CRANE
CO.
280
N.
MIDLAND
AVE.,
STE
258,
SADDLE
BROOK,
NJ
07663
WWW.AVIDCONTROLS.COM
12/17/12
TECH-440/D.W.O. 23135
Page 19 of 55
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 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 3-10 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 3-10). 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 3-10.
6. After all connections have been made reconnect the terminal strip and replace
positioner cover.
