Cooling Fan Operation Selection - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series
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NOTE
• When using terminal 2 for PTC thermistor input (Pr.561 ≠ "9999"), the terminal 2 does not operate as an analog frequency
command terminal. The PID and dancer control functions assigned to the terminal 2 is also disabled. Use Pr.133 PID action
set point to set the set point for the PID function.
• To input power to the PTC thermistor power supply, always use the terminal 10 and do not use any other terminals or an
external power supply. Otherwise, the PTC thermistor protection (E.PTC) does not operate properly.
• When E.PTC is activated, the alarm display, "External protection (AU terminal)", may appear on the parameter unit (FRPU07),
but it is not a fault.
 Overheat protection to match the characteristic of the motor (Pr.600 to
Pr.604, Pr.692 to Pr.696)
• The activation level of the electronic thermal O/L relay can be varied to match the motor temperature characteristic.
• The electronic thermal O/L relay operation level can be set with the combination of three points (Pr.600, Pr.601), (Pr.602,
Pr.603), (Pr.604, Pr.9). Two or more points are required for setting.
• The electronic thermal O/L relay operation level can be set with the combination of three points (Pr.692, Pr.693), (Pr.694,
Pr.695), (Pr.696, Pr.51) when the RT signal is ON.
Continuous operation characteristic
Load ratio (ratio to Pr.9 (Pr.51)) [%]
100%
Pr.603
(Pr.695)
Pr.601
(Pr.693)
Pr.600
Pr.602
(Pr.692)
(Pr.694)
Setting
Load ratio
example 1
Pr.9=100% of the rated
motor current
Pr.600=6Hz
Pr.601=50%
Pr.602=30Hz
Pr.603=70%
Pr.604=60Hz
• When setting Pr.600, Pr.602, Pr.604 (Pr.692, Pr.694, Pr.696) to the same frequency, the following graph's upper level is
applied.
Load ratio [%]
100
80
50
10
Outout frequency[Hz]
NOTE
• Make sure to set the parameters according to the temperature characteristic of the motor used.
Parameters referred to
Pr.71 Applied
motorpage 362
Pr.72 PWM frequency
selectionpage 207
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.196 (Output terminal function
5.7.2

Cooling fan operation selection

A cooling fan is built into the inverter and its operation can be controlled.
258
5. PARAMETERS
5.7 (H) Protective function parameter
Pr.604
Output frequency
(Pr.696)
100%
70%
50%
6Hz
30Hz
60Hz
Pr.600 = 10Hz
Pr.601 = 80%
Pr.602 = 10Hz
Pr.603 = 50%
Pr.604 = 10Hz
selection)page 355
selection)page 312
Load ratio
Setting
example 2
100%
Pr.600=120Hz
Pr.601=60%
60%
Pr.602=3Hz
50%
Pr.603=50%
Pr.604=60Hz
Frequency
3Hz
60Hz
120Hz
Frequency

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