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5. PARAMETERS
5.8 (M) Monitor display and monitor output signal
5.8.4 Adjustment of terminal CA and terminal AM
By using the operation panel or the parameter unit, terminals CA and AM can be adjusted (calibrated) to the full scale.
Terminal CA calibration (Pr.900, Pr.930 to Pr.931)
• Terminal CA is initially set to provide a 20 mADC output in the full-scale state of the corresponding monitor item. Pr.900
allows the output current ratio (gains) to be adjusted according to the meter scale. Note that the maximum output current
is 20 mADC.
• Set a value at the minimum current output in the calibration parameters Pr.930. Calibration parameter Pr.931 are used to
set a value at the maximum current output.
• Set the output signal values (output monitor set with Pr.54) at zero and at the maximum current output from the terminal
CA (using calibration parameters Pr.930 and Pr.931. The full scale for each monitor is 100% at this time.
• Set the output current values (output monitor set with Pr.54) at zero and at the maximum current output from the terminal
CA (using calibration parameters Pr.930 and Pr.931. The output current calibrated by calibration parameter Pr.900 is
100% at this time.
Pr. Name Initial value Setting range Description
900
M310
CA terminal calibration ―― Calibrates the scale of the meter
connected to terminal CA.
901
M320
AM terminal calibration ―― Calibrates the scale of the analog meter
connected to terminal AM.
930
M330
Current output bypass signal 0% 0 to 100% Set the signal value at the minimum
analog current output.
930
M331
Current output bypass current 0% 0 to 100% Set the current value at the minimum
analog current output.
931
M332
Current output gain signal 100% 0 to 100% Sets the signal value when the analog
current output is at maximum.
931
M333
Current output gain current 100% 0 to 100% Set the current value at the maximum
analog current output.
867
M321
AM output filter 0.01 s 0 to 5 s Set the terminal AM output filter.
869
M334
Current output filter 0.01 s 0 to 5 s Set the terminal CA output filter.
(ammeter)
0 to 20 mADC
CA
5
(+) (-)
Analog output current
(CA)
20mA
0
Output signal value
Output signal value
for minimum analog output
(Pr.931)
Output signal value
for zero analog current output
(Pr.930)
Analog current output value for zero output signal
(Pr.930)
Analog current
output value for
maximum
output signal
(Pr.931)
Pr.900
100%
(initial setting)
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