IAI5001-01
Page 6 of 9
07/18
Commissioning
This procedure will assume that the actuator is installed correctly, both mechanically and electrically, with
correct power, and has been manually cycled.
Electrically test Full OPEN (CCW) and CLOSE (CW) positions.
A.
Apply power to terminals marked 1 & 3 (OPEN)
•
The actuator will drive to the full OPEN (CCW) position (as viewed from ABOVE the
actuator).
•
If this is NOT the correct stop position, refer to the “Limit Switch Setting” section below
to reset LS1.
B.
Remove power from terminal marked 3 (CLOSE)
•
The actuator failsafe springs will drive to the full CLOSE (CW) position (as viewed from
ABOVE the actuator).
•
If this is NOT the correct stop position, refer to the “Limit Switch Setting” section below
to reset LS2.
Limit Switch Setting
The travel cams are set to control the open and closed position of the valve. The position is set to stop the travel
of the actuator when the travel cams activate the limit switch. Standard is two limit switches (LS1 & LS2), one
for open, one for closed. LS1 & LS2 limit the maximum range by disabling the electric motor. LS3 & LS4 are
optional. See Photo 10. They allow external equipment to confirm that the valve has reached the fully open and
fully closed positions.
Care must be taken to ensure that LS3 & LS4 are set to trip prior to LS1 & LS2, so that
proper end of travel indication is provided.
The travel cams can be adjusted with a 2.5mm Allen key.
NOTE:
For units that are not equipped with a manual override, power will need to be supplied to the actuator
to set some of the limits. If the unit has a fail-position CW on power loss, you will require power to set
LS1 and LS3. If the unit has a fail-position CCW on power loss, then power will be needed to set LS2 and
LS4. Care must be taken when adjusting these limits with live power present.