TECNOMOTOR TM 514 Manual De Instrucoes página 64

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Faults and possible causes
Protection
description and
fault display
Phase loss or
Undercurrent
E03
(LED Phase Loss)
Flashing
TM 514 – COMMON RAIL TEST
Activation
description
At starting: It occurs
when there is no
voltage in the power
supply terminals
(R/1L1, S/3L2 and
T/5L3) or when the
motor is disconnected.
With the motor running:
It trips when the current
stays below the
programmed value
longer than the
programmed time.
Referring to the
nominal motor current.
When the parameters
are set with the factory
default values, then this
protection trips after
elapsing 1 second with
phase loss either at the
input or at the output
(motor). It trips when
the current circulating
through the SSW-07 is
less than 20 % of the
value adjusted at the
Motor Current trimpot.
158
Probable causes
In hydraulic pump
applications, it may be
running with no load.
Phase loss in the
three-phase network.
Short-circuit or fault at
the thyristor or By-
pass.
Motor not connected.
Motor connection is
incorrect
Loose contact in the
connections.
Starting problems with
the input contactor.
Input fuses are blown.
Incorrect
programming of the
Motor Current trimpot.
Motor current
consumption lower
than required for
phase loss protection
to work.
Reset
Power-on.
Reset key.
Auto-reset.
DIx.