116 ADV200 • Quick start up guide
22 Speed fbk loss
Condition: Speed feedback loss alarm.
The encoder is not connected, not connected properly or not powered: verify encoder operation
by selecting the PAR 260 Motor speed parameter in the MONITOR menu.
Solution:
- Check encoder wiring for integrity.
- Check that the encoder is connected to the power supply.
- With the drive disabled, turn the motor clockwise (seen from the motor shaft side). A positive
value must be displayed.
- If the value does not change or values are indicated randomly, check the encoder power supply
and cables.
- If the value displayed is negative, invert the encoder connections. Change channel A+ and A- or
B+ and B-.
- Check that the encoder electronics are consistent with those of the relative expansion card.
- Generated in case of an encoder fault. Each type of encoder generates a “Loss of feedback”
alarm differently. See parameter 2172 SpdFbkLoss code for information about the cause of the
alarm and chapter D.1 Speed fbk loss alarm.
23 Overspeed
Condition: Motor overspeed alarm. The motor speed exceeds the limits set in the PAR 4540
Overspeed threshold parameter.
Solution:
- Limit the speed reference.
- Check that the motor is not driven in overspeed during rotation.
24 Speed ref loss
Condition: Speed reference loss alarm
Occurs if the difference between the speed regulator reference and the actual motor speed is
more than 100 rpm. This condition occurs because the drive is in the current limit condition. It is
only available in the Flux Vect OL and Flux Vect OC mode.
Solution:
- Check the drive load conditions
- Check the number of encoder impulses
25 Emg stop alarm
Condition: Emergency stop alarm.
The Stop key on the keypad was pressed with the PAR 1008 Stop key mode parameter set to
EmgStop&Alarm.
Active in remote control mode (PAR 1012=1) both by using “Terminals” command or “Digital”
commands and, in local control mode (PAR 1012=0) by using “Terminals” command.
Solution:
Eliminate the reason for which the Stop key on the keypad was pressed and reset the drive.
26 Power down Condition: The drive was enabled with no supply voltage at the power section.
Solution: Check drive power supply.
27 ExtIO fault Condition: Communication fault with the external module.
Solution: See paragraph “8.1.2 “ExtIO fault” Alarm”, page 126
28 FastLink fault Condition: FastLink communication fault
Solution: See paragraph “8.1.3 “FastLink” Alarm”, page 127
29 Brake fault Condition: Incorrect setting of brake control function parameters.
Solution: See menu 22.13 - FUNCTIONS/BRAKE CONTROL
30 Motor pre OT
Condition: Motor overtemperature prealarm. % value of threshold compared to PAR 4532
MotorOT thr,
Solution:
- Value set too low for duty cycle
- Heavy duty cycle
31 Mot phase loss
Condition: Output phase loss.
Solution: Check Drive/motor connection.
32 Condensation
Condition: High condensation level inside the drive. Operating conditions (combination of ambi-
ent temperature, humidity and cooling liquid temperature) are not safe,
Solution: Safe conditions are obtained when the work point is under the respective curve
indicated in the graph of chapter 22.18 - FUNCTIONS/LC CONTROL . Otherwise, you have to take
adequate precautions to lower the ambient temperature and/or the relative humidity or to raise
the cooling liquid temperature.
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