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

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MAINTENANCE
Troubleshooting
180
oH3
(22)
Motor Over Heat
Motor over-heating warning. The AC motor drive detects the temperature inside the motor is too high
Action and Reset
Action condition PTC input level > [PROT-20] (default = 50%)
or
PT100 input level > [PROT-31] (default = 7 V)
Action time Immediately
Related parameters [PROT-19]
For PTC: When [PROT-19] = 0 and when the temperature is equal to or less than [PROT-20] , the oH3 warning automati -
cally clears. When [PROT-19] = 0, it automatically resets.
For PT100: When [PROT-19] = 0 and when the temperature is < [PROT-30] , the oH3 warning automatically clears.
If the temperature is between [PROT-30] and [PROT-31] , the frequency outputs according to the operating frequency set -
ting for [PROT-06] to [PROT-58] .
Reset method Automatically
Reset condition For PTC: When the temperature is equal or less than [PROT-20] , the oH3 warning automatically clears
For PT100: When the temperature is < [PROT-30] , the oH3 warning automatically clears.
Recorded N/A
Warning Display Description
OL-2 (21)
OL-2
Overload 2 warning
Action and Reset
Action condition
[PROT-13]
Action time
[PROT-14]
Related parameters
[PROT-12]
= 1 or 3
Reset method Automatically
Reset condition When output current < (
[PROT-13]
– 5%), the Ot2 warning 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
[PROT-13]
and
[PROT-14]
• 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]
• Adjust the V/F curve (Motor 2,
[VFD-03]
), 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 speed tracking function. Adjust the
maximum current for
[PROT-39]
speed tracking.
Warning Display Description