Johnson Controls Metasys VMA1620 User Manual

Table 1: I/O Terminal Blocks, Functions, Ratings, Requirements, and Cables
To Determine Wire Size and
Maximum Cable Length
Function, Ratings, and RequirementsTerminal
Labels
Terminal Block
Label
See Guideline C in Table 2.
Binary Output - 24 VAC Triac (Internal Power)
Sources internal 24 VAC power (24~ HOT)
OUTn
BINARY
(Outputs)
Binary Output - 24 VAC Triac (Internal Power)
Connects OCOMn to 24~ COM when activated.
Internal Power Source:
30 VAC maximum voltage to load
0.5 A maximum output current
1.3 A at 25% duty cycle
Maximum 6 cycles/hour with M9220-BGx-3
40 mA minimum load current
OCOMn
See Guideline A in Table 2.
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 2.
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
Maximum 6 cycles/hour with M9220-BGx-3
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.
Binary Output Signal Common: All Configurable Outputs
defined as Binary Outputs are isolated from all other
commons, including other Configurable Output commons.
OCOMn
1
See Table 2 to determine wire size and cable lengths for cables other than the recommended cables.
Table 2 defines cable length guidelines for the various wire sizes that may be used for input and output wiring.
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Johnson Controls Metasys VMA1620 Specifications

General

Brand	Johnson Controls
Model	Metasys VMA1620
Category	Controller
Language	English