N2/FC and SA bus and supply power wiring guidelines - Metasys - MS-VMA1826-x - MS-VMA1832-x - Field Device - VMA18 VAV Modular Assembly

VMA1826/1832 VAV Controller Installation Guide

Product name
VMA18 VAV Modular Assembly
Document type
Installation Guide
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Table 1 provides information about terminal block functions, ratings, and requirements.

Table 1 also provides wire size, cable type, and cable length guidelines for wiring the VMA communication buses and supply power.

In addition to the guidelines in Table 1, observe these guidelines when wiring the SA and N2/FC Buses and supply power:

  • Run all low-voltage wiring and cables separate from high-voltage wiring.

  • All N2/FC and SA Bus cables, regardless of wire size, should be twisted, insulated, stranded copper wire.

  • Shielded cable is strongly recommended for all N2/FC and SA Bus cables.

  • Refer to the N2 Communications Bus Technical Bulletin (LIT-636018) for detailed information regarding wire size and cable length requirements for the N2/FC and SA buses.