Johnson Controls Metasys VMA1610 User Manual

Table 2: Cable Length Guidelines for Recommended Wire Sizes
AssumptionsMaximum Cable Length and TypeWire Size/Gauge and TypeGuideline
100 mV maximum voltage drop
Depending on the cable length
and the connected input or
output device, you may have to
define an offset in the setup
software for the input or output
point.
457 m (1,500 ft) twisted wire1.0 mm (18 AWG) stranded copperA
297 m (975 ft) twisted wire0.8 mm (20 AWG) stranded copper
183 m (600 ft) twisted wire0.6 mm (22 AWG) stranded copper
107 m (350 ft) twisted wire0.5 mm (24 AWG) stranded copper
100 mV maximum voltage drop
Depending on the cable length
and the connected input or
output device, you may have to
define an offset in the setup
software for the input or output
point.
229 m (750 ft) twisted wire1.0 mm (18 AWG) stranded copperB
137 m (450 ft) twisted wire0.8 mm (20 AWG) stranded copper
91 m (300 ft) twisted wire0.6 mm (22 AWG) stranded copper
61 m (200 ft) twisted wire0.5 mm (24 AWG) stranded copper
N/A
See Figure 7 to determine cable length.
Use twisted wire cable.
See Figure 7 to select wire size/gauge.
Use stranded copper wire.
C
Termination Details
A set of Johnson Controls® termination diagrams provides details for wiring inputs and outputs to the controllers.
See the figures in this section for the applicable termination diagrams.
Table 3: Termination Details
Termination DiagramsType of
Input/Output
Type of Field Device
UI
UIVoltage Input - External
Source
UIVoltage Input - Internal
Source
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Johnson Controls Metasys VMA1610 Specifications

General

Brand	Johnson Controls
Model	Metasys VMA1610
Category	Controller
Language	English