Input and Output 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
Part number
Document revision
Revision date

Table 1 provides information about the functions, ratings, and requirements for the VMA input and output terminals, and Table 2 provides guidelines for wire sizes and cable lengths.

In addition to the wiring guidelines in Table 1, observe these guidelines when wiring VMA inputs and outputs:

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

  • All input and output cables, regardless of wire size or number of wires, should consist of twisted, insulated, and stranded copper wires.

  • Shielded cable is not required for input or output cables.

  • Shielded is recommended for input and output cables that are exposed to high electromagnetic or radio frequency noise.

  • Cable runs of less than 30 m (100 ft) typically do not require an offset in the input/output software setup. Cable runs over 30 m (100 ft) may require an offset in the input/output software setup.