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Instruction Manual

D104161X012

D3 Valve with Gen 2 easy-Drive Actuator

February 2021

4. If the valve does not respond as expected, proceed to Troubleshooting guide on page 18.

5. Check conduit ports.

D Conduit seal must be in place within 450mm (18 inches) of the enclosure.

D Unused conduit ports must be sealed with an explosionproof port plug.

6. Replace the cover and tighten all 8 bolts to 20 Nm (15 ftlbs).

Troubleshooting

1. uint does not move.

a. Verify that 12VDC to 24VDC is present on the power terminals as shown on the cover. Green heartbeat LED will

pulse near Modbus terminals when power is present.

b. Verify that all wires are firmly attached on both ends.

c. Verify that wires are connected to the correct terminals - see Wiring in the manual.

d. Verify mode of operation (on/off or positioning) matches control signal.

e. Verify mode of control (local or Modbus) matches control signal.

2. uint does not respond to 420mA signal

a. Verify that 12VDC to 24VDC is present on the power terminals as shown on the cover.

b. Verify that the 420mA signal is wired correctly and that the terminals are firmly on the wires.

c. Verify mode of operation matches control signal (local control: 40067=0, positioning: 40065=1).

d. Check the value of the analog input in register 40026 to determine if it is 0 or greater.

i. If register 40026 shows 0, the 4-20mA may be wired backwards. Swap wire and attempt again.

3. Diagnostics show a Motor Stall Fault.

a. The easyDrive electric actuator is designed to operate in a manner consistent with a pneumatic actuator. This

means that if the valve plug can not move to its commanded position, the actuator will stop, without damage,

and issue a Motor Stall Fault warning. When the command signal changes outside of the deadband (Modbus

section of this manual.

4. Position on D3 is not accurate (proportional positioning uints only).

a. If the position of a D3 is too high (i.e. 50% is much higher than 50% on the bonnet), check the valve type. If valve

type is D4, change to D3, cycle power, and recalibrate.

b. If the local analog input is being used (420mA or 15V), the analog inputs of the actuator may be calibrated to

match the input signal.

i. Command 0% (4mA or 1V).

ii. Using a Modbus link, send a 1 to register 40004 or use the Fisher easyDrive configuration software by clicking

the button “Analog Cal at 0%”.

Emerson Fisher D3 User Manual

Questions and Answers: