The ability to control a pump remotely over a long distance is now available using Teleterm M3 Radio RTUs. The system comprises two Teleterm M3 Radio RTUs each housed in a weatherproof housing with a built-in PSU. One unit is at the (local) remote control end with all the I/O dedicated to control inputs and pump feedback statuses. The other is at the pump (remote) side with all the I/O dedicated to control outputs and pump feedback inputs. The built-in radio allows up to 20 km line of sight communication between the two sets of controls, which allows easy plug-and-play operation with only the wiring of the power supply and the control circuits required. An optional HMI can be provided to do the control of the pump and to indicate statuses. The on-board Ethernet port also allows connection to an existing scada system thus saving on additional hardware. Other features include:
• A comms link indication to ensure the system is up and running.
• Alarm logging can be included so that statuses can be recorded for historical purposes.
• The speed of the pump can be controlled as the unit includes both a 4-20 mA input and a 4-20 mA output.
The low power consumption of the system makes it suitable for use in a solar powered option if required and a battery can be included to cover the event of a mains power failure. Water quality as part of environmental responsibility is a key element to triple bottom line reporting with water licensee operators needing to provide data for licensing authorities and compliance data for reporting. Omniflex has tackled the challenges for this type of remote monitoring application and has dealt with a number of key issues. The following benefits also make the solution ideal for other remote control pump applications:
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