Wiring Diagram - Spectrum Controls 1762sc-IF4OF4 User Manual

2-8 Chapter 2: Installation and Wiring
User's Manual Pub. 0300247-01 Rev. D

Ground the shield drain wire at one end only. The typical location is as
follows:
-
For grounded thermocouples or millivolt sensors, this is at the sensor
end.
-
For insulated/ungrounded thermocouples, this is at the module end.
Contact your sensor manufacturer for additional details.

Refer to Industrial Automation Wiring and Grounding Guidelines, Allen-
Bradley publication 1770-4.1, for additional information.
Noise Prevention

Route field wiring away from any other wiring and as far as possible
from sources of electrical noise, such as motors, transformers, contactors,
and ac devices. Generally, allow at least 15.2 cm (6 in.) of separation for
every 120 V of power.

Routing field wiring in a grounded conduit can reduce electrical noise.

If field wiring must cross ac or power cables, ensure that they cross at
right angles.

To limit the pickup of electrical noise, keep thermocouple and millivolt
signal wires as far as possible from power and load lines.

If noise persists for a device, try grounding the opposite end of the cable
shield or ground both ends of the shield.

2.6.1 Wiring Diagram

Refer to the following wiring diagrams for field wiring connections.
Figure 2-5 (Wiring Diagram)