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Reducing Drive Overheating Pre-Alarm Warning Levels
The Drive detects the temperature of the cooling fins using the thermistor, and protects the Drive from over-
heating. You can receive Drive overheating pre-alarms in units of 10
The following overheating pre-alarm warnings are available: Stopping the Drive as error protection, and con-
tinuing operation, with the alarm OH (Radiation fins overheating) on the Digital Operator flashing.
Related Parameters
Parameter
Number
Overheat Alarm
Level
L8-02
OH Pre-Alarm
Lvl
Overheat
Pre-Alarm
Operation
L8-03
Selection
OH Pre-Alarm
Sel
* Factory settings will vary based on drive capacity.
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6
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Name
Description
Display
When the cooling fin temperature
exceeds the value set in this
parameter, an Overheat Alarm
(OH) will occur.
Selects the Drive operation upon
an OH pre-alarm detection.
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
°
C.
Change
Setting
Factory
during
Range
Setting
V/f
Operation
50
95 °C*
to
No
A
130
0 to 3
3
No
A
Control Methods
Open
Open
V/f
Loop
Flux
Loop
with
Vector
Vector
Vector
PG
1
2
A
A
A
A
A
A
A
A
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Troubleshooting
