MN715J
Troubleshooting 5-7
Table 5-2 Troubleshooting
Continued
INDICATION
POSSIBLE
CAUSE
CORRECTIVE ACTION
External Trip
Motor ventilation
insufficient.
Clean motor air intake and exhaust.
Check external blower for operation.
Verify motor’s internal fan is coupled securely.
Motor draws
excessive
current.
Check motor for overloading.
Verify proper sizing of control and motor.
Volts/Hertz ratio is
wrong.
Adjust the Volts/Hz parameter value.
Adjust the Base Frequency.
Adjust the Max Output Voltage.
No thermostat
connected.
Connect thermostat.
Verify connection of all external trip circuits used with
thermostat.
Disable thermostat input at control.
Poor thermostat
connections.
Check thermostat connections.
External trip
parameter
incorrect.
Verify connection of external trip circuit at J4-17.
Set external trip
parameter to “OFF” if no connection made at
J4-17.
HW Surge
Current
High output
current condition
detected (greater
than 250% of
rated output
current).
Turn power OFF then ON (cycle power).
If error occurred while ramping motor, check motor, coupling and
load.
Increase Accel time.
Increase/Decrease torque boost value.
Press “RESET” key on keypad. If fault remains, contact Baldor.
Motor Will
Not Start
Not enough
starting torque.
Increase Current Limit setting.
Not Start
Motor overloaded. Check for proper motor loading.
Check couplings for binding.
Verify proper sizing of control and motor.
Control not in
local mode of
operation.
Place control in local mode.
Motor may be
commanded to
run below
minimum
frequency setting.
Increase speed command or lower minimum frequency setting.
Incorrect
Command Select
parameter.
Change Command Select parameter to match wiring at J4.
Incorrect
frequency
command.
Verify control is receiving proper command signal at J4.
CUR LIM
Timeout
Peak output
current exceeded
PK CURRENT
LIMIT.
Check PK Current Limit parameter in the Level 2 Output Limits
block.
Check motor for overloading.
Increase ACCEL/DECEL times.
Reduce motor load.
Verify proper sizing of control and motor.
Summary of Contents for ID15J101-ER
Page 1: ...Series 15J Inverter Control 7 04 MN715J Installation and Operating Manual ...
Page 5: ...iv Table of Contents MN715J ...
Page 11: ...2 4 General Information MN715J ...
Page 59: ...4 22 Programming and Operation MN715J ...
Page 75: ...6 6 Specifications and Product Data MN715J ...
Page 79: ...A 4 Dynamic Brake Hardware MN715J ...
Page 86: ...Appendix C Remote Keypad Mounting Template MN715J Remote Keypad Mounting Template C 1 ...