Issue: Although the BPH motors that are used with the Lexium 17 and 15 range of Servo drives are factory MSET, occasionally there may be a need to MSET this in the field due to commutation error being reported.
Product Line: Lexium BPH
Cause: Due to an incorrect offset value set in the drive, the drive may report a F25, commutation error.
Resolution: This resolution discusses the MSET procedure for a BPH motor with a Lexium 17/15 series drive.
Proper commutation and position feedback are required to interface a particular servo drive and motor combination. When using Schneider Electric BPH motors and Lexium drives, this setup (or “characterization”) process has been completed and verified for the user at the factory. Occasionally there may be a need to MSET the BPH motor and this is detailed in this procedure.
Perform the following steps, as described, and in the order presented, to complete the MSET procedure.
1. Disconnect the Motor from the Mechanical Load
2. Electrical Connections
A. Verify that the required electrical connections for drive power, logic power, motor power and resolver are as described in the Lexium drive user manual.
B. Apply 24VDC logic and AC input power to confirm proper drive startup sequence and self-checks.
Follow this MSET procedure only if the drive firmware is ver 5.51 and above.
Connect to the drive using Hyperterm…
- Type OPMODE followed by Enter – note down the Opmode (xx) the drive is set to.
- Type OPMODE 2 followed by Enter – switch to digital torque mode
C. Type 'EN' followed by Enter.
D. Type "Zero" followed by ENTER - Motor shaft will jump to nearest pole. MPHASE value is automatically set.
- Type SAVE
- Type OPMODE xx followed by enter ( where xx is the default value that was originally set for the application.)
G. Type COLDSTART (the drive will reboot)
This completes the MSET procedure.