Continued from previous page
Probable fault cause on
installation
Probable fault cause in
operation
- Magnet turned the wrong way
- Magnet transmitter incorrectly connected (wrong polarity),
see CONNECTIONS on page 9
- Too big a gap between magnet transmitter and magnet, max. 15 mm
- Broken belt
- Belt slipping
- Stuck wheel
- The magnet transmitter or magnet is not intact
Motor temperature
Alarms and trips if the coil temperature in the motor is too high.
The thermal contact in the motor returns to normal mode once the
temperature falls.
Over-voltage
Alarms and trips if the input voltage exceeds 265 V.
Under-voltage
Alarms and trips if the input voltage falls below 190 V.
Over/under temperature
Alarms and trips if the temperature in the control unit goes above/below
safe temperature level (+85 - -30
O
C).
Short circuit
Probable fault cause
Alarms and trips in the event of short circuit phase-phase or phase-earth.
- Short circuit between phases in cable or motor
- Short circuit between phase-earth in cable or motor
- Interruption to one phase in cable or motor
Measure motor resistance; it should be identical on all coils.
Internal fault
Alarms and trips if an internal fault in the control system has occurred.
ADJUSTMENTS VIA POTENTIOMETER
Manual speed
By closing A1-A2 the speed is controlled via the potentiometer marked
"Manual speed". Can be regulated between 1 and 350 rpm.
The wheel rotates at the set speed, whatever the value of the input signal.
Factory setting: 1 rpm on motor shaft.
Max. speed
Potentiometer for adjusting max. speed.
Regulates between 50 and 350 rpm.
Factory setting: 50 rpm on motor shaft.
PUSH BUTTON
Reset
Reset button for resetting the control unit. The control unit is also reset in
the event of voltage drop-out and closure between terminal 11 and 12.
9
8
