Emerson Fisher easy-Drive 200R Instruction Manual page 14

easy-Drive 200R
November 2023
Span Calibration
It will be necessary to perform a span calibration. A span calibration is accomplished by the following method:
Note
If the actuator is equipped with a RPU-100, the RPU-100 must be disabled via the Disable switch prior to powering off the actuator.
1. Ensure the process and valve are in a safe state – the valve may move during this operation.
2. Press the "CALIBRATE SPAN" button to initiate the span calibration. The software will show a progress bar during
the calibration and display "Valve Span Calibrated" when complete.
Note
Should actual travel not equal the expected travel you will receive a span calibration failure alert. See figure 13. Ensure valve type is
selected correctly. It may be necessary to re-couple the valve actuator assembly.
Figure 13. Fisher easy-Drive Configuration Software
Span Calibration without the use of Modbus
1. Turn power to the actuator off.
2. Wait for 10 seconds to ensure all circuits have discharged.
3. Return power to the actuator and use the appropriate calibration method for your control signal. Calibration
sequence must be done within 15 seconds of power being switched on.
4. For positioning operation using direct acting 4-20 mA:
a. Apply a fully closed signal between pins 4-20 mA - and 4-20 mA +. If Span is currently uncalibrated, valve ball/disk
will not move at this time.
b. Apply a fully open signal between pins 4-20 mA - and 4-20 mA +. If Span is currently uncalibrated, valve ball/disk
will not move at this time.
c. Apply a fully closed signal between pins 4-20 mA - and 4-20 mA + – valve ball/disk will move its fully opened
position, followed by moving to its closed position.
d. If calibration of the analog input is desired to improve positional accuracy, an optional operation is listed in the
next section titled Analog Input Calibration.
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Instruction Manual
D104742X012