Limitorque QX Electronic Actuator FCD LMENIM3306-06 – 07/14
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4.7.1 Close Torque Valve or Open Torque Valve
The output torque from the actuator to close or open the valve may be configured between 40% and 100% of the rated
torque as stated on the actuator nameplate (See Figure 4.10), in 1% increments (unless limited by the factory).
To Increase the % of Torque Required:
1. Select “NO” until the desired % is indicated.
2. Select “YES” to save the required torque.
Should the user select a maximum torque setting less than 100% due to valve or gearbox limitations, this selection can
be password protected.
Figure 4.10 – Typical QX nameplate
4.8 Position Setup
Enter the Change Settings Menu. After successfully entering the password, answer “NO” to the Change Settings menu
prompts until you reach the prompt “CHANGE POSITION SETUP?” Answer “YES.” The positions can be changed either
electronically (Section 4.8.1) or manually (Section 4.8.2).
4.8.1 Set Position Limits for Electrical Operation
1. Refer to Figure 4.11, Electrical operation.
2. To set the valve closed position, select “YES” to the “SET CLOSE POSITION LIMIT?” display. At the “CLOSE
VALVE–OK?” prompt, answer “YES” and move the red control knob to “LOCAL.” Hold the black control knob in the
“CLOSE” position until the valve has reached the desired position. Move the red control knob to “STOP.” If the valve
close position is correct, select “YES” to the “CLOSE VALVE OK?” prompt and “YES” to “SAVE CLOSE LIMIT OK?”;
otherwise, select “NO” to return to the “SET CLOSE POSITION LIMIT?” display.
3. To set the valve open position, select “YES” to the “SET OPEN POSITION LIMIT?” display. At the “OPEN VALVE–
OK?” prompt, answer “YES” and move the red control knob to “LOCAL.” Hold the black control knob in the
“OPEN” position until the valve has reached the desired position. Move the red control knob to “STOP.” If the valve
open position is correct, select “YES” to the “OPEN VALVE OK?” prompt and “YES” to “SAVE OPEN LIMIT OK?”;
otherwise, select “NO” to return to the “SET OPEN POSITION LIMIT?” display.
Rated Actuator Torque
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