Analog Input Calibration Method - Fuji Electric FSJ Instruction Manual

Analog input calibration method

Description
● Perform calibration so that the analog signal (4-20 mA DC) input is 0% at 4 mA and 100% at 20 mA.
● Connect the current generator to the AI terminal as shown in the figure below so that calibration corresponds to 4 mA and 20 mA in
current input adjustment mode.
● Analog input destination: AI: Between terminal blocks (15-16)
● The analog input is calibrated at the factory.
● If calibration is interrupted, the calibration value may be lost. If interrupted, redo the calibration from the beginning.
For actual keying, refer to the typical operation indicated below. Set the protection to OFF beforehand. (See Section 4.4.1.)
Operation Adjust the 4mA and 20mA analog inputs.
(example)
Key operation
Press the
▼
Press the
ENT
▼
Press the
▼
Press the
ENT
▼ Next, output 4 mA from the current generator and wait for the output to
stabilize.
Press the
ENT
▼
――― 4 mA Calibration Result Registration Complete ―――
Press the
▼
Press the
ENT
▼ Next, output 20 mA from the current generator and wait for the output to
stabilize.
Press the
ENT
▼
――― 20 mA Calibration Result Registration Complete ―――
Press the
ESC
measurement mode.
Description
key for 4 times to display "MAINTENANCE MODE".
key once to display "RAS".
ENT
key for 6 times to display "AI CURRENT".
key twice to enter 4 mA calibration mode.
ENT
key once to register the calibration result.
ENT
key once to select 20 mA.
key once to enter 20 mA calibration mode.
ENT
key once to register the calibration result.
ENT
key twice and then press the
ESC
key once to enter the
－83－
Display
MAINTENANCE MODE
RAS 0000H
0000000000000000
AI CURRENT
CALIBRATION
AI CALIBRATION
AI CALIBRATION
 COMPLETE 
↓
AI CALIBRATION
AI CALIBRATION
AI CALIBRATION
AI CALIBRATION
 COMPLETE 
↓
AI CALIBRATION
0.000 %
0.000 m3
4mA
4mA
20mA
20mA
20mA