Waste Water Treatment

Overview

In recent years, environmental monitoring business with deep and environmental requirements of the situation, monitoring capability is not strong, the level of monitoring hysteresis, monitoring equipment and other issues of aging gradually exposed, has become a constraining the development of the important factors of environmental monitoring. Environmental monitoring development and reform is urgently needed.

Challenge

Advances in low-cost sensors, as well as communications, are enabling a move to continuous monitoring for many applications. This entails in-situ sensors combined with local processing and communications for logging, processing, storing, and communicating data to Environmental Monitoring Data Center. Citect SCADA system is connected to outstations for water/waste water monitoring. The outstations are equipped with controllers or RTUs. The communication is based on Modbus and have been changed from radio to 4G.

Key needs for Pump Station:

• Robust Design: Work stable in harsh environment with strong humidity, high / low working temperature range. 

• More Function: PPP, Enhanced Modbus Gateway

• Better Service: Provide reliable and secure data transmission in order to be monitor remote RTU in real time. 

Solution

On this application, customer use one connection for programming the PLC connected to the RS232 side of NR300. Another SCADA Server is used to read the data from PLC which connected to the RS232 side of NR300. During this time, we developed "PPP" connection mode on 4G cellular connection, in most of carriers only support DHCP mode to request IP address. And also developed Enhanced Modbus Gateway feature, which allow 5 Modbus Masters communicating simultaneously against a Modbus slave. 

Solution Advantage

- Saving Costs

NavigateWorx's NR300 helps engineers monitor real-time operation of the machines, response to faults with shortened time, and plan for preventive maintenance, saving both manpower and costs significantly.

- Reliable Network Communication

NR300 router provides reliable low latency communications between PLC and center.

- Working In Harsh Environment

With NR300, now it’s flexible enough with its strong and high EMC level design, it could get all equipment connected and have internet access to be online for remote visitors all the time.

Customer_Feedback

We now installed NR300 in 53 pump stations and all is working perfect! NR300 is a good product to this type of application.