Honeywell FSC-SM, Installation Manual, Page: 40 / 76

28 FSC Safety Manager Installation Guide 10/01
2.4 Cabling Considerations,
Continued
Cabling and wiring
guidelines
Observe the guidelines presented in Table 2-7 when routing cables to the
FSC Safety Manager cabinet. Pay special attention to separating data
cables from power cables to avoid electrical noise problems.
Table 2-7 – Cabling guidelines
Consideration Description
1
Maintain a 60°C (140°F), or less, ambient air temperature at the bottom of each FSC
Safety Manager system.
2 Do all wiring according to IEEE Standard 518-1977.
3 Separate all AC and low-level DC wiring. See Table 2-4, Table 2-5 and Table 2-6 for
the recommended minimum distances.
4
Shields of data communications cables must be terminated at both ends. Shields of
analog signal cables must be terminated to ground only at the signal source. If a
termination is not made, or is intermittent, noise immunity is lost.
5
Data and power cables should cross at right angles and not run in parallel for any
distance.
6 Ensure that the entire communications network system is grounded to earth ground.
7 Maintain shield continuity. Ensure that shield leads are not broken.
8 Route cables around rather than through high noise areas.