Zener MSC-3 User Manual

IM00120
131
IM00120
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 Description
EXTERNAL ALARM User dened trip input activated
THERMISTOR HOT The thermistor wired to the Extended Features card indicates the motor is
over heated
THERMISTOR SHORT The thermistor wired to the Extended Features card is short circuit
SUPPLY FAIL There is a problem with the input power supply. One phase is either partially
or totally missing and motor operation will be impaired
BRAKE SHORT Either an Over Current or a Ground Fault has been detected on the dynamic
brake resistor terminals
OVER TEMPERATURE The MSC-3 is too hot
EARTH FAULT An earth leakage fault has been detected on the motor terminals
I2t OVERLOAD An I2t trip has occurred
CHARGE DEFAULT A rectier failure has been detected on the mains input terminals
DC BUS LOW The DC Bus voltage has fallen below its minimum threshold
POWER FAILURE All input phases on the input power supply are either low or missing
OVER CURRENT The output current has exceeded the MSC-3's intermittent output current
rating
INV OVER TEMP One or more power devices has exceeded its thermal protection rating
RELAY OPEN The internal bus charge relay has failed to operate correctly
OVER VOLTAGE The DC Bus voltage has exceeded its maximum value
OUTPUT SHORT AN output short circuit has been detected. This is caused by either an Over
Current or a Ground Fault on the motor terminals
Run Message Description
EXT WARN User dened warning input activated
V LIMIT The motor is regenerating or the input voltage is too high
C LIMIT The motor is drawing its maximum overload current
P LIMIT The motor's absorbed power exceeds the MSC-3 rating when operating
from a single phase supply
ESO FWD The MSC-3 is operating in Essential Services Override mode with FWD
rotation
ESO REV The MSC-3 is operating in Essential Services Override mode with REV
rotation
OFF LINE The MSC-3 has not been given a terminal strip run command in line
contactor mode
NO AC! The MSC-3 has been given a terminal strip run command but has detected
no AC input voltage supply
CHARGING The MSC-3 is waiting for the DC Bus capacitors to be fully charged before
running the motor
NOT EN The MSC-3 is ON but has no enable signal so it is not able to turn a motor
IDLE REM The MSC-3 is idle in remote mode
FWD REM The MSC-3 is running in the FWD direction in remote mode
REV REM The MSC-3 is running in the REV direction in remote mode

Zener MSC-3 Specifications

General

Brand	Zener
Model	MSC-3
Category	Controller
Language	English