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Troubleshooting 8-3MN792
Table 8-3
Trip LAST ALARM only
14 Autotune error F 0 0 1
14 Autotune aborted F 0 0 2
14 External trip F 0 0 5
14 Remote trip F 0 0 6
14 CONFIG Enabled F 2 0 0
14 No OP–Station F 4 0 0
14 PCB Version F F 0 5
14 Product code F F 0 6
When more than one trip is to be represented at the same time then the trip codes are simply added together to
form the value displayed. Within each digit, values between 10 and 15 are displayed as letters A to F shown in
Table 8-1.
For example, if the Health Word parameter = 01A8, this represents a “1” in digit 3, an “8” and a “2” in digit 2,
(8+2 = 10, displayed as A) and an 8 in digit 1. This in turn represents the active trips Field Failed, Encoder
Failed, Over Volts (VA) and Heatsink Trip (unlikely).
Power Board LED Trip Information (Frame 4 and 5)
The Heatsink Trip, 3 Phase Failed and ACCTS Failed trips are associated with the following LED indications:
Frame 4
Check the power board LEDs for more Heatsink Trip information. The LEDs are on to indicate a problem.
FLD HS OT
ARM HS OT
PHASE LOSS
field heatsink overtemperature
armature heatsink overtemperature
phase loss
HEATSINK TRIP
3 PHASE FAILED
Trips
Frame 5
The master power board (on the left hand side of the unit) is fitted with a Parallel Expansion Board. This board
has four additional LEDs providing information about the slave power board (on the right hand side of the unit),
and about the general status of the unit.
FLD HS OT
ARM HS OT
PHASE LOSS
field heatsink overtemperature
armature heatsink overtemperature
phase loss
HEATSINK TRIP
3 PHASE FAILED
Trips
ARM HS OT
PHASE LOSS
PH ROT FLT
CUR IMBALANCE
Master Power Board Slave Power Board
phase rotation fault
current imbalance
ACCTS FAILED
(indicated by the
MASTER SLAVE
It is essential that the phase sequence applied
to the two stacks are identical otherwise the
converter will trip on 3 PHASE FAILED.
If there is a current imbalance between the
stacks which exceeds 10% the converter will
trip on ACCTS FAILED.
Parallel Expansion Board)