Johnson Controls MS-VMA1826 series, Руководство по установке

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Table 4: I/O Terminal Blocks, Functions, Ratings, Requirements, and Cables
To Determine Wire Size
and Maximum Cable
Length
1
Function, Ratings, and Requirements Terminal
Labels Terminal Block Label
See Guideline A in Table 5 . Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
External 1k to 50K ohm load required
OUTn CONFIGURABLE
(Outputs)
See Guideline C in Table 5 . Binary Output 24 VAC Triac
Connects OUT to OCOM when activated.
External Power Source:
30 VAC maximum voltage to load
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current
Same as (Configurable) OUTn . Analog Output Signal Common : All
Configurable Outputs defined as Analog Outputs
share a common, which is isolated from all other
commons except the Binary Input common.
OCOMn
Binary Output Signal Common : All
Configurable Outputs defined as Binary Outputs
are isolated from all other commons, including
other Configurable Output commons.
1 Table 5 defines cable length guidelines for the various wire sizes that may be used for input and output wiring.
Table 5: Cable Length Guidelines for Recommended Wire Sizes
Assumptions Maximum Cable Length
and Type Wire Size/Gauge and Type Guideline
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 wire 1.0 mm (18 AWG) stranded copper A
297 m (975 ft) twisted wire 0.8 mm (20 AWG) stranded copper 297 m
(975 ft) twisted wire
183 m (600 ft) twisted wire 0.6 mm (22 AWG) stranded copper 183 m
(600 ft) twisted wire
107 m (350 ft) twisted wire 24 AWG stranded copper 107 m (350 ft)
twisted wire
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 wire 1.0 mm (18 AWG) stranded copper B
137 m (450 ft) twisted wire 0.8 mm (20 AWG) stranded copper 297 m
(975 ft) twisted wire
91 m (300 ft) twisted wire 0.6 mm (22 AWG) stranded copper 183 m
(600 ft) twisted wire
61 m (200 ft) twisted wire 24 AWG stranded copper 107 m (350 ft)
twisted wire
N/A See Figure 13 to determine
cable length.
Use twisted wire cable.
See Figure 13 to select wire size/gauge.
Use stranded copper wire.
C
19 VMA1826/1832 VAV Controller Installation Instructions