Meter Calibration - Mitsubishi Electric 800 Series Instruction Manual

4.4.2

Meter calibration

1.
Outputting the same signal from terminals AM0 and AM1 (Pr.309 = "0 or 10")
START
Connect a DC voltmeter (or DC ammeter) across
terminals AM0 (or terminal AM1) and AMC.
Use Pr.323 (Pr.324) to calibrate the meter
when the voltage (current) input is 0.
Set "21" (reference voltage output) in Pr.306.
Use C1 (Pr.901) to perform adjustment, then set.
END *1
*1 In Pr.306, set the types of the signals to be output. (Refer to
NOTE
• If calibration is performed without setting Pr.306 = "21 (reference voltage output)", the terminal AM of the inverter is
calibrated. To calibrate the extended analog output, always set to "21".
• When the plug-in option used was remounted on another inverter, use Pr.323 and Pr.324 to calibrate again.
At this time, check that the polarity is correct
If the meter needle does not point to 0 when voltage or current input is 0,
use Pr.323 AM0: 0 V adjustment or Pr.324 AM1: 0 mA adjustment to
calibrate the meter
At this time, the following analog signal is actually output and deflects the meter.
<across terminals AM0-AMC>
Maximum output voltage set previously (factory setting: 10 VDC)
<across terminals AM1-AMC>
Maximum output current set previously (factory setting: 20 mADC)
Make adjustment with the setting dial or the UP/DOWN key to deflect
the meter needle to full-scale, then press the SET key to set.
page 31.)
ANALOG OUTPUT
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