Emerson Fisher D4

Instruction Manual
D103597X012
D4 Valve with easy-Drive Actuator
October 2017
15
1. Before turning on power to the unit, be sure that a closed signal is being commanded to the unit
D DryContact: contact is open
D L2e (Dual Dry Contact): Contact closed across pins 1 & 3
D Analog Input: signal < 4mA or 1V
D Modbus: position demand = 0
2. Turn on power to the unit
3. Apply a change in position demand to ensure unit responds properly
D DryContact:
D Closed contact between pins 1 & 2 will open the valve
D Dual contact / L2e only (40043=0) : Closed contact between pins 1 & 2 will open the valve. Closed contact
between pins 1 & 3 will close the valve
D Analog Input: valve will respond to proportional demand
D Modbus: valve will respond to positional demand in register 40001. 0 = fully closed and 100 = fully open.
4. If the valve does not respond as expected, proceed to Troubleshooting guide on page 15.
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. Unit does not move
a. Verify that 12VDC to 24VDC is present on the power terminals as shown on the cover
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. Unit 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: 40033=0, positioning: 40034=1).