IST
Page 10
The Interface Solution Experts
+
+
For DC powered units, substitute:
DC DCC GND
NON-ISOLATED
2-WIRE
TRANSMITTER
POWER
SOURCE
117, 230, OR
240 VAC
OR
24VDC
CURRENT-
DRIVEN
DEVICE
+IN
+IN
TX +OUT-OUT
ACACCGND
ZERO
SPAN
IST
ISOLATING SIGNAL
TRANSMITTER
ZERO
SPAN
-OUT
+OUT
TX
–
+
A
B
24V POWER SUPPLY
–
+
–
24V POWER SUPPLY
–
–
CURRENT-
DRIVEN
DEVICE
+
NON-ISOLATED
2-WIRE
TRANSMITTER
+
–
Recommended Ground
Wiring Practices
The following ground wiring practices must be fol-
lowed to ensure proper performance of the IST:
• Any Moore Industries product in a metal case or
housing should be grounded. Units in DIN
housings, for example, should be mounted on a
grounded rail.
• All input signals to, and output signals from
Moore Industries’ products should be wired
using a shielded, twisted pair technique. Shields
are to be connected to earth or safety ground at
the unit itself.
• The maximum length of any unshielded input
and/or output signal wiring is 2 inches.
CE Conformity
Installation of any Moore Industries products that
carry CE the certification (Commission
Electrotechnique)
must
adhere to the guidelines
above in order to meet the requirements set forth in
applicable EMC (Electromagnetic Compatibility) di-
rectives (EN55011, EN 50082-1, EN50082-2, etc.)
Consult the factory for the most current information
on products that have been CE certified.
Figure 9. Installing the Dual IST with the TX and EP Options
