GE Industrial Solutions AF-300 P11 - Manual (Page 104)

7-3
Data subject to change without notice 7/07. © 2007 GE Drives
(6) Overheating internally and overheating
of heat sink
(7) External thermal relay tripped
(8) Drive overload and motor overload
Overheating at
heatsink OH1
Over temperature at
inside air OH3
Check the temperature of the
heatsink using the alarm
information displayed on the
keypad panel.
Does the heatsink
temperature indicate
50
°
C or lower?
Is the ambient
temperature -10
°
C or
lower?
Is the load excessive? Reduce the load.
Is the cooling fan
rotating?
Replace the cooling fan.
Is the cooling air
passage blocked?
Is the ambient
temperature within the
specification?
Arrange peripheral
conditions to meet the
specification.
Remove obstacles.
YES
Faulty drive or error
due to noise, etc.
Contact GE Drive.
YES
YES
NO
NO
NO
NO
NO
YES
YES
External thermal relay tripped
OH2
Is PTC MODE
H26 enabled?
Is PTC operating?
Incorrect motor load or
inadequate cooling.
Check the motor side.
Set to correct value.
Change to regular
external circuit.
Is PTC level H27 set
correctly?
Is the external circuit
(including constants
regular?
Faulty drive or error
due to noise, etc.
Contact GE Drive.
Is data input to the control
terminals THR-X1 to X9?
Are alarm signals from
external equipment input to
the terminals and the CM?
Connect the alarm
signal contact.
Is the alarm function of
the external equipment
operating correctly?
Faulty drive or error
due to noise, etc.
Contact GE Drive.
Remove the cause
of alarm function
activation.
Drive overload
OLU
Motor overload
OL1, OL2
Do the characteristics of the
electronic thermal O/L relay
and motor overload match?
Connect a thermal O/L
relay externally.
Is the electronic thermal O/L
relay setting correct?
Set to the correct level.
Faulty drive or error
due to noise, etc.
Contact GE Drive.
Is the load excessive?
Reduce the load or
increase drive capacity.
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
YES
IIncrease ambient
temperature
YES
NO