HVAC Central Monitoring
Il problema
AHUs, fan coils, VAV boxes, chillers, pumps and cooling towers are monitored on separate panels, so operators find faults by complaint rather than by alarm.
Panoramica della soluzione
MILESGO gateways collect data from air handling units (AHU), fan coil units (FCU), VAV boxes, chillers, chilled water pumps, cooling towers, room thermostats over BACnet MS/TP / Modbus RTU / Modbus TCP, and deliver it to the BMS, WEB HMI panels, SMS, email and messaging alarms as BACnet/IP / MQTT. Field equipment keeps its own protocol and control logic; integration is done by configuration and point mapping, not custom code.
Typical scope
- air handling units (AHU)
- fan coil units (FCU)
- VAV boxes
- chillers
- chilled water pumps
- cooling towers
- room thermostats
Protocol path
BACnet MS/TP / Modbus RTU / Modbus TCP → BACnet/IP / MQTT
Implementation checklist for the project manager
- Collect register maps and protocol documents from every equipment vendor early; a missing map is the most common delay.
- Devices on one serial channel must share protocol and communication parameters; group them per channel at design time.
- RS-485: shielded twisted pair, daisy-chain topology, termination at both ends, up to 32 nodes per segment without a repeater.
- Define an alarm matrix (priority, recipient, escalation) and test every alarm end to end at SAT.
- Daikin VRV systems connect through the HBS converter; for other brands confirm the manufacturer’s gateway or interface.
- Configure NTP so trends, alarms and meter readings carry consistent timestamps.
- Hand over configuration backups, point table, IP plan and as-built drawings, with a short operator training.
Project deliverables
- Signed point table and protocol mapping
- Gateway configuration files and backups
- IP address plan and network drawing
- FAT and SAT test records
- As-built documentation and operator training
Architettura del sistema
Field layer: air handling units (AHU), fan coil units (FCU), VAV boxes, chillers, chilled water pumps, cooling towers, room thermostats, connected over BACnet MS/TP / Modbus RTU / Modbus TCP. Edge and integration layer: MILESGO protocol gateways and edge controllers, mounted on DIN rail in existing panels, polling each device, time-stamping values and buffering them locally. Upper layer: the BMS, WEB HMI panels, SMS, email and messaging alarms, which receives the data as BACnet/IP / MQTT. Remote access for maintenance runs over VPN rather than open internet ports.
Composizione del sistema
- Field devices
- air handling units (AHU), fan coil units (FCU), VAV boxes, chillers, chilled water pumps, cooling towers, room thermostats
- Edge / integration
- MILESGO protocol gateways and edge controllers
- Upper systems
- the BMS, WEB HMI panels, SMS, email and messaging alarms (BACnet/IP / MQTT)
- Tools and commissioning
- Web-based configuration, point table import/export (Excel), off-site simulation and on-site diagnostic tools
Funzionalità software e IA
- Anomaly detection on trend dataIn roadmap
- Alarm noise reduction and root-cause groupingIn roadmap
Fasi di realizzazione
- 1
Site survey and point list
Inventory devices, protocols, register maps, panel space, power and network paths.
- 2
Design and point table sign-off
Map every point to the target protocol and system; agree it with the client and the upper-system contractor.
- 3
Configuration and FAT
Build the gateway configuration off site, simulate it and test against the signed point table.
- 4
Installation and wiring
Mount gateways on DIN rail, wire RS-485 / I/O / Ethernet, apply the IP plan.
- 5
SAT and alarm tests
Verify values against local readings, test every alarm and command end to end.
- 6
Handover and support
Hand over configuration backups, point table and as-built documents; train operators.
Valore per il cliente
- One view of all subsystems instead of separate vendor consoles
- Alarms reach the right person by SMS, email or messaging apps
- Reliable trend data for optimisation and fault diagnosis
- Abnormal conditions seen early, before they become failures
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