Emerson Fisher D3, Instruction Manual

Page: 9 / 36

Instruction Manual
D103460X012
D3 Valve with easy-Drive Actuator
October 2017
9
This order of operation must always be maintained when powering the unit on if no external 250 ohm resistor is used:
1. 12/24VDC power on
2. 4­20mA control signal engaged
This order of operation must always be maintained when powering the unit off:
1. 4­20mA control signal disengaged
2. 12/24VDC power off
The result of not following this order of operation could result in permanent damage to the analog input circuitry. This
damage can result in the inability of the controller to see the control signal, resulting in the actuator moving the valve
plug to the loss of signal position.
Default Input Signals
The D3 with easy­Drive comes from the factory calibrated and ready for use with the following default input signals
shown in table 2.
Table 2. D3 easy-Drive Default Input Signals
CONFIGURATION ON/OFF POSITIONING
Input Signal L2e (dual dry contact) 4-20 mA
If the input signal of the application matches table 2, proceed to the Wiring Instructions section. If the input signal of
the application does not match table 2, proceed to the Configuration section.
Configuration
Input Configuration
There are 2 functional configurations available for the easy­Drive electric actuator: On/Off and Positioning. It is not
possible to change an actuator from On/Off to Positioning after it has been delivered from the factory. Version 4.21
and higher firmware will allow a positioning unit to be changed to on/off.
All available input signals are shown in table 3.
Table 3. All Available Input Signals
CONFIGURATION ON/OFF POSITIONING
Control Source Modbus Local Modbus Local
Input Signal Modbus
L2e Dual Dry
Contact (default)
Single Dry Contact Modbus 4-20 mA (default) 1-5 V
If you are using the default inputs signals, and the valve has not been disassembled or adjusted in any way, there is no
need to recalibrate the assembly. You can proceed directly to Startup (page 12).
Changing the Inputs from Default Settings
All configuration within the valve is done by setting values in Modbus registers. This can be done using any Modbus
master (flow computer, PLC, PC). Configuration software, providing a visual interface to the registers, is available
through your
Emerson sales office or Local Business Partner.
Modbus setup
Use the instructions in the instruction manual for the Modbus master to initiate the connection. The D3 with
easy­Drive electric actuator Modbus factory defaults are Address 1, 9600 baud, even parity, 1 stop bit.