Rev. 0 - 05/11/2020
OPERATING MANUAL
OPERATING MANUAL
EN
EN
50/52
The system status can be displayed through the LED on the driver plate (see par. 9.6).
In the following figure on the right the blinking LED is shown.
18.3 Blinking LED - Alarm description
18. ALARM HANDLING
When a malfunctioning occurs, the driver has two possible behaviors depending on the cause of the alarm:
BLOCKING
The cause of the alarm is very dangerous -> The driver stops immediately. To restart the fan, once the
problem has been corrected, it is necessary to reset the fan or power the driver off for 5 minutes.
AUTO-RESTARTING
The cause of the alarm is contingent to a wrong setting or wrong working condition. The alarm indica
-
tions are activated, but after some seconds the fan tries to restart automatically.
The alarms can be monitored through three different ways:
•
Modbus Registers
•
Blinking LED
•
Digital Output
18.1 Monitoring
In the following table, the alarms and the values stored in the related Modbus
Input Register 10
and
Input Register 17
are indicated.
18.2 Modbus registers - Alarm description
Alarm 1 Alarm 2
Description
Actions
Type
0
0
Default operation – No Errors
No Actions
ALARM 1
1
0
Memory error
Blocking condition
ALARM 2
2
0
Short Circuit
Blocking condition
ALARM 3
3
0
Loss of synchronism
Auto-restarting condition
ALARM 4
4
1
Input Voltage outside range (only with motor stopped)
Auto-restarting condition
ALARM 4
4
32
BUS overvoltage (instantaneous measurement)
Auto-restarting condition
ALARM 4
4
33
BUS undervoltage (instantaneous measurement)
Auto-restarting condition
ALARM 4
4
34
Input relay not closed
Auto-restarting condition
ALARM 4
4
49
Missing phase – U cable disconnected
Blocking condition
ALARM 4
4
50
Missing phase – V cable disconnected
Blocking condition
ALARM 4
4
51
Missing phase – W cable disconnected
Blocking condition
ALARM 4
4
52
High starting current
Auto-restarting condition
ALARM 4
4
113
Overtemperature
Auto-restarting condition
ALARM 4
4
255
Loss of communication
Blocking condition
ALARM 4
The Driver is NOT protected against a very high-power supply voltage.
A very low power supply voltage during the motor running could damage Driver.
WARNING
WARNING
1 sec.