Johnson Controls Metasys VMA1610, Installation Instructions Manual

Page: 8 / 19

Table 1: I/O Terminal Blocks, Functions, Ratings, Requirements, and Cables
To Determine Wire Size and
Maximum Cable Length Function, Ratings, and Requirements Terminal
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 OCOM n 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.
8 VMA1610 and VMA1620 Variable Air Volume Controllers Installation Instructions