Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 516 / 1218

(H) Protective function parameter Parameters
5 - 314
5.10.3 Cooling fan operation selection
A cooling fan is built into the inverter and its operation can be controlled.
Cooling fan always ON (Pr. 244 = "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 = "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 heatsink. 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").
Cooling fan operation command signal (Y206 signal)
●
The cooling fan operation command signal (Y206 signal) can be output when the inverter cooling
fan meets the conditions for running. The function can be used when the fan installed on the
enclosure is synchronized with the inverter cooling fan.
●
Y206 signal indicates the operating command condition of the inverter cooling fan depending
on the power supply ON/OFF or the Pr. 244 settings. The signal does not indicate the actual
operation of the cooling fan. (The signal is output even if the cooling fan is stopped due to a fault.)
●
To use the Y206 signal, set "206 (positive logic) or 306 (negative logic)" in one of Pr. 190 to Pr. 196
(output terminal function selection) to assign function to an output terminal.
Pr. Name
Initial
value
Setting
range
Description
244
H100
Cooling fan operation
selection
1
0
A cooling fan operates at power ON.
Cooling fan ON/OFF control is invalid.
(The cooling fan is always ON at power ON)
1
Cooling fan ON/OFF control is valid.
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 valid.
Set the cooling fan stop waiting time within 1 to 5 s.
NOTES The cooling fan is installed on the FR-A820-00105(1.5K) or higher and FR-A840-00083(2.2K) or
higher.
Changing the terminal assignment using Pr. 190 to Pr. 196 (output terminal function selection)
may affect the other functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr. 190 to Pr. 196 (output terminal function selection) => page 5-378