Chapter 7: FINDING AND ELIMINATING FAULTS
Operating Manual FU3AM-03
Page 27 of 30
7. Finding and eliminating faults
7.1 Resetting faults
♦
Control voltages ON/OFF
♦
Pos. edge on control input “Reset fault
7.2 Possible causes of faults
A number of possible causes of faults are listed in the table below.
Fault
Possible cause
Remedy
Display off
Mains voltage absent
Check voltage
Display indicates 0
Mains voltage too low
Check voltage
Display indicates fault code
See section. 5.2
See section. 5.2
Motor not running, even
though display indicates 2
(clockwise) or 3 (anti-
clockwise)
Set point too low
Specify set point
Wiring fault
Check wiring (esp. motor
phases)
U-0 to low (at low speeds)
Correct U-0
Drive controller oscillates
(speed controller mode)
Controller set incorrectly
Optimise KPn, Kin and t-n-
Act. if necessary
Motor runs out of true
EMC
Link reference earth of analogue
and digital inputs respectively
Screening of analogue and digi-
tal inputs, large-area earthing of
sensor signals and motor cable
If you return the unit for testing or repair, please provide the following information:
♦
type of fault
♦
accompanying circumstances
♦
suspected cause of the fault
♦
unusual preceding events
