Magnetek IMPULSE G+ 4 Series User Manual

IMPULSE
®
•G+ & VG+ Series 4 Technical Manual
November 2020
Page 207
UL1
Upper Limit 1 Err
Upper Limit 1—SLOW DOWN Indicator. Upper
Limit 1—SLOW DOWN switch status is changed.
1. May not require corrective
action.
2. Check the limit switches
location.
3. Check the limit switches
condition.
X
UL2
Upper Limit 2 Err
Upper Limit 2—STOP Indicator.
Upper Limit 2—STOP switch status is changed.
1. May not require corrective
action.
2. Check the limit switches
location.
3. Check the limit switches
condition.
X
UL3
Upper Limit 3 Err
Upper Limit 3—Weighted Stop.
Upper Limit weighted limit switch tripped.
1. May not require corrective
action.
2. Check the position of the Limit
Switch.
3. Check the condition of the
Limit Switch.
4. Check the conditions of/for
terminal H01-xx (U01-10).
XX
UT1
Undertorque Det 1
Undertorque Detection 1. The current is less
than L06-02 for more than L06-03.
Alarm or fault defined by L06-01.
1. Check settings.
2. Check motor coupling.
XX
UT2
Undertorque Det 2
Undertorque Detection 2. The current is less
than L06-05 for more than L06-06.
Alarm or fault defined by L06-04.
1. Check settings.
2. Check motor coupling.
XX
UV
DC Bus Undervolt
Undervoltage Fault. Undervoltage status occurs
for more than 2 sec during STOP.
1. Check the power source
wiring.
2. Replace any bad branch fuses.
3. Check collector system.
X
UV1
DC Bus Undervolt
Undervoltage 1 Fault. Undervoltage status
occurs for more than 2 sec during RUN
command.
1. Check power supply wiring.
2. Correct the line voltage.
3. Check collector system.
X
UV2
CTL PS Undervolt
Undervoltage 2 Fault. The VFD detected a loss
of the 24V logic power supply voltage.
1. Check power supply wiring.
2. Correct the line voltage.
3. Check collector system.
X
UV3
MC Answerback
MC Fault. The pre-charge contactor opened
during operation.
1. Check power supply wiring.
2. Correct the line voltage.
3. Check collector system.
4. Wait 30-45 seconds before
restarting VFD after auto shut
down.
X
Code Fault/Alarm Description Corrective Action Fault Alarm

Magnetek IMPULSE G+ 4 Series Specifications

General

Brand	Magnetek
Model	IMPULSE G+ 4 Series
Category	DC Drives
Language	English