Specifications

5-2 Troubleshooting MN715P
Fault Code Descriptions
Five failure conditions are indicated by LED’s on the front panel. Carefully
examine all LED’s (Power, Fault, FWD, REV and Stop) to determine the
cause of the fault condition. Press Stop to reset the control.
1. Non Resettable hardware faults (Power LED is blinking)
(HW Surge Current, HW Protect, Power Module faults)
Power LED
Fault LED Description
Blinking 1 Blink Hardware fault is detected. High output
current, or control board power supply failure.
a. Check wiring to ensure a ground fault is not present.
b. Make sure the load is not excessive.
2. Overload faults
(2 second or 60 second overload faults)
To indicate that the drive is in an overcurrent condition, but has not tripped,
the FWD or REV LED will blink two times per second.
If the drive goes to 0% Overload left, the drive will fault and then start
counting back up to 100%. During this counting up, the drive is not
resettable. During this “count–up” condition, the fault LED and the STOP
LED’s will blink. This is the only condition in which both LED’s will be
blinking. When the drive reaches 100% Overload left, the fault LED will
continue to blink, however, the STOP LED will remain continuously ON.
FWD or
REV LED
Fault LED Description
Blinking 2 Blinks Peak current has exceeded its 2 or 60 second
rated limits or continuous current limit exceeded.
STOP LED Fault LED Description
Blinking 2 Blinks The remaining % Overload has been exceeded.
A timer begins and all drive operations are
suspended until 100% Overload capacity is
regained.
Press Stop to reset the control. If error remains, try these steps to correct the
fault. (You may have to wait for the % Overload timer to expire).
a. Verify proper sizing of control and motor.
b. If error occurred while ramping motor, check motor, coupling and load.
c. Increase ACCEL time (P1).
d. Increase/Decrease Torque Boost value (P2).