16
ALARM 1
VALUE
ALARM 2
VALUE
LED BLINKS
(single blink
approx. duration)
ALARM DESCRIPTION
POSSIBLE CAUSE
TROUBLESHOOTING
0
0
1 Blink/2sec
(1s)
No error
-
1
0
1 Blink/s
(0.5s)
Memory error – motor parameters lost
Contact manufacturer/technical support
2
0
2 Blink/s
(0.25s)
Short circuit – electronics power
module damaged
Board damaged – Contact manufacturer/technical support
3
0
3 Blink/s
(0.17s)
Motor synchronization lost – wrong motor
parameters or electronics damaged
Check motor windings.
If motor windings OK (all 3 windings have same
resistance), contact manufacturer/technical support.
If motor windings damaged (open/short circuit), replace
motor
4
1
5 Blink/s
(0.1s)
Supply voltage out of range 135Vac÷550Vac
(DC bus voltage 190÷780V) only with motor
still - not running
Check power supply voltage / check
power supply wiring
4
32
5 Blink/s
Supply voltage above 565Vac (DC bus
voltage over 800V) during motor running
(instantaneous value)
Check power supply voltage / check
power supply wiring
4
33
5 Blink/s
Supply voltage below 107Vac (DC bus
voltage below 150V) during motor running
(instantaneous value)
Check power supply voltage / check
power supply wiring
4
34
5 Blink/s
“Restart on the fly” failed
The drive couldn’t catch the impeller – power cycle/retry
4
49
4 Blink/s
(0.13s)
U phase voltage missing/disconnected
(or wrong motor parameters)
Check power supply/wiring. If wiring OK, contact
manufacturer/technical support
4
50
4 Blink/s
V phase voltage missing/disconnected
(or wrong motor parameters)
Check power supply/wiring. If wiring OK, contact
manufacturer/technical support
4
51
4 Blink/s
W phase voltage missing/disconnected
(or wrong motor parameters)
Check power supply/wiring. If wiring OK, contact
manufacturer/technical support
4
113
6 Blink/s
(0.08s)
Electronics temperature over 85°C
Check if operating temperature is above rated maximum
operating temperature.
Check mechanical load for anomalies (e.g. difficult turning)
4
114
7 Blink/s
(0.07s)
Motor windings temperature over 125°C
Check if operating temperature is above rated maximum
operating temperature.
Check mechanical load for anomalies (e.g. difficult turning)
4
115
no Blink
Short circuit on Pt100 motor temperature
probe
Check temperature probe wiring – detects temperature
probe manumission
10.3 Alarm codes/LED status/Troubleshooting
For additional information on HVLS ModBus control, contact the manufacturer/technical support.
Содержание QHS Series
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