Project Overview
In a Data Center there were about 4-5 VFDs (Variable Frequency Drive) and they needed to be controlled and monitored using MQTT protocol.
Initial Situation
- VFDs were looped on RS485 Port and provided output in Modbus RTU (RS485) Protocol.
- The monitoring and control system that was cloud based only supported MQTT protocol
Customer Requirement
- Customer wanted to monitor and control VFDs data like Voltage, Current and Frequency from cloud.
- The VFDs work on Modbus RTU Protocol and Cloud API understands MQTT. Therefore, a direct exchange of data between them was not possible.
Solution Provided
- ProtoConvert suggested a Gateway in which we can get the data from all the VFDs on RTU and post it on MQTT Broker.
Note: Client had purchased MQTT Broker Subscription
- The customer’s monitoring system subscribed Parameter tags on MQTT Broker.
- With the help of ProtoConvert Gateway, customer could monitor and control Data Center’s VFD data via MQTT Broker.
- The customer’s monitoring system could send back commands to update the Parameters on MQTT Broker.
Result
ProtoConvert Gateway had subscribed to these Parameter Values and on change relayed the commands on Modbus RTU enabled VFDs.
