Mitsubishi Electric FR-A820-00046 Instruction Manual page 530

(M) Monitor display and monitor output signal
NOTES When outputting such an item as the output current, which cannot reach a 100% value easily by
operation, set Pr. 54 to "21" (reference voltage output) and calibrate. 1440 pulses/s are output
from the terminal FM.
When Pr. 310 "Analog meter voltage output selection" = "21", the terminal FM calibration cannot
be performed. For the details of Pr. 310, refer to the Instruction Manual of FR-A8AY.
The wiring length of the 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-SD and monitoring the running fre-
quency, 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 with the calibration parameter C0 (Pr. 900) cannot be done when Pr. 291 "Pulse train I/O
selection" = "10, 11, 20, 21, 100" (high-speed pulse train output).
Calibration procedure for terminal FM when using the operation panel (FR-DU08)
Screen at power-ON
The monitor display appears.
Changing the operation mode
Press
Calibration is also possible in the External operation mode.
Parameter setting mode
Press
Calibration parameter selection
Turn
Selecting the parameter number
Turn
setting. The monitored value of the item (initially the output frequency) selected by Pr. 54 FM/CA terminal function
selection will appear.
Pulse output via terminal FM
If stopped, press
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.
Scale adjustment
Turn
Setting completed
Press
Turn
Press
Press
Tab. 5-137: FM terminal calibration
5 - 350
to choose the PU operation mode. [PU] indicator is lit.
to choose the parameter setting mode. (The parameter number read previously appears.)
until appears. Press
until (C0 (Pr. 900) FM/CA terminal calibration) appears. Press
or to start the inverter operation. (To monitor the output frequency, motor
to move the meter needle to a desired position.
to enter the setting. The monitored value and
to read another parameter.
to return to the
twice to show the next parameter.
Operation
to display
display.
Parameters
.
to enable the parameter
flicker alternately.