Parker 590 series, Product Manual

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7-4
Trips and Fault Finding
590 Series DC Digital Converter
Trip Message and Meaning Possible Reason for Trip
PHASE LOCK
Supply frequency is outside the
frequency band limits 45 - 65Hz
Check supply frequency
Synchronisation errors caused by distorted supply
5703 RCV ERROR
Invalid data received via P3 port from
another Converter
(Alarm only operates when MODE parameter is set to
5703 SLAVE)
STALL TRIP
With motor stationary (AT ZERO SPEED
parameter shows TRUE), current has
exceeded the STALL THRESHOLD
parameter value for longer than the
STALL TRIP DELAY parameter value
(Alarm only operates when the STALL TRIP parameter
is enabled).
OVER I TRIP
Current feedback value has exceeded
280% of rated current
(300% loading not exceeding 15ms or 325% not
exceeding 6.6ms is acceptable)
Motor armature windings failure - check insulation
resistance.
Badly tuned current loop
Faulty Converter - refer to Parker SSD Drives
ACCTS FAILED
AC current transformer plug connection
to Converter power board missing
Check armature current transformer plug for correct
installation.
Note: The trip prevents the contactor closing
and the current loop activating without
armature current feedback - important
in the case of external stack controllers
where the thyristor stack is remote from
the control board.
AUTOTUNE ERROR
Speed feedback has exceeded 20% of
rated speed, or current field feedback
has exceeded 6% of rated field current
(Alarm only operates during the Autotune sequence).
AUTOTUNE ABORT
The Autotune sequence has been
aborted.
Coast Stop, Program Stop, Enable or Start Run
terminal(s) disabled during Autotune sequence
The AUTOTUNE parameter reset during the Autotune
sequence
Autotune sequence has timed-out (approximately 2
minutes).
Table 7-1 Trip Messages
Symbolic Alarm Messages
These are generally internal software or hardware. If these should occur please investigate, or
contact Parker SSD Drives Technical Support.
Number Description Action
0xF003 Pre-Ready Fault Coding not present. Replace power
board or chassis. (If an external stack,
check coding supply field).
0xFF03 Aux Power Fail Check Aux. Supply and/or Mains Input