What to doCauseFault / Aux.
code aux code
visible only on
assistant con-
trol panel and
drive com-
poser))
Code
(hex)
Check input power line fuses and
there is no input power supply im-
balance.
Intermediate circuit DC
voltage is oscillating due
to missing input power
line phase or blown fuse.
Input phase loss3130
Check input power connections.Incorrect input power and
motor cable connection.
Wiring or earth
fault
3181
Check overvoltage control is on,
supply voltage matches the nominal
input voltage of the drive. Check
supply line for static or transient
overvoltage, brake chopper, brake
resistor and deceleration time. Use
coast-to-stop function (if applic-
able).
Excessive intermediate
circuit DC voltage.
DC link over-
voltage
3210
Check supply cabling, fuses and
switchgear.
Intermediate circuit DC
voltage is not sufficient.
DC link under-
voltage
3220
Check the auxiliary code (format
XXXY YYZZ). “XXX” specifies the
source of the first error (see “YYY”).
“YYY” specifies the module through
which BCU control unit channel the
fault was received (1: Channel 1, 2:
Channel 2, 4: Channel 3, 8: Channel
4, …, 800: Channel 12).
Difference in DC voltages
between parallel-connec-
ted inverter modules.
BU DC link differ-
ence
3291
156 Diagnostics
EN
HI
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