20
ALARM 1
VALUE
ALARM 2
VALUE
LED BLINKS
(single blink
approx. duration)
ALARM DESCRIPTION
POSSIBLE CAUSE
TROUBLESHOOTING
0
0
1 Blink/2s
(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
11.3 Alarm codes/LED status/Troubleshooting
For additional information on HVLS Modbus control, contact the manufacturer/technical support.
11.2 Modbus Registers - Input Register
These registers are READ-ONLY, and can be read using the function
04 READ INPUT REGISTERS.
Register
Address
Description
Dimension
(Word)
Data
Type
U.M. (data on
the register)
Example
Register value
→
Real value
3
Measured speed
1
ushort
0.1rpm
490
→
49rpm
10
Alarm 1
1
ushort
-
See table (§ 11.3)
17
Alarm 2
1
ushort
-
See table (§ 11.3)
10. CLEANING
The unit (IP65) can be washed with water jets. In this case it is recommended to drill a hole under the plastic cover for water drainage.
11. TROUBLESHOOTING (Modbus)
11.1 Connection parameters
Protocol
MODBUS/RTU over RS485
Baud Rate (bps)
9600
Data bits
8
Parity bits
none
Stop bits
2
HVLS Slave Address
1