Troubleshooting - Unitek Classic Q1 Series Manual

Troubleshooting

6 Troubleshooting
6.1 Troubleshooting
Switch on mains supply
Voltages present
X10: 15, 16
X5: 14, 17, 18
yes
All LEDs dark
no
LED3 dark
LED 6 bright
no
Enable active
yes
LED1 dark
LED2 dark
no
LED 3 dark
no
Preset low command value ±
Motor runs at high speed
no
LED4 or LED5 continuously bright
no
Increase command value
Motor is running
no
Armature current is flowing
no
No function
Device must be checked at the
manufacturer's
Classic Q1
no
Check the back-up fuses and the
contactor circuit
Fuses F1 and F2 defective
yes
Mains supply unit defective
Internal short-circuit
Check the tacho connection/tacho
yes
Correct configuration for armature
voltage control?
yes
Check the enable voltage
X1:4 > 10V
Check the power connection, the
yes
fuses, and the rotating field
yes
Wrong tacho polarity
Tacho voltage short-circuited
Check the internal or external
yes
current limiting
-Armature circuit open
-Measure the field current
- Check the phase position of the
auxiliary voltage and the power
voltage
yes Drive overload
Mechanics are blocked
Motor defective
23