Section 5
Troubleshooting
5–1
MN1229
Overview
The system troubleshooting procedures involves observing the status of the
“Ready” LED, the “DB On” LED and the “Monitor” 7 segment display. The
tables in this section provide information related to the indications provided by
these devices.
Note: The “Ready” LED can display either RED or GREEN color.
Table 5–1 Operating Mode Indications
Ready Monitor Status Cause
OFF OFF Control Disabled
No Fault.
Green Decimal
Point
Control Enabled
Normal operating mode. No
Fault.
Red 1
Over-voltage fault (DC Bus)
Missing or wrong REGEN
resistor.
Input voltage too high.
Red 3
Over-current fault.
(More than 2X peak current)
Motor leads shorted or control
failure.
Red 4
Over or Under-voltage fault.
Internal 15VDC supply fault.
Red 5
Resolver fault.
Resolver or cable short circuit or
not plugged in.
Red 6
Electronic fusing
(also see fault 7)
Control or motor current
over-load detected by software.
Red 7 I
2
t limit reached. After a fault is
detected, control will run at
nominal output current for 2.5
seconds then stop. The Monitor
will
display “6” fault.
Motor Over-Temperature
Control Over-Temperature
Cycle time between Acceleration
and Deceleration is too short.
Motor overloaded.
Control should be relocated to
cooler area. Add fans or air
conditioning to control cabinet.
Red 9
EEPROM fault.
Reset control.
Section 5
Troubleshooting
Ready
Monitor Status
Cause
OFF OFF Control Disabled No Fault.
Green Decimal
Control Enabled Normal operating mode. No
Point Fault.
Red
1 Over-voltage fault (DC Bus) Missing or wrong REGEN
resistor.
Input voltage too high.
Red 3
Over-current fault.
(More than 2X peak current)
Motor leads shorted or control
failure.
Red
4 Over or Under-voltage fault. Internal 15VDC supply fault.
Red 5
Resolver fault. Resolver or cable short circuit or
not plugged in.
Red 6
Electronic fusing
(also see fault 7)
Control or motor current
over-load detected by software.
Red
7 12t limit reached. After a fault is
detected, control will run at
Cycle time between Acceleration
and Deceleration is too short.
Overview
The system troubleshooting procedures involves observing the status of the
"Ready" LED, the "DB On" LED and the "Monitor" 7 segment display. The
tables in this section provide information related to the indications provided by
these devices.
Note: The "Ready" LED can display either RED or GREEN color.
Table 5-1 Operating Mode Indications
nominal output current for 2.5
seconds then stop. The Monitor
will display "6" fault.
Motor Over-Temperature
Control Over-Temperature
Red 9 EEPROM fault.
Motor overloaded.
Control should be relocated to
cooler area. Add fans or air
conditioning to control cabinet.
Reset control.
MN1229 5-1
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