Display Messages - Zener MSC-3 Instruction Manual

Display Messages

The MSC-3 displays a variety of messages on the second line of its display to indicate the drive status.
These messages may be divided into two types, trip messages and run messages.
The MSC-3 will protect itself a variety of fault conditions. When one of these conditions is experienced
the MSC-3 will trip, shut down the motor and display one of the following messages. the message will
be displayed until the fault is cleared and a rest signal is applied.
Trip Message
EXTERNAL ALARM
THERMISTOR HOT
THERMISTOR SHORT
SUPPLY FAIL
BRAKE SHORT
OVER TEMPERATURE
EARTH FAULT
I2t OVERLOAD
CHARGE DEFAULT
DC BUS LOW
POWER FAILURE
OVER CURRENT
INV OVER TEMP
RELAY OPEN
OVER VOLTAGE
OUTPUT SHORT
Run Message
EXT WARN
V LIMIT
C LIMIT
P LIMIT
ESO FWD
ESO REV
OFF LINE
NO AC!
CHARGING
NOT EN
IDLE REM
FWD REM
REV REM
Description
User defined trip input activated
The thermistor wired to the Extended Features card indicates the motor is
over heated
The thermistor wired to the Extended Features card is short circuit
There is a problem with the input power supply. One phase is either partially
or totally missing and motor operation will be impaired
Either an Over Current or a Ground Fault has been detected on the dynamic
brake resistor terminals
The MSC-3 is too hot
An earth leakage fault has been detected on the motor terminals
An I2t trip has occurred
A rectifier failure has been detected on the mains input terminals
The DC Bus voltage has fallen below its minimum threshold
All input phases on the input power supply are either low or missing
The output current has exceeded the MSC-3's intermittent output current
rating
One or more power devices has exceeded its thermal protection rating
The internal bus charge relay has failed to operate correctly
The DC Bus voltage has exceeded its maximum value
AN output short circuit has been detected. This is caused by either an Over
Current or a Ground Fault on the motor terminals
Description
User defined warning input activated
The motor is regenerating or the input voltage is too high
The motor is drawing its maximum overload current
The motor's absorbed power exceeds the MSC-3 rating when operating
from a single phase supply
The MSC-3 is operating in Essential Services Override mode with FWD
rotation
The MSC-3 is operating in Essential Services Override mode with REV
rotation
The MSC-3 has not been given a terminal strip run command in line
contactor mode
The MSC-3 has been given a terminal strip run command but has detected
no AC input voltage supply
The MSC-3 is waiting for the DC Bus capacitors to be fully charged before
running the motor
The MSC-3 is ON but has no enable signal so it is not able to turn a motor
The MSC-3 is idle in remote mode
The MSC-3 is running in the FWD direction in remote mode
The MSC-3 is running in the REV direction in remote mode
IM00120 IM00120
MSC-3 Instruction Manual
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