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