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

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MAINTENANCE
Troubleshooting
141
EoL1
(22)
Thermal relay 1
Electronics thermal relay 1 protection. The drive coasts to stop once it activates.
Action and Reset
Action level Start counting when output current > 105% of motor 1 rated current
Action time [PROT-17] (if the output current is larger than 105% of motor 1 rated current again within 60 sec, the counting time
reduces and is less than [PROT-17] )
Related parameters [PROT-16] and [MOTOR-17]
Reset method Manually
Reset condition Reset in 5 sec. after the fault is cleared
Recorded Yes
Possible Causes Corrective Action
• Motor shaft lock
• The load is too large
• V/F voltage is too high
• Overload during low-speed operation.
When using a general motor, even it
operates below rated current, an
overload may still occur during low-
speed operation.
• When using VFD dedicated motors,
PROT-16=0 (electronic thermal relay
selection motor 1 = inverter motor)
• Incorrect value of electronic thermal
relay PROT-17
• The maximum motor frequency is set
too low
• Torque compensation is too large
• Motor fan error
• Unbalanced three-phase impedance
of the motor
• Remove the shaft lock.
• Reduce the load and increase the motor capacity.
• Adjust settings for V/F curve, especially the setting value for the mid-point voltage (if the mid-point
voltage is set too low, the load capacity decreases at low speed).
• Decrease low-speed operation time. Replace the drive with a dedicated to VFD model. Increase the
motor capacity.
• [PROT-16] = 1 electronic thermal relay selection motor 1 = standard motor (with fan on the shaft).
• Reset to the correct motor rated current and [PROT-17]
• Reset to the correct motor rated frequency.
• Adjust the torque compensation (refer to
[MOTOR-17] ) until the current reduces and the motor does no
stall.
• Check the status of the fan, or replace the fan.
• Replace the motor.
Fault Display Description
FANL (91)
FAN PWR lost
Lost power to drive cooling fan.
Action and Reset
Action level Hardware detection
Action time Immediately
Reset method Attach fan and cycle power
Reset condition N/A
Recorded Yes
Possible Causes Corrective Action
• Fan not connected
• Broken fan wire
• Damaged fan • Check that fan connector has correctly mated with drive connection
• Check wires going to fan. If broken, replace fan
• Check fan works by power cycling the drive. If fan does not run for 5 seconds at initial turn-on, replace
fan
Fault Display Description