Hi, I'm Alex with Kimray. The Tritex II houses a servo drive positioner and
electric actuator in one package. It can be used to provide electric control on
any open/closed, or modulating application. Today we're going to show
you how to set it up with a 4-20mA signal for your RTU, SCADA
system, or Kimray electric pilot. Once you have this program template built, you can
use it to quickly flash on to your other actuators with the same application.
For this setup you will need:
You will also need the software from Exlar and a Windows driver installed on your laptop.
Before installing the wiring you'll need to connect the mounting bracket to the
valve then connect the actuator to the bracket. Next, slide the anti-rotate
device onto the shaft of the actuator and apply Loctite to the threaded shaft
end of the coupling block adapter and tighten.
Now you will install the wiring.
We recommend a 12 gauge wire for power.
Take 12-48 volts DC to the bus and common terminals .
Then put a jumper between the bus terminal and logic terminal.
Wire the inputs to J5, terminal pin 1, labeled AI+ and pin 2 labeled AI-.
If you want position feedback they are wired to J5
terminal pins 3, labeled AO+ and 4 labeled AO-.
Next we'll connect the communications cable to your laptop.
Launch the expert software program and create a new template.
Select "file", "new"
and then "application".
Select "DC 48 volt Tritex II",
then select "IA4 Option Board"
and "generic" under applications template.
Enter a name for the application such as your site name well pad number or valve description.
Then enter an application author and description if you'd like. Click "OK".
Now you will establish communication to the actuator
Select "view" and then "network communications manager".
Select "remove network" and then select "add network".
Use the default setting "Modbus RTU" for the
type of network to be created. Leave all general settings as default but open the
rs-485 serial tab.
Use the drop down under communications port name to select the appropriate comport for your PC.
Select "scan Network".
The status should now show connected and you can close the network manager window.
Next we'll read parameters from the drive and adjust the user units.
Press the "up" arrow located on
the menu bar to read the parameters from the actuator to the PC
You should now see the lights flickering on the USB port as the PC is uploading parameters from the drive.
Adjust the user units by expanding the setup tree and selecting "user units".
Select "apply" when finished.
Next, couple the actuator to the valve and define home.
This step is dependent on the status of the actuator. This can be viewed in the
status bar at the bottom of the software home page.
On the input function control window on the right side of the screen select "enable maintained".
Now select "define home" and temporary call this position home.
Use "jog +" or "jog -" to move
the actuator either up or down to attach the coupler.
Select "reset faults" if the current limit is reached.
Now we are going to configure the system setup.
On the left side of the screen under the directory tree, select "system setup".
Check the boxes for "auto enable on startup", "allow jog override of default mode operation",
and "reverse direction polarity".
Now move to the faults enables tab.
If you want the valve to open or closed on low bus voltage for a solar application
you can check the "auto reset on low bus voltage fault box".
Also check the boxes for "move" or "stop" in the user low bus voltage row.
Now move to the limits tab.
Leave user current limit as default 20A. User low bus voltage limits can be
configured here. Consult your Kimray rep for recommendations.
If you want the valve to open or close on low bus voltage for solar applications
set the user low bus voltage number.
Next, click the "operating modes" tab.
If you're using a digital input for a level controller or tuning fork to control the actuator
leave these settings as default.
If you're using 4-20mA input set
the default to analog position and the alternate to digital inputs.
Next, go to "dedicated move". This will set what the actuator does upon fault condition.
In many cases, a closed position is desired.
Positions should remain at zero which is closed.
If open fail is desired, input full open position of the valve in position window
Select a speed at which the actuator should move.
Now go to the "Position Limits" tab.
Configure your seating routine and fold back current draw for power consumption.
Your fold back current may need to be increased if the valve doesn't completely shut off.
Leave "enable min" unchecked if power consumption is not a concern or if you're using digital
inputs like a level controller or tuning fork.
Next, we'll configure the homing routine.
Select "motion" and then "home" from the directory tree.
Velocity is typically set to a slow setting.
Current limit can be adjusted depending on how hard the
valve is to be seated. In start-up against higher pressure situations you
may want a higher home current.
The max you can set your home current limit is whatever your user current limit is set to in limits.
Check the box "Auto home on enable".
Now, we'll configure the 4-20mA command. Select "analog position"
from the directory tree. Minimum position is typically "zero" or closed.
Maximum position is typically near full open.
Make sure to check the valve stroke specification.
Velocity limit is adjustable depending on how fast the valve should act.
Acceleration should be set to one inch per second per second.
Once you have this program built, save the file.
Click "Save" and then "save application as".
If you have a standard program for multiple applications, hook the laptop to
each actuator via the communication cable and press the "down" arrow, located
on the menu bar, to store the modified parameters to that actuator.
If you have any questions about this process, contact your local Kimray store or authorized distributor.