19
EXTENSION ANALOG OUTPUT
4
4.5.2 Calibration of meter
(1) Outputting the same select signals from terminals AM0 and AM1
(
Pr. 309
= "0 or 10")
CAUTION
• If calibration is made without "21" (reference voltage output) set in
Pr. 306
, terminals FM/AM*
of the inverter
are calibrated. To calibrate the extension analog output, always set "21" in
Pr. 306
.
(* Terminals provided differ according to the inverter.)
• When the plug-in option used was remounted on other inverter, use
Pr. 323
and
Pr. 324
to calibrate again.
At this time, check that the polarity is correct
press to set.
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: 10VDC)
<
across terminals AM1-AMC
>
Maximum output current set previously (factory setting: 20mADC)
If the meter needle does not point to 0 when voltage or current input is 0,
use
Pr. 323
AM0 0V adjustment or
Pr. 324
AM1 0mA adjustment to
calibrate the meter
START
Run the inverter
Use
Pr. 901
to perform adjustment, then set.
END
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
.
In
Pr. 306
, set the types of the signals to be output.
The inverter may be run in either the PU or external operation mode.
(Refer to page 21.)
