Calibration Of The Indicator (Pr.838, Pr.857, C0) - Mitsubishi Electric 800 Series Instruction Manual

4.3.2

Calibration of the indicator (Pr.838, Pr.857, C0)

Refer to the following flow chart to calibrate the indicator.
Start
Connect the indicator across terminals DA1
and terminal 5.
Use Pr.857 to make calibration of indicator
at 0 voltage.
Set "21" (reference voltage output) in Pr.838.
Use C0(Pr.900) to make adjustment, then set.
Use Pr.838 to set the types
End
of the signals to be monitored.
NOTE
• If calibration is performed without setting "21" (reference voltage output) in Pr.838, terminal FM of the inverter is calibrated.
• When FR-A8AZ is remounted on other inverter, use Pr.857 and C0 (Pr.900) of the inverter with the option to calibrate again.
• When FR-A8AZ and FR-A8AY are used together with "1 or 11" set in Pr.309 Analog output signal voltage/current
switchover and "21" set in Pr.310 Analog meter voltage output selection, C0 (Pr.900) calibrates terminal AM0 of the FR-
A8AY. (Pr.309 and Pr.310 are parameters for FR-A8AY. Refer to the Instruction Manual of the FR-A8AY for details of Pr.309
and Pr.310.)
24
BIPOLAR ANALOG OUTPUT
At this time, check that the polarity is correct. Terminal DA1 is plus.
If the indicator needle does not point to 0 when voltage output is 0,
adjust the setting value of Pr.857 DA1 0V adjustment in between 900%
and 1100%.
Setting "21" in Pr.838 outputs 10 VDC to deflect the indicator needle.
Turn to adjust the indicator needle to deflect to full-scale,
then press to set.