Mitsubishi Electric FR-A820-00046 Instruction Manual page 569

Parameters
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)
Turning ON the power of the inverter
The monitor display turns ON.
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
parameter 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. 5-141: FM terminal calibration
FR-A800
to choose the PU operation mode. [PU] indicator turns ON.
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.
(M) Monitor display and monitor output signal
Operation
to display "
" display.
".
to enable the
" flicker alternately.
5 - 367