Programmable sensor controller

June 2001 PLCs, DCSs & Controllers

The Trolex programmable sensor controller is a powerful and flexible device which is available in two versions.

The controller has up to eight analog or 16 digital inputs. User-interchangeable input cards available include:

* A range of current input signals, ie 4-20, 5-1000 mA.

* Voltage signal inputs.

* Thermocouple inputs.

* PT100 inputs.

* Semiconductor inputs.

* AC inputs for vibration monitoring.

* Bridge inputs for strain gauge inputs.

* Digital inputs.

Four output relays are provided for alarms. Any or all of the channels may be allocated to any or all of the output relays.

Datacomms available are RS232, RS485 or TTL, with a Modbus Protocol for scada monitoring or simple data download onto a PC into a spreadsheet. Each of the channels logs 22 500 data lines at user-defined intervals. Data history is also available on the PSC screen for local viewing.

Each input has two user-defined setpoints for alarming and/or tripping if required. The digital input cards may be set up for pulse counting, pulse interval, pulse frequency, slip frequency. Another option is the dual digital input with diode protection.

Trolex is a market leader in the manufacture and supply of a comprehensive range of high quality sensors and sensor processing equipment. The main areas of application are condition monitoring or alarm monitoring and protecting personnel, plant and machinery against abnormal or dangerous environmental conditions which may occur.

The products are used in safety-critical protection applications and therefore designed to high quality standards and are able to tolerate the most arduous industrial environments. Many of these applications are in electrically hazardous areas so most of its products are certified explosion-proof or intrinsically safe for use in potentially flammable atmospheres.

The PSC is being used more and more on longwall coalface applications, providing control and monitoring information to the surface of the mines via datacommunication and PLC systems.

Trolex SA

(011) 397 6958

[email protected]

www.trolex.com

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