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5. PARAMETERS
5.7 (H) Protective function parameter
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4
5
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7
8
9
10
5.7.2 Cooling fan operation selection
A cooling fan is built into the inverter and its operation can be controlled.
Cooling fan always ON (Pr.244 (P.H100) = "0")
• When Pr.244 = "0", the cooling fan operates at power ON. If the fan stops at this time, fan operation is regarded as faulty,
Fan alarm [FN] is displayed on the operation panel, and the fan fault (FAN) and alarm (LF) signals are output.
• For the terminal used for the FAN signal output, set "25 (positive logic)" or "125 (negative logic)" in any of Pr.190 to Pr.196
(Output terminal function selection). For the LF signal, set "98 (positive logic)" or "198 (negative logic)".
Cooling fan operation control (Pr.244 (P.H100) = "1" (initial value), "101
to 105")
• The cooling fan operation is controlled when Pr.244 = "1". When the inverter is running, the cooling fan operates; and when
it is stopped, the cooling fan operates according to the temperature of the inverter heat sink. If the fan stops although it
meets the conditions for running, fan operation is regarded as faulty, [FN] is displayed on the operation panel, and the fan
signal and LF signals are output.
• To prevent the cooling fan from turning ON and OFF repeatedly during frequent starts/stops (inching), the cooling fan stop
waiting time can be set. The waiting time when Pr.244 = "101 to 105" is Pr.244-100 (or 1 s, if the Pr.244 = "101").
Pr. Name Initial
value
Setting
range
Description
244 Cooling fan operation
selection
1 0 Cooling fan ON/OFF control is disabled. (The cooling fan is always
ON at power ON)
The cooling fan operates at power ON.
1 Cooling fan ON/OFF control is enabled.
The fan is always ON while the inverter is running. During a stop, the
inverter status is monitored and the fan switches ON/OFF according
to the temperature.
101 to 105 Cooling fan ON/OFF control is enabled.
Set the cooling fan stop waiting time within 1 to 5 seconds.
1000 Cooling fan ON/OFF control is disabled.
(The cooling fan is always ON at power ON)
The cooling fan operates at power ON.
The cooling fan can
be set to always OFF
during PM motor test
operation.
1001 Cooling fan ON/OFF control is enabled.
The fan is always ON while the inverter is
running. During a stop, the inverter status is
monitored and the fan switches ON/OFF
according to the temperature.
1101 to 1105 Cooling fan ON/OFF control is enabled.
Set the cooling fan stop waiting time within 1
to 5 seconds.
H100 Cooling fan operation
selection
1 0 Cooling fan ON/OFF control is disabled. (The cooling fan is always
ON at power ON)
The cooling fan operates at power ON.
1 Cooling fan ON/OFF control is enabled.
The fan is always ON while the inverter is running. During a stop, the
inverter status is monitored and the fan switches ON/OFF according
to the temperature.
101 to 105 Cooling fan ON/OFF control is enabled.
Set the cooling fan stop waiting time within 1 to 5 seconds.
H106 Cooling fan operation
selection during the test
operation
0 0 The cooling fan operates according to the H100 setting during PM
motor test operation.
1 The cooling fan can be set to always OFF during PM motor test
operation.
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