WEG CFW-11M RB, Руководство пользователя

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6
CFW-11M RB |6-7
Troubleshooting and Maintenance
Fault/Alarm Description Possible Causes
A404:
Current Unbalance at
Phase W B5 Phase W book 5 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.
;
Bad electric connection between the DC bus
and the power unit.
; Bad electric connection between the power unit
output and the power supply.
Note: In case of fast acceleration or braking, this
alarm may be indicated momentarily, disappearing
after a few seconds. This is not an indication of
any anomaly in the converter. If this 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.
F408:
Refrigeration System Fault Indications related to P0832 and P0833 parameters
settings.
;
DIM 1 input function.
;
DIM 2 input function.
;
Electrical connection failure between the digital
input and the sensor.
;
Failure of the corrensponding sensor.
;
Failure of the device whose sensor is monitoring.
F410:
External Fault
Obs.:
(1)
In case of the faults F030 (U Arm Fault), F034 (V Arm Fault) and F038 (W Arm Fault), the indication of which book has caused the fault is done by IPS1
board LEDs. The indication is done is done via LEDs that remain on when the failure occurs. When a RESET is performed the LEDs are switched off, going on
again if the fault persists (see Figure 6.1).
Figure 6.1 -
Power unit arm fault (desaturation) indication LEDs
6.3 SOLUTIONS FOR THE MOST FREQUENT PROBLEMS
Table 6.2 -
Solutions for the most frequent problems
Problem Point to be Verified Corrective Action
DC Bus Bar does not reach
the value set in P0151 Incorrect wiring connection 1. Check all power and control connections. For instance, the digital inputs
set to start/stop, general enable, or no external fault shall be connected to
the 24 Vdc or to DGND* terminals (refer to figure 3.52).
Incorrect settings 1. Check if parameters are properly set for the application.
Fault 1. Check if the converter is not blocked due to a fault condition.
2. Check if terminals XC1:13 and XC1:11 are not shorted (short-circuit at the
24 Vdc power supply).
Off display Keypad connections 1. Check the external keypad connections.
Open power supply fuse(s) 1. Replace fuses.
24 Vdc power supply voltage 1. Check if the 24 Vds control voltage is proper connected and turned on.
6.4 INFORMATION FOR CONTACTING TECHNICAL SUPPORT
NOTE!
For technical support and servicing, it is important to have the following information in hand:
;
Converter model.
;
Serial number, manufacturing date, and hardware revision that are listed in the product nameplate
(refer to item 2.5).
;
Installed software version (check parameter P0023).
;
Application data and converter settings.