Exhausto EXact2 VEX240 series, Основные инструкции

Страница: 66 / 108

Frequency converter 2
Unit
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy z
02 01 4 One or more phases
between frequency
converter and motor
is/are short-circuited to
earth ● Check the cable between frequency converter 2 and motor
02 02 4 Max. motor current
from frequency con-
verter exceeds limit by
300% ● Check for low voltage to frequency converter 2
02 03 4 Frequency converter
DC circuit max. voltage
exceeds limit ● Check for overvoltage to frequency converter 2
02 04 2 Frequency converter
DC circuit voltage too
low when motor(s)
start(s) ● Check for low voltage to frequency converter 2
02 05 4 Frequency converter
DC circuit voltage too
low when VEX unit
stops ● Check for low voltage to frequency converter 2
02 06 4 Frequency converter
power supply has lost
a phase ● Check wiring from the power supply connection to the isolation
switch in the VEX unit
● Check cable connections from the isolation switch to frequen-
cy converter 2
02 07 4 Frequency converter
power supply to mo-
tor(s) has lost a phase ● Check the cable between frequency converter 2 and motor
● Check for a short circuit in the motor windings
02 08 4 Frequency converter
overheated (based on
internal calculations) ● Check if the temperature at frequency converter 2 exceeded
the permitted 35°C when the alarm was tripped. If the temper-
ature has been too high, the unit will restart when the air tem-
perature falls below 35°C.
02 10 4 Frequency converter
cooling coil overheated ● Check if the temperature at frequency converter 2 exceeded
the permitted 35°C when the alarm was tripped. If the temper-
ature has been too high, the unit will restart when the air tem-
perature falls below 35°C.
02 11 4 Frequency converter
motor(s) drawing too
much current Fault on frequency converter 2.
02 12 4 Frequency converter
motor 1 overheated ● Check the motor impeller can turn freely
● Check that the fan impeller is not blocked
02 13 4 Frequency converter
motor 2 overheated ● Check the motor impeller can turn freely
● Check that the fan impeller is not blocked
02 14 4 No modbus communi-
cation to frequency
converter ● Check the cable between the connection board and frequency
converter 2.
3005167-2022-02-02
Alarms
66/108