Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

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MAINTENANCE
Troubleshooting
182
oSPD
(17)
Over Speed Warn
Over speed warning
Action and Reset
Action condition The encoder feedback speed
Action time N/A
Reset method Automatically
Reset condition When drive stops, warning clears
Recorded N/A
Possible Causes Corrective Action
• Improper setting for FOC bandwidth of
speed observer
• Improper bandwidth setting for ASR
speed controller
• Incorrect motor parameter setting
• Malfunction caused by interference
• Decrease setting value for FOC bandwidth of speed observer.
• Increase the bandwidth setting for ASR speed controller.
• Reset motor parameter and run parameter tuning.
• Verify wiring of the control circuit, and wiring/grounding of the main circuit to prevent interference.
Warning Display Description
ot1 (20)
Over Torque 1
Over-torque 1 warning
Action and Reset
Action condition
[SET-48]
Action time
[SET-50]
Related parameters
[SET-47]
= 1 or 3
Reset method Automatically
Reset condition When input current < (
[SET-48]
– 5%), the Ot1 warning automatically clears
Recorded N/A
Possible Causes Corrective Action
• Incorrect parameter setting
• Mechanical error (e.g. mechanical lock
due to over-torque)
• The load is too large
• Accel./ Decel. time and working cycle is
too short
• V/F voltage is too high
• The motor capacity is too small
• Over-load during low-speed operation
• The torque compensation is too large
• Improper parameter settings for the
speed tracking function (including
restart after momentary power loss and
restart after fault)
• Configure the settings for
[SET-48]
and
[SET-50]
again.
• Remove the causes of malfunction.
• Decrease the loading. Replace with a motor with larger capacity.
• Increase the setting values for
[SET-11]
and
[SET-12]
(accel./ decel. time)
• Adjust the settings for
[VFD-02]
– to be
01
to
08
(V/F curve), especially the setting value for the mid-
point voltage (if the mid-point voltage is set too small, the load capacity decreases at low-speed).
• Replace with a motor with larger capacity.
• Decrease the loading during low-speed operation. Increase the motor capacity.
• Adjust the torque compensation value
[Motor-17]
until the output current decreases and the motor
does not stall.
• Correct the parameter settings for speed tracking. Start the speed tracking function. Adjust the
maximum current for
[PROT-39]
speed tracking.
Warning Display Description