Troubleshooting - Eliwell EWCFW-08 User Manual

6.2 TROUBLESHOOTING

PROBLEM
Motor does not run Incorrect wiring
Analog reference
(if used)
Incorrect Programming 1.Check if the parameters are properly programmed for the
Fault
Motor Stall
Motor speed varies Loose connections
(oscillates)
Defective speed
potentiometer
Variation of the external 1.Identify the cause of the variation
analog reference
CHAPTER 6 - DIAGNOSTICS AND TROUBLESHOOTING
references" at P120 has been enabled), the occurred fault
number, the status of the integrator of the IxT function
(overcurrent).
E24: indicates the fault code on the LED display.
E31: inverter proceeds to operate normally, but it does not
accept the keypad commands; the fault code is indicated
on the LED display.
E41: does not allow inverter operation (it is not possible to
enable the inverter); the fault code is indicated on the LED
display and on the "ERROR" LED.
Indication on the Inverter Status LEDs:
POINT TO BE
CHECKED
1.Check the power and the control connections. For example,
the digital inputs DIx programmed for Start/Stop or General Enable
or No External Fault must be connected to GND (pin 5 of the
control connector XC1)
1.Check if the external signal is properly connected
2.Check the status of the speed potentiometer (if used)
application
1.Check if the inverter has not been disabled due to detected fault
condition (refer to item 6.1)
1.Reduce the motor load
2.Increase P169 or P136/P137
1.Disable the inverter, switch OFF the power supply and tighten all
connections
1.Replace the defective speed potentiometer
Table 6.3 - Solution for the most frequent problems
Power
Error LED
LED
Inverter is powered up and is ready
On Off
A fault has been detected
The Error LED flashes, indicating
the number of the fault code
Example: E04
On (Flashing)
Table 6.2 - Meaning of LEDs indication for drive status
CORRECTIVE ACTION
Description
0.2 s 0.6 s
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