aerauliqa MHS, Manual

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20
ALARM 1
VALUE
ALARM 2
VALUE
ALARM DESCRIPTION
POSSIBLE CAUSE
TROUBLESHOOTING
0 0 No error -
1 0 Memory error – motor parameters lost Contact manufacturer/technical support
2 0
Short circuit – electronics power
module damaged
Board damaged – replace board
3 0
Motor synchronization lost – wrong motor parameters
or electronics damaged
Check motor windings.
If motor windings OK (all 3 windings have same resistance),
replace board.
If motor windings damaged (open/short circuit), replace motor.
4 32
Over voltage: supply voltage above 565Vac (DC bus
voltage over 800V) during motor running
Check power supply voltage
check power supply wiring
4 33
Under voltage: supply voltage below 212Vac (DC bus
voltage below 300V) during motor running
Check power supply voltage
check power supply wiring
4 113
Electronics temperature over 85°C
(check input register 15)
Check if operating temperature is above rated maximum operating
temperature.
Check mechanical load for anomalies (e.g. difficult turning)
4 114
Motor windings temperature over 125°C
(check input register 16)
Check if operating temperature is above rated maximum operating
temperature.
Check mechanical load for anomalies (e.g. difficult turning)
11.3 Alarm codes/LED status/Troubleshooting
For additional information on HVLS Modbus control, contact the manufacturer/technical support.
10. CLEANING
Before any maintenance/cleaning operation assure to comply with the precautions written in the dedicated paragraph of the
“Installation, operation and maintenance general manual” supplied with the fan.
The unit (IP55) can be washed with water jets. In this case it is recommended to drill a hole under the plastic hub 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
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)