TNS Asia Pacific Pte Ltd

Overview

In America and Europe, electric power is provided by a number of private power plants distributed over wide areas. Optimising distribution and transmission to meet market demand is a challenge as power suppliers need to monitor data usage and combine the data for power generation, distribution and transmission.

The customer in this application supplies power and provides other management services to western states in America. The company provides leadership and management of power supply options and continues to implement increasingly sophisticated power management techniques and innovative technologies, giving the utilities in the region the ability to offer low cost power options at stable prices.

System Requirements

-  Long range wireless transmission (satellite, GPRS, WCDMA, microwave, etc.) over wide territories.
-  Transmission of data in a low bandwidth network environment.
-  Self-monitor connection status, when the connection fails, system reboots to restore communication.

Solution

The customer used a current transformer together with a meter to measure how much electricity has been used. When current flows through the current transformer, the meter transmits a pulse output, Moxa's ioLogik E2212 is used to keep track of how much energy has been used. The ioLogik E2212's active report function helps deliver event messages automatically and send the counter value back to the central site every few seconds for generation and distribution references.

Such remote monitoring system is often installed in remote locations, making maintenance both challenging and costly. To ensure the communication system is stable, ioLogik's watchdog timer was used to monitor the connection status. If the communication fails, the ioLogik E2212 will send an output to an external relay timer that shuts the system down for five minutes before restarting the system.

In addition to active messaging and the watchdog timer, another major benefit is Moxa’s simple and intuitive IF-THEN-ELSE Click&Go control logic, which helps users reduce programming time from days to minutes, keeping maintenance costs minimal.

Related Products

MOXA ioLogik E2212 Active Ethernet I/O with 8 digital inputs, 8 digital outputs and 4 configurable DIO