Claire Corlett

Fish Food, Fish Tanks, and More
Inital Setup of the Fisher easy-Drive Gen 2 Electric Actuator

Inital Setup of the Fisher easy-Drive Gen 2 Electric Actuator


Today we’ll be showing you how to set up
the Gen 2 Fisher easy-Drive Electric Actuator. As always, make sure you take
the appropriate safety precautions described in your instruction manual.
We’ll also be using the easy-Drive configuration tool software to calibrate
the valve and configure other important variables so you’ll need a computer
accessible for the setup. To download the configuration tool visit Fisher.com/easyDrive and click user tools to find the free download. First, we’ll
connect the wiring to the terminals within the easy-Drive on this D4 globe
valve. Make sure none of your wires are live during this procedure. Here are some
important wiring practices to follow. Make sure you’re qualified to do the
wiring and observe all appropriate wiring practices for hazardous locations.
18 to 12 gauge wire size is required. For long wiring runs we recommend using a
lower gauge. For power any wire over 50 feet should be 12 gauge due to the
voltage drops. Fuse the system to 5 amps, 4 amps supply minimum at 12 or 24 volts
DC. Make sure all signal shields are connected at the signal source only. Now,
let’s wire the positioning version of the easy-Drive electric actuator. Each
terminal, on the terminal cap, has been clearly labeled. The power is polarity
sensitive so make sure the power cabling has been properly installed and grounded
before attempting to power the actuator. Analog signal wiring should be installed
across the terminals labeled 4 to 20 milliamp plus and 4 to 20 milliamp minus
connecting the positive and negative wires respectively.
Shielded signal wire is preferred in all installations and
should be grounded at the signal source only. The actuator has an additional
configurable digital input/output. For wiring as an input connect a dry contact
switch to terminals digital plus and digital minus. It’s a 10 volts DC input.
Attach RS-485 MODBUS wires to MODBUS terminals A and B. Apply power to the
unit. A green LED light to the right of the terminals will blink when the power
is on. Next the easy-Drive configuration tool will allow you to easily access and
change settings to meet your calibration and configuration needs. With power
supplied to the board, the easy-Drive configuration software will connect to
the easy-Drive actuator upon startup and automatically populate the present
settings. On the control tab, select your desired method to control the valve. In
this video we’re showing 4 to 20 milliamp positioning. If this selection
is not available a license will need to be installed.
Insert the license key included with your easy-Drive Gen 2 purchase. If you do
not have a license key contact your local Emerson representative. After
inserting the license key, select manage licenses, move the license from the key
to the valve, verify the positioning license has been installed before
removing the license key, select 4 to 20 milliamp positioning, and click apply. The
function of the control signal can be modified with the settings in the
control section. The loss of signal position determines where the valve will
move to if the input signal drops below 3 milliamps. The low travel cutoff is the
minimum position setting the valve moved to
before moving fully closed. The deadband is the minimum change in input signal
before a move will occur. Retries determine how many times the valve will
attempt to move following a motor stall. Changes to these values will result in
the background color changing and a section labeled pending changes to
appear. Adjust the control variables accordingly and click apply to confirm
all changes. Once you’ve adjusted the values to your requirements you are
ready to calibrate the span. This is required to make the valve move. First
verify the selected valve type matches your valve. If the valve type doesn’t
match, click the system tab advanced button and select the appropriate valve
type. Select apply. Press calibrate span. Wait for notification that calibration
is complete. In the calibration tab calibrate open to closed values. Select 4
to 20 milliamp level and click apply. The Gen 2 easy-Drive controller has a mode
specifically created for heater treater level applications where the transmitter
is connected directly to the valve. It allows different open and closed points
to be configured. If the valve is closed it will not open until the signal is
above the open position at which point the valve will open to that level and
modulate normally. The valve will then close when the signal drops below the
closed signal and not reopen until the open signal has been reached.
Next the digital auxiliary input output section provides the flexibility of an
additional local digital input or output. If the I/O is set to input, closing a
contact connected to the digital input terminals will result in the valve
moving to the loss of signal position. If the I/O is set to output, the input
will turn on when the valve is fully closed, fully open, or in position as
selected. The output is capable of delivering 25 milliamps
at 10 volts DC, the status shows whether the input or output is enabled.
Lastly, you can name the valve in the connection. Select the connection tab and
click on device name, modify this field with the valve name of twenty characters
or less. Well, that’s how you wire and setup your easy-Drive Gen 2 electric
actuator. Contact your local sales representative or visit Fisher.com/easyDrive to learn more. Thanks for watching!

Leave a Reply

Your email address will not be published. Required fields are marked *