LTQ008 – LTQ230 Series 3-Phase Products User Instructions – AIIOM000165 EN
Page 25 of 40
a. If it does NOT, check the polarity of the incoming analog signal to make sure it is (+)12mA.
b. Return to step 3.
ii. If the actuator moves momentarily and then STOPS at the mid stroke position, proceed to step 4.
iii. If the actuator does not move at all, rotate the handwheel slightly in either direction to offset the
controller.
1. The actuator should move back to the midpoint position and then STOP.
2. Proceed to step 4.
4. Generate a CW move command (4mA) and verify the DIRECTION of the position indicator is CW.
a. The actuator should run CW and run until it reaches its CW end of travel position.
b. While power is on, an analog feedback signal OUT provides an electronic position of the actuator... i.e.
4mA = full CW and 20mA = full CCW positions (reference actuator terminals #6 and #7).
c. On LTQ008+ Series units, during CW travel movement, depress the lever on the UPPER torque switch to
interrupt actuator movement as a check of the system.
5. Generate a CCW move command (20mA) and verify the DIRECTION of the position indicator is CCW.
a. The actuator should run CCW and run until it reaches its CW end of travel position.
b. While power is on, an analog feedback signal OUT provides an electronic position of the actuator... i.e.
4mA = full CW and 20mA = full CCW positions.
c. On LTQ008+ Series units, during CCW travel movement, depress the lever on the LOWER torque switch to
interrupt actuator movement as a check of the system.
6. If the actuator does NOT stop at the correct positions, fails to move in the correct directions, or fails to stop
movement when the respective torque switch levers are depressed, IMMEDIATELY STOP the operation of
the actuator and refer to the Table of Contents for the section to reference for the corrective action
needed.
7. Check the full scale response of the analog signals into and out of the actuator by referring to page 32.
8. If the actuator stops at the correct positions and generates a feedback signal representative of the position
of the actuator, the actuator can be put into service and is fully operational.
6.4 LCS Commissioning for BIC + LL On/Off Control
- Allowing the motor to drive the gear train into the mechanical stop will result in severe
damage to the actuator! Remove power from this device before making any travel adjustments.
1. After the actuator and valve (damper) assembly have been installed with power and control connected,
before applying power, use the handwheel to rotate the actuator to a mid-travel position.
2. Place the LCS mode switch in the OFF position, and apply 3-phase power.
a. The actuator should not move.
i. If it does move, immediately remove power from the actuator to stop movement.
ii. If it does not move, proceed to step 3.
iii. Check the control wiring on terminals 4 – N on the actuator, correct if necessary, and repeat step 2.
3. Place the LCS move switch in the STOP position, and place the mode switch in the LOCAL position.
a. The actuator should not move.
4. Place the LCS move switch in the CW (0°) position, and verify that the direction of the position indicator is
CW.
a. On LTQ008 Series units, during CW travel movement, depress the lever on the upper torque switch to
interrupt the movement of the actuator, as a check of the system.
b. While traveling to the fully CW (0°) position, the CLOSE LED will be flashing.
c. When the actuator reaches its fully CW (0°) end-of-travel position, the CLOSE LED indicator will stay
illuminated on the face of the LCS.
d. Place the LCS move switch in the CCW (90°) position, and verify that the direction of the position
indicator is CCW.
e. On LTQ008 Series units, during CCW travel movement, depress the lever on the lower torque switch to
interrupt the movement of the actuator, as a check of the system.
f. While traveling to the fully CCW (90°) position, the OPEN LED will be flashing.
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