Table 11: VMA1615/1626/1628/1630 Controllers
RS-485: selectable between BACnet MSTP or N2
FC Bus: 0.6 mm (22 AWG) standard 3-wire, twisted, shielded cable recommended between the
supervisory controller and field controller
10/100 Mbps; 8-pin RJ-45 connector
SA Bus: 0.6 mm (22 AWG) stranded, 4-wire (2-twisted pairs) shielded cable recommended from
the VMA controller for network sensors and other sensor/actuator devices; includes a terminal to
source 15 VDC supply power from VMA to SA Bus devices
1
Communications Bus
1
RX630 32-bit Renesas microcontrollerProcessor
1 MB flash memory and 512 KB RAMMemory
UI Analog Input Mode: 15-bit resolution on UIs
CO Analog Output Mode (VMA1626/1628/VMA1630 only): 0–10 VDC ± 200 mV
Universal Input
Mode/Configurable
Output Mode Accuracy
Range: -1.5 in. to 1.5 in. W.C.
Performance Characteristics:
Accuracy: ±1.3% Full Span Maximum
2
(±0.039 in. W.C.)
Typical accuracy at zero (null) pressure is ±0.02 in. W.C.
3
(if provided)
Air Pressure Differential
Sensor
4 N·m (35 lb·in) minimum shaft length = 44 mm (1-3/4 in.) (if provided)Actuator Rating
Mounts to damper shaft using single set screw and to duct with single mounting screwMounting
165 x 125 x 73 mm (6.5 x 4.92 x 2.9 in.)
Center of Output Hub to Center of Captive Spacer: 135 mm (5-5/16 in.)
Dimensions
(Height x Width x Depth)
0.65 kg (1.45 lb)Weight
United States:
UL Listed, File E107041, CCN PAZX, UL 916, Energy Management Equipment; Suitable for use in
other environmental air space (plenums) in accordance with Section 300.22(C) of the National Electric
Code.
FCC Compliant to CFR47, Part 15, Subpart B, Class A.
Compliance
Canada:
UL Listed, File E107041, CCN PAZX7, CAN/CSA C22.2 No. 205, Signal Equipment.
Industry Canada Compliant, ICES-003
Europe:
CE Mark – Johnson Controls declares that this product is in compliance with the essential
requirements and other relevant provisions of the EMC Directive.
Australia and New Zealand:
RCM Mark, Australia/NZ Emissions Compliant.
BACnet International
BACnet Testing Laboratories (BTL) Protocol Revision 12 Listed BACnet Advanced Application
Controller (B-AAC)
1
For more information, refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034)
2 Combined error due to offset, non-linearity, and temperature variation.
3 Includes error due to non-linearity.
22VMA1615/1626/1628/1630 VAV Controllers Installation Instructions
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