Zener MSC-3 User Manual

IM00120
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IM00120
MSC-3 Start Up
MSC-3 Trouble Shooting Guide
Symptom Cause Remedy
Front Display does not
illuminate.
Input power wiring not
connected properly.
Input voltage not within
specication.
Check input power wiring, refer to the
MSC-3 Electrical Installation Diagram.
Measure the input voltage at the MSC-3
input terminals. Check with specications.
Motor does not rotate
when UP button on the
Console is pressed.
Enable signal is not active. Check that the EN terminal is connected to
+5V. Check that the ENABLED message is
displayed.
MSC-3 is in REMOTE Check that if you have a remote terminal it is
not at +5V with respect to DIG COM.
Speed is set to minimum Increase speed by holding down the UP
button.
Motor does not rotate
when remote START
signal is activated.
Incorrect control signal
wiring.
Check control wiring to terminals and
the terminal functions assigned. Refer
to Control Wiring Diagrams and Terminal
Congurations.
Enable signal is not active. Check that the EN terminal is connected to
+5V. Check that the ENABLED message is
displayed.
MSC-3 is in LOCAL Check that your remote terminal is at +5V
with respect to DIG COM.
A direction has not been
selected.
Check that either a FWD or a REV terminal
has been assigned and that it is at +5V with
respect to DIG COM.
If the reverse direction is selected ensure that
reverse is enabled from the Protection menu.
Speed signal is not correctly
connected.
Check the REMOTE speed source in the
References menu. Ensure that this source is
not at zero.
Motor does not
accelerate in the time
set by the ACCEL ramp
and C LIMIT message
appears .
Current limit circuit is
operating.
This is a normal operating mode for the
MSC-3. When the load is being accelerated
too fast, the MSC-3 limits current drawn
by the motor by extending the acceleration
ramp time. A faster Accel time is not possible
with this Current Limit setting. Increase the
ACCEL time until the C LIMIT message
disappears
CURRENT LIM set too low. Increase CURRENT LIM value so that the
MSC-3 is not prematurely limiting current.
Check that the motor does not overheat with
the new setting.
C LIMIT message
appears continuously
Motor mechanically
overloaded.
Check the actual load is within the motor’s
capacity at the required speed.
Motor shaft jammed.
Fault in motor or motor
wiring.
Incorrect motor voltage
selected.
Check the mechanical drive system.
Check that motor is wired correctly.
Enter correct MOTOR VOLTAGE from the
MOTOR menu
Incorrect motor frequency
selected.
FLUX PLUS is set too high.
Enter correct MOTOR FREQUENCY from the
MOTOR menu.
Reduce the FLUX PLUS setting.

Zener MSC-3 Specifications

General

Brand	Zener
Model	MSC-3
Category	Controller
Language	English