Mitsubishi Electric FR-A500 Instruction Manual page 152

<Set point input calibration>
1. Apply the input voltage of 0% set point setting (e.g. 0V) to across terminals 2-5.
2. Make calibration using Pr. 902. At this time, enter the frequency (e.g. 0Hz) which should be output by the
inverter at the deviation of 0%.
3. Apply the voltage of 100% set point setting (e.g. 5V) to across terminals 2-5.
4. Make calibration using Pr. 903. At this time, enter the frequency (e.g. 60Hz) which should be output by the
inverter at the deviation of 100%.
<Detector output calibration>
1. Apply the output current of 0% detector setting (e.g. 4mA) to across terminals 4-5.
2. Make calibration using Pr. 904.
3. Apply the output current of 100% detector setting (e.g. 20mA) to across terminals 4-5.
4. Make calibration using Pr. 905.
Note: The frequencies set in Pr. 904 and Pr. 905 should be the same as set in Pr. 902 and Pr. 903.
The results of the above calibration are as shown below:
[Set point setting]
(%)
100
0
0
Note: 1. If the multi-speed (RH, RM, RL signal) or jog operation (JOG) signal is entered with the X14
signal on, PID control is stopped and multi-speed or jog operation is started.
2. When "20" or "21" is set in Pr. 128, note that the input across inverter terminals 1-5 is added to
the set point across terminals 2-5.
3. When "5" (programmed operation mode) is selected for Pr. 79, PID control operation cannot be
performed. In this setting, programmed operation is performed.
4. If the setting is as follows, PID control becomes invalid.
Pr.22="9999" (analog variable)
Pr.79="6" (switchover mode)
Pr.95="1" (online auto tuning)
5. When the terminal functions are changed using Pr. 180 to Pr. 186 and/or Pr. 190 to Pr. 195, the
other functions may be affected. Confirm the functions of the corresponding terminals before
making settings.
6. When PID control is selected, the minimum frequency is the frequency set in Pr. 902 and the
maximum frequency is the frequency set in Pr. 903.
(The Pr. 1 "maximum frequency" and Pr. 2 "minimum frequency" settings are also valid.)
[Detection value]
(%)
100
0
5 (V) 0 4
Manipulated
variable (Hz)
60
0
20 (mA) 0
143
PARAMETERS
[Manipulated variable]
100 Deviation (%)
4