4 Errors / Faults
4.1 Status Indicator
Several monitoring and protection functions are
used to establish whether the equipment is opera-
ting correctly. The status of the equipment is exter-
nalised in two ways:
•
visually by means of 4 LED’s on the front panel
of the equipment
•
electrically via the standby outputs. In this way
the current status of the power drive is reported
to the superordinate control unit (e.g. PLC).
The table indicates the possible statuses of the
equipment and the respective consequences for the
equipment outputs. The following section contains
notes on how to rectify faults quickly.
CAUTION
Depending on the type of fault there
will be no current at the motor output.
The stopping torque of the motor then
falls to zero.
Signalling by LED’s Meaning Effect, action
LED 01
(Undervoltage)
The supply voltage is
more than 30% below its
nominal value (230 V AC)
Power stage is switched
off immediately, the
undervoltage fault
message is not stored.
READY inactive (min.
100 ms), motor outputs
inactive
LED 02
(Phase monitoring)
Interruption of one or
more motor wires
Interruption in a motor
coil
Motor has no current.
Reset the equipment or
turn off supply voltage.
READY and the motor
outputs inactive
LED 03
(Short-circuit)
Short-circuit between
one or more motor
phases or between one
or more motor phases
and earth
Power stage is switched
off immediately. Reset
the equipment or turn off
supply voltage (at least 1
min.). READY and the
motor outputs inactive
LED 04
(Excessive temperature)
The permissible
temperature of the
equipment is exceeded.
Power stage is switched
off immediately. Reset
the equipment or turn off
supply voltage (at least 1
min.). READY and the
motor outputs inactive
LED 01 und 02
(Reset)
ENABLE is not present Motor has no current.
READY and the motor
outputs inactive
The equipment is reset by deactivation of ENABLE (Enabling command).
Errors / Faults
WS5-5 Doc. no. 211.347/DGB 12.92 4 – 1
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