Specifications

WESTLOCK CONTROLS CORPORATION
280 MIDLAND AVENUE, SADDLE BROOK, NJ 07663 TEL: [phone] FAX: [phone]
www.westlockcontrols.com
1/12/10 TECH-439/D.W.O. 19024 Page 22 of 58
3.6 Electrical Connection
A) The certification applies to equipment without cable glands. When mounting the
enclosure in the hazardous areas, only suitably certified cable glands and
blanking elements must be used to maintain ingress protection of IP66.
B) All unused cable entries must be plugged with suitably certified plugs that can
maintain an ingress protection level of IP66.
C) The positioner, switches, sensors and coils shall be electrically connected
suitable to the rated data via a certified isolating interface/zener barrier placed
outside the hazardous areas.
D) For ambient temperatures below -10~C and above +60~C, use field wiring suitable
for both minimum and maximum ambient temperatures.
E) Electromagnetic compatibility (emissions and susceptibility) is guaranteed if, and
only if, the unit and all cables are shielded and grounded as illustrated in
Appendix F.
1. Remove positioner cover.
2. Locate terminal strip and carefully disconnect (slide
off).
3. Connect the 4 to 20 mA loop signal to terminal points
marked (+) and (-). See figure 3-12 for a wiring
schematic.
4. If the positioner was ordered with an analog output,
connect output wiring to terminal points 5 & 6,
(polarities shown on figure 3-12). The 4-20mA
analog output is of the current sink type therefore it
requires a suitable external DC power supply
(24VDC nominal).
5. If the positioner was ordered with switches, connect to the switches at terminal points
1 thru 4, as shown in Figure 3-12.
6. After all connections have been made reconnect the terminal strip and replace
positioner cover.