
voltage.
•
179 [Nom Mtr Arm Amps] is set to the rated motor nameplate
armature current.
•
280 [Nom Mtr Fld Amps] is set to the rated motor nameplate field
current.
ATTENTION:
Power must be applied to the drive to perform the following start-
up procedure. Some of the voltages present are at incoming line potential. To
avoid electric shock hazard or damage to equipment, only qualified service
personnel should perform the following procedure. Thoroughly read and
understand the procedure before beginning. If an event does not occur while
performing this procedure,
Do Not Proceed. Remove Power
including user
supplied control voltages. User supplied voltages may exist even when main AC
power is not applied to then drive. Correct the malfunction before continuing.