Industrial Energy Monitoring System

Why a Plant Total Tells You Nothing

Most factories monitor energy at the utility meter — a single number for the whole site. That's like running a business with one bank balance and no ledger. You know the total, but you cannot attribute it, so you cannot act on it. When the bill rises 8% you have no way to tell whether it was the new compressor, a failing motor, a shift pattern change, or the tariff.

Industrial loads make this worse than it sounds. A manufacturing plant's consumption is dominated by motors, and motors do not fail politely — they draw more current for months first. A compressor running 4% less efficiently than at commissioning costs real money every hour it runs, and no site-level meter will ever show it to you. Nor will it show you that your maximum demand peak is set by two machines starting within the same 15-minute window, which is the cheapest penalty on an Indian industrial tariff to design out.

Tech OVN's industrial energy monitoring system puts a Class 0.5S meter on every distribution board and every major motor feeder — circuit-level measurement that turns energy from an overhead line item into a cost you can attribute, forecast and reduce.

Integration: What Actually Talks to What

On an industrial site the energy monitoring system is never the only system. There is a PLC on the line, usually a SCADA above it, sometimes an MES or ERP that wants consumption against a work order, and increasingly a BMS for the utility block. A meter that only speaks one protocol forces a gateway into the data path, and every gateway is a licence, a configuration file and a thing that fails at 2 a.m.

Titan speaks all of the following natively, with no converter hardware:

• Modbus RTU over RS485 — the default for a PLC, SCADA or local historian. Titan can act as a slave or as a bus master polling other devices.
• BACnet MS/TP over the same RS485 port — selected instead of Modbus RTU at commissioning, because RS485 is a single physical bus and carries one protocol at a time.
• Modbus TCP on port 502 and BACnet/IP over Ethernet or WiFi — the same register map and the same measurements, over the network instead of a serial pair.
• MQTT to any broker you configure — AWS IoT, Azure IoT Hub, HiveMQ, Mosquitto or your own — TLS-secured, for a cloud or in-house analytics pipeline.
• HTTP / HTTPS push or raw TCP/IP push of a JSON instant frame to an endpoint you nominate, when you would rather the meter talk to you than be polled.
• An on-device REST interface for provisioning and commissioning only — WiFi setup, transport selection, RS485 role, OTA and status reads. Bulk interval data comes over Modbus, BACnet or MQTT, not REST.

Modbus and MQTT run at the same time, so a local SCADA and your cloud can read the same meter without contending for it. Every one of these paths works without a Tech OVN server: Modbus and BACnet are local and need no internet connection at all, MQTT publishes wherever you point it, and the push transports post to your endpoint. The platform is a convenience, not a dependency.

The full Modbus register map, the MQTT topic scheme and command reference, the JSON schemas and worked decode examples are published openly — with runnable Python — so your engineers can build and test the integration before raising a PO.

How Many Meters Does a Factory Need, and Where

The most common deployment mistake is metering everything at once. The second most common is metering only the incomer and concluding that monitoring does not work.

1. 1

   Start at the incomer

   One meter on the main gives you the site total, your true maximum demand profile and your power factor against the tariff. This alone tells you whether you have a penalty problem, which is usually the fastest payback on the whole project.

2. 2

   Then the three biggest motors

   Compressors, chillers and the largest process drives. In most plants these three categories are the majority of the motor load, and they are where degradation and bad sequencing hide.

3. 3

   Then one meter per production line

   This is the step that converts energy data into something operations will actually use, because it produces kWh per unit rather than kWh per month.

4. 4

   Then DG sets and shared utilities

   Generators, pumps, lighting and HVAC for the utility block. By this point the heavy consumers have revealed themselves and you are metering to confirm rather than to discover.

Because catalogue meters have no minimum order quantity, this can genuinely be done in stages — one meter, then four, then thirty — rather than as a single capital project. The energy meter sizing calculator will pick the CT rating for each point, and Titan Audit can survey a running plant with clamp-on split-core CTs first if you want evidence before committing to permanent meters.