WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 42 of 206
terminal points for connection with a “+” and “-”, respectively.
7.1.3 Pneumatic Connection
Single Acting:
Output port 1 should be piped to drive the actuator away from the valves fail
position. Output port 2 should be plugged. (See Section 5.5)
Double Acting:
Output port 1 should
be piped to drive the actuator away
from the valves fail position. Output
port 2 should be piped to drive the
actuator towards the valves fail
position. (See Section 5.5)
7.1.4 Magnetic Position
Feedback
Rotary Positioner:
The magnetic
beacon should be set in the proper
orientation, based on the direction
of failure. (See Section 5.7)
Linear Positioner:
The magnetic
assembly supplied with the
positioner should correspond to the
stroke length and failure direction of
the actuator. To make sure you
have the appropriate magnet assembly, check the part. The stroke length and failure
direction should be printed on the part. On the older ICoT the magnet assembly is not
printed with this information, although there should be a serial number. Contact the factory
with the serial number to verify that it is correctly matched to the actuator. (See Figure 7-1
& Figure 7-2).
7.1.5 Supply Pressure
The supply pressure should be regulated appropriately with regard to the actuator. If there
is question as to the proper supply pressure, the actuator manufacturer should be
contacted.
7.1.6 Positioner Pressure Rating
If the supply pressure is above 40 PSI a high pressure ICoT positioner must be used. If the
supply pressure is below 40 PSI a low pressure ICoT positioner must be used.
Figure 7-2
