Emerson Fisher D4 Instruction Manual page 15

Instruction Manual
D104188X012
Figure 13.
7. If the Close and Open values are as expected, press Confirm to accept these values. If not, press Cancel to restart
the process.
Note
The value of the 4-20mA signal must have at least 4mA difference between the close and open signals. A differential less than
that amount will cause the actuator to reject the calibration and use the previous values.
Should the entered values vary more than 10% from the expected 4-20mA values; the actuator will accept the calibration and a
Notification displaying "Questionable Analog Calibration" will result.
Figure 14.
Calibration with the use of Modbus
1. After the unit has been properly wired and fused per instructions in the Wiring section of this instruction manual,
turn power to the unit on.
2. Calibrate using Modbus:
a. Send position command of 0% to actuator to prevent unexpected motion. Valve will move to commanded
position following the calibration procedure.
D4 Valve with Gen 2 easy-Drive Actuator
February 2021
15