Johnson Controls MS-VMA1620-0 Metasys VAV Controller
$1,348.00
The Johnson Controls MS-VMA1620-0 is an integrated VAV controller, actuator, and differential pressure sensor configured for cooling with reheat and fan control. Its integral 4 N·m actuator strokes the damper in 60 seconds, controlling box airflow without the need for separate field-mounted hardware.
4 in stock
Description
- Integrated Actuator: Drives the damper with a torque of 4 N·m.
- Reheat Control: Sequences cooling, reheat, and fan operation.
- BACnet Connectivity: Communicates over RS-485 MS/TP bus networks.
- Onboard Pressure Sensing: Measures box airflow via a differential transducer.
- Metasys Integration: Operates within the web-based Metasys system.
Documentation
Technical Specifications
| Manufacturer | Johnson Controls |
|---|---|
| Part Number | MS-VMA1620-0 |
| Type | VAV Controller |
| Series | VMA16 |
| Compatibility | Metasys Systems |
| Supply Voltage | 24 VAC (20–30 VAC), 50/60 Hz |
| I/O Configuration | 1 UI, 3 BO, 2 CO |
| Power Consumption | 10 VA typical, 14 VA maximum |
| Actuator | Torque: 4 N·m (35 lb·in) Stroke @ 60 Hz: 60 sec Stroke @ 50 Hz: 72 sec Min. Shaft: 44 mm (1-3/4") |
| Communication | RS-485 BACnet MS/TP |
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Description
The MS-VMA1620-0 monitors and operates variable air volume boxes, running pre-engineered and user-programmed applications for cooling with reheat and fan control. It combines a digital controller, a 4 N·m damper actuator, and a differential pressure transducer in one assembly, reducing field wiring and separate component mounting on the VAV box.
It carries a 1 UI, 3 BO, 2 CO point configuration and operates on an RS-485 BACnet MS/TP bus as a BACnet Application Specific Controller within the web-based Metasys system. Power comes from a 24 VAC Class 2 supply drawing 10 VA typical, and inputs and outputs land on 1/4" spade-lug terminations.
Frequently Asked Questions
Does the MS-VMA1620-0 require a separate actuator?
No. The actuator is integral, delivering 4 N·m of torque to drive the VAV box damper directly, so no external actuator is needed.
What network does the MS-VMA1620-0 communicate on?
It operates on an RS-485 BACnet MS/TP bus as a BACnet Application Specific Controller and integrates into the web-based Metasys system.
What is the minimum damper shaft length for installation?
The integral actuator requires a minimum shaft length of 44 mm (1-3/4") to mount directly onto the VAV box damper shaft.
