Mitsubishi Electric 800 Series Instruction Manual (Function page 325

NOTE
• When outputting an item such as the output current, which cannot reach a 100% value easily by operation, set Pr.54 to "21"
(reference voltage output) and calibrate. A pulse train of 1440 pulses/s are output via terminal FM.
• When Pr.310 Analog meter voltage output selection = "21", the output via terminal AM cannot be calibrated. For details of
Pr.310, refer to the FR-A8AY E kit Instruction Manual.
• The wiring length to terminal FM should be 200 m at maximum.
• The initial value of the calibration parameter C0 (Pr.900) is set to 1 mA full-scale and 1440 pulses/s terminal FM pulse train
output at 60 Hz. The maximum pulse train output of terminal FM is 2400 pulses/s.
• When connecting a frequency meter between terminals FM and SD and monitoring the output frequency, it is necessary to
change Pr.55 to the maximum frequency, since the FM terminal output will be saturated at the initial value when the maximum
frequency reaches 100 Hz or greater.
 Calibration procedure for terminal FM when using the operation panel
Operating procedure
1.
Turning ON the power of the inverter
The operation panel is in the monitor mode.
2.
Changing the operation mode
Press the PU/EXT key to choose the PU operation mode. The PU LED turns ON.
Calibration is also possible in the External operation mode.
3.
Selecting the parameter setting mode
Press the MODE key to choose the parameter setting mode. (The parameter number read previously appears.)
4.
Calibration parameter selection
Turn the setting dial until "C..." appears. Press the SET key to display "C---".
5.
Selecting a parameter
Turn the setting dial until "C0" (C0 (Pr.900) FM terminal calibration) appears. Press the SET key to enable the
parameter setting.
The monitored value of the item (initially the output frequency) selected by Pr.54 FM terminal function selection
will appear.
6.
Pulse output via terminal FM
If stopped, press the RUN key to start the inverter operation. (To monitor the output frequency, motor connection is
not required.)
When a monitor that does not require inverter operation is set in Pr.54, calibration is also possible during a stop
status.
7.
Scale adjustment
Turn the setting dial to move the meter needle to a desired position.
8.
Setting completed
Press the SET key to confirm the setting. The monitor indicator blinks.
• Turn the setting dial to read another parameter.
• Press the SET key to return to the "C---" display.
• Press the SET key twice to show the next parameter.
NOTE
• Calibration can also be made for External operation. Set the frequency in the External operation mode, and make calibration
in the above procedure.
• Calibration can be performed during operation.
324
13. (M) Item and Output Signal for Monitoring
13.4 Adjustment of terminal FM and terminal AM