Nicotra DDMP Series User Manual

27
Rev. 2 – 10
th
November2015
Alarm Handling
Monitoring:
The alarms can be monitored by:
a) Modbus Registers
b) LED blinking (see blinking legend)
c) ON/OFF output (alternative to TACHOMETRIC output. To be configured through parameter 46 in
Holding Register). The output is in ON state (5V Voltage OUT) if an alarm occurs and in OFF state
(0V Voltage OUT) during normal operations.
The alarm terminal is NOT a dry contact or relays contact.
Driver actions:
When an alarm occurs the Driver can have these two possible actions:
1) AUTO-RESTART = the Driver tries to restart for 10 times. If the error is still present the Driver stops.
To restart the fan, once the problem is corrected, it is necessary to power the Driver OFF for 5
minutes and then power the Driver ON
2) BLOCKING= the Driver stops immediately. To restart the fan, once the problem is corrected, it is
necessary to power the Driver OFF for 5 minutes and then power the Driver ON
Modbus Registers and alarm description:
In table 5 are indicated the possible alarms and the values stored in the related Modbus input register 10
and 17.
Alarm
REG 10
Alarm
REG 17 Description
Actions
0
0
Normal operation, no errors
NO ACTIONS
1
0
Memory error
BLOCKING
2
0
Short-circuit
B
LOCKING
3
0
Loss of synchronism with the motor
AUTO
-
RESTART
4
1
Input voltage outside range (only with motor stopped)
AUTO
-
RESTART
4
32
Bus voltage over 430V during operation (instantaneous measurement)
AUTO
-
RESTART
4
33
Bus voltage below 350V during operation (instantaneous measurement)
AUTO
-
RESTART
4
34
Input relay not closed
AUTO
-
RESTART
4
49
Motor cable U disconnected
BLOCKING
4
50
Motor cable V disconnected
BLOCKING
4
51
Motor cable W disconnected
BLOCKING
4
113
Overtemperature
AUTO
-
RESTART
Table 5 – Alarm description and related Modbus addresses
An occurring alarm with NO ACTIONS could imply a dangerous functioning anyway.
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

Nicotra DDMP Series Specifications

General

Brand	Nicotra
Model	DDMP Series
Category	Fan
Language	English