Spectrum Controls 1756sc-OF8H Series A - Manual (Page 26)

12 ControlLogix ™ Analog HART Modules
1. Insert the U-shaped band with the longer side near the terminals. Push
the band onto the module until it snaps into place.
Figure 2.2 (Terminal block diagram with keying)
Wiring Your Module Follow these guidelines to wire your input signal cables:
• Power, input, and output (I/O) wiring must be in accordance with
Class 1, Division 2 wiring methods [Article 501-4(b) of the National
Electrical Code, NFPA 70] and in accordance with the authority
having jurisdiction.
• Peripheral equipment must be suitable for the location in which it is
used.
• Route the 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. As a general rule, allow at
least 6 in. (about 15.2 cm) of separation for every 120 V of power.
• Routing the field wiring in a grounded conduit can reduce electrical
noise further.
• If the field wiring must cross ac or power cables, ensure that they
cross at right angles.
• To limit the pickup of electrical noise keep signal wires as far from
power and load lines as possible.
• For improved immunity to electrical noise, use Belden 8761 (shielded,
twisted pair) or equivalent wire for millivolt sensors