Quick Installation Guide
Smart Wireless THUM Adapter
Loop Current Test
To verify that the THUM Adapter will work under all conditions, a loop current test should be performed. This test will exercise the loop under the highest possible voltage drop conditions.
1.Place loop in manual control.
2.Drive loop to high alarm level. For details see wired device instruction manual.
•When the THUM Adapter is connected to a valve, this will need to be done at the current source and not from the valve.
•When the THUM Adapter is connected to a transmitter, this will need to be performed at the transmitter.
3.Place the THUM Adapter into fixed voltage drop mode.
AMS
Right click on the THUM Adapter and select Configure. When the menu opens, select Manual Setup from the window on the left and select the Wired Device tab on the top. Make sure that the Time drop down menu at the bottom of the page has Current selected. Under the Voltage Drop drop down menu in the Smart Power Options box, select Fixed Voltage Drop. Hit the Apply button to make any changes. See Figure 23 on page 18.
Field Communicator
When communicating to the THUM Adapter select: Configure - Manual setup - Wired Device - Voltage Drop Mode. In the method choose Fixed Voltage Drop.
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Function | Key Sequence | Menu Items |
Voltage Drop | 2,2,2,2 | Voltage Drop |
4.Verify that the current on the loop reaches the high alarm levels.
5.Place the THUM Adapter into variable voltage drop mode.
AMS
Right click on the THUM Adapter and select Configure. When the menu opens, select Manual Setup from the window on the left and select the Wired Device tab on the top. Make sure that the Time drop down menu at the bottom of the page has Current selected. Under the Voltage Drop drop down menu in the Smart Power Options box, select Variable Voltage Drop. Hit the Apply button to make any changes. See Figure 23.
Field Communicator
When communicating to the THUM Adapter select: Configure - Manual setup - Wired Device - Voltage Drop Mode. In the method choose Variable Voltage Drop.
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Function | Key Sequence | Menu Items |
Voltage Drop | 2,2,2,2 | Voltage Drop |
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