5-3
LED display
Description
Cause
Possible solutions
OH4
Motor
overheating
Motor overheating
The input of PTC
(Positive Temperature
Coefficient ) exceeds the
overheat protection
level.
The surrounding temperature
of motor is too high.
The input of PTC (Positive
Temperature Coefficient )
exceeds the overheat protection
level. (08-42)
Check the surrounding
temperature of motor.
Check the MT and GND
terminal wiring be correct.
OL1
Motor
overload
Internal motor overload
protection tripped,
active when protection
curve 08-05 = xxx1.
Voltage setting V/F mode
too high, resulting in
over-excitation of the motor.
Motor rated current (02-01)
set incorrectly.
Load too heavy.
Check V/f curve.
Check motor rated
current
Check and reduce motor
load, check and operation
duty cycle.
OL2
Inverter
overload
Inverter thermal
overload protection
tripped.
If an inverter overload
occurs 4 times in five
minutes, it is required to
wait 4 minutes before
resetting the fault.
Voltage setting V/F mode too
high, resulting in
over-excitation of the motor.
Inverter rating too small.
Load too heavy.
Check V/f curve.
Replace inverter with
larger rating.
Check and reduce motor
load, check and operation
duty cycle.
OT
Over torque
detection
Inverter output torque is
higher than 08-15 (over
torque detection level)
for the time specified in
08-16. Parameter 08-14
= 0 to activate.
Load too heavy.
Check over torque
detection parameters
(08-15 / 08-16).
Check and reduce motor
load, check and operation
duty cycle.
Comm. Error
No Modbus
communication received
in for the time specified
in 09-06 (communication
error detection time).
Active when 09-07(= 0
to 2).
Connection lost or wire broken.
Host stopped communicating.
Check connection
Check host computer /
software.
Summary of Contents for E510-201-SH
Page 1: ......
Page 28: ...3 14 b 200V 2HP 1 3PH 200V 3HP 20HP 400V 3HP 25HP IP20 NEMA1 ...
Page 29: ...3 15 c 200V 25HP 400V 30HP d 200V 30HP 40HP 400V 40HP 75HP ...
Page 51: ...3 37 3 5 Standard Wiring 10V AI1 AI2 AGND E P P ...
Page 72: ...4 6 4 1 4 Example of keypad operation Example 1 Modifying parameters ...
Page 74: ...4 8 4 1 5 Operation control ...
Page 206: ...4 140 Acceleration Deceleration calculation of mode 2 ...
Page 316: ...4 250 6 Timer mode 6 FLASH Timer mode 2 7 Timer mode 7 FLASH Timer mode 3 ...
Page 424: ...REVISIONS Date Manual Number Revision May 2017 4KA72X645T01 First edition ...
Page 425: ......