CPUs handle acquisition, telemetry and control

Omniflex has a set of Maxiflex CPUs - the T2 - dedicated to data acquisition and telemetry applications.

Omniflex has a set of Maxiflex CPUs - the T2 - dedicated to data acquisition and telemetry applications.

They require no user programs when used for data acquisition or telemetry applications: the user simply plugs them in, connects field wiring and powers up.

All I/O is scanned automatically and I/O status assembled into a data interchange table (DIT).

The CPUs however can be programmed for control as well.

Other CPUs in the Maxiflex range offer IEC61131 programming with six languages standard and function blocks for PID suitable for dosing plant control.

The telemetry functions run automatically and independently of the control application so Scada systems can be acquiring data while control applications are running.

Maxiflex also supports remote programming service via its communications networks.

The system integrates the remote pump start/stop function with motor status feedback from pumps and level statuses directly to an annunciator panel.

There is no need for hard wiring of panel indicator lamps for stop/start run indication.

All status information can be displayed on the annunciator via a Modbus link.

The telemetry aspect of the remote control can be implemented on copper cable (screened twisted pair - instrument cables) up to 10km from the control centre.

Radio systems can be used for wireless applications where cable infrastructure is non existent.

GSM networks can also be used, with SMS for data transmission.

Maxiflex also supports redundant applications where on larger pumping stations, pumps run redundant with the control and monitoring application also redundant for maximum availability or service.

Typical Applications for Maxiflex are pump remote control, reservoir level control, pump station monitoring and control, dosing plant applications and flow meter monitoring.

Configuration is easy using a free Windows based software package called OmniSet and a serial cable available from Omniflex.

Simple selection of pull down options allows the user to configure the CPU completely.

This configuration includes the ability to create multidrop telemetry systems using the Omniflex Conet local area network up to 10km on twisted pair cable.

Maxiflex provides a very cost-effective solution to remote control applications and simplifies the field I/O systems by eliminating the need to write time consuming application programs for data acquisition or telemetry.

Should data acquisition also be required with the pump control, Maxiflex I/O systems cover analogue inputs, voltage, current, thermocouple, RTD and digital inputs, potential free and voltages up to 200V DC, series contact chains, and pulse inputs up to 50kHz.

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