Quick Parameter Reference, Faults and Alarms
0-38
0
Fault/Alarm
Description
Possible Causes
A391
(10)
Current Unbalance at
Phase V B1
Phase V book 1current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
Bad electric connection between the DC bus and the
power unit.
Bad electric connection between the power unit output
and the motor.
Note:
In case of fast acceleration or braking, one of these
alarms may be indicated momentarily, disappearing after
3 seconds. This is not an indication of any anomaly in the
inverter.
If the alarm persists when the motor is operating at a constant
speed, it is an indication of an anomaly in the current
distribution among the power units.
A392
(10)
Current Unbalance at
Phase W B1
Phase W book 1current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A393
(10)
Current Unbalance at
Phase U B2
Phase U book 2 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A394
(10)
Current Unbalance at
Phase V B2
Phase V book 2 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A395
(10)
Current Unbalance at
Phase W B2
Phase W book 2 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A396
(10)
Current Unbalance at
Phase U B3
Phase U book 3 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A397
(10)
Current Unbalance at
Phase V B3
Phase V book 3 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A398
(10)
Current Unbalance at
Phase W B3
Phase W book 3 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A399
(10)
Current Unbalance at
Phase U B4
Phase U book 4 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A400
(10)
Current Unbalance at
Phase V B4
Phase V book 4 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
A401
(10)
Current Unbalance at
Phase W B4
Phase W book 4 current unbalance alarm.
It indicates a 20 % unbalance in the current
distribution between this phase and the smallest
current of the same phase in other book, only when
the current in this phase is higher than 75 % of its
nominal value.
Summary of Contents for CFW-11 Series
Page 2: ......
Page 54: ...2 4 2 General Information ...
Page 58: ...About the CFW 11 3 3 4 ...
Page 74: ...Inverter Model and Accessories Identification 5 14 6 ...
Page 86: ...Inverter Model and Accessories Identification 6 12 6 ...
Page 94: ...Available Control Types 8 2 8 ...
Page 118: ...VVW Control 10 8 10 ...
Page 182: ...Functions Common to All the Control Modes 12 26 12 ...
Page 220: ...Dynamic Braking 14 4 14 ...