Technical specifications
Table 10: VMA1615/1626/1628/1630 Controllers
Product Code Numbers
MS-VMA1615-x:
32-bit, Integrated VAV Controller/Actuator/Pressure Sensor - DPT, 3 UI
and 2 BO, 24VAC, FC and SA Bus
MS-VMA1626-x:
32-bit, Integrated VAV Controller/Actuator (No Pressure Sensor - DPT); 3
UI, 3 BO, and 2 CO; 24VAC; FC and SA Bus
MS-VMA1628-x:
32-bit, Integrated VAV Controller/(No Actuator) Pressure Sensor - DPT; 3
UI, 3 BO, and 2 CO; 24VAC; FC and SA Bus
MS-VMA1630-x:
32-bit, Integrated VAV Controller/Actuator/Pressure Sensor - DPT; 3 UI, 3
BO, and 2 CO; 24VAC; FC and SA Bus
Communications Protocol
BACnet MSTP, N2
Engines
All Model types. Some NIE models support MS/TP and N2 devices. Refer to the
Network
Engines Product Bulletin (LIT-12012138)
for details.
Supply Voltage
24 VAC (nominal, 20 VAC minimum/30 VAC maximum), 50/60 Hz, Power Supply Class 2
(North America), Safety Extra-Low Voltage (SELV) (Europe)
Power Consumption
10 VA typical, 14 VA maximum
Note:
The VA rating does not include any power supplied to the peripheral devices
connected to Binary Outputs (BOs) or Configurable Outputs (COs), which can
consume up to 12 VA for each BO or CO, for a possible total consumption of an
additional 60 VA (maximum).
Ambient Conditions
Operating:
0°C to 50°C (32°F to 122°F)
Storage:
-40°C to 70°C (-40°F to 158°F)
Terminations
Inputs/Outputs: 6.3 mm (1/4 in.) Spade Lugs
FC Bus, SA Bus, and Supply Power: 4-Wire and 2-Wire Pluggable Screw Terminal Blocks
FC and SA Bus Modular Ports: RJ-12 6-Pin Modular Jacks
Controller Addressing for BACnet MSTP
DIP switch set; valid field controller device addresses 4–127
(Device addresses 0–3 and 128–255 are reserved and not valid field controller addresses.)
Controller Addressing for N2
DIP switch set; valid field controller device addresses 1–254
Communications Bus
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 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
Note:
For more information, refer to the
MS/TP Communications Bus Technical
Bulletin (LIT-12011034), Metasys IP Networks for BACnet/IP Controllers Configuration
Guide (LIT-12012458)
Processor
RX630 32-bit Renesas
®
microcontroller
Memory
1 MB flash memory and 512 KB RAM
Universal Input Mode/Configurable
Output Mode Accuracy
UI Analog Input Mode:
15-bit resolution on UIs
CO Analog Output Mode (VMA1626/1628/VMA1630 only):
0–10 VDC ± 200 mV
Air Pressure Differential Sensor
Range: -1.5 in. to 1.5 in. W.C.
Performance Characteristics:
Accuracy: ±1.3% Full Span Maximum (±0.039 in. W.C.)
Note:
Combined error due to offset, non-linearity, and temperature variation.
Typical accuracy at zero (null) pressure is ±0.02 in. W.C.(if provided)
Note:
Includes error due to non-linearity.
Note:
For more information, refer to the
MS/TP Communications Bus Technical
Bulletin (LIT-12011034), Metasys IP Networks for BACnet/IP Controllers Configuration
Guide (LIT-12012458)
Actuator Rating
4 N·m (35 lb·in) minimum shaft length = 44 mm (1-3/4 in.) (if provided)
Mounting
Mounts to damper shaft using single set screw and to duct with single mounting screw
VMA1615/1626/1628/1630 VAV Controllers Installation Guide
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