Electropneumatic Positioner Type 3730-4 with PROFIBUS PA communication

Product description:

SAMSON´s 3730 Positioner Series includes the intelligent Type 3730-4 Positioner, which, like all the other positioners from this product family, ensures an ultra-fast control loop with excellent control effectiveness to meet the requirements of any process application.

The arbitrary mounting position and display readable in any direction make it possible to attach the positioner to nearly any type of linear and rotary valve.

Thanks to its rotary pushbutton and LC display, the positioner is easy to operate.

A powerful microprocessor enables the Type 3730-4 Positioner to communicate over PROFIBUS PA.

In addition, the Type 3730-4 offers various functions and parameters to optimize the control such as an adjustable tight-closing function, various characteristics, adjustable transit times, limitation of the travel range, etc.

The Type 3730-4 Positioner has four initialization modes which provide maximum user friendliness. These automatic initialization modes allow the positioner to adapt itself optimally to the friction conditions and signal pressure demand of the control valve.

The positioner can be initialized either by pressing a key on the positioner, or over the bus by using the start-up methods implemented in the DD or by using the SAMSON specific serial interface and software for setting and starting up the positioner.

For cost-optimized predictive maintenance, the positioner provides a wide range of device-specific and valve-specific diagnostic and status messages. These messages are recorded and evaluated directly in the device.

The Type 3730-4 automatically generates classified diagnosis and status reports intended for further processing.

There are two different diagnostic levels:

* Standard diagnostic information: operating time counter, process supervision, temperature sensor, recording of the last 30 alarms, travel counter, ...

* Enhanced diagnostic information: data logger, histograms, cycle counter, Y=f(x) diagram, final position and hysteresis tests, ...

Optionally, the Type 3730-4 can be equipped with an integral solenoid valve with SIL 4 approval whose task is to force the valve to move into its fail-safe position, with an adjustable inductive limit switch, and a binary input for floating contacts.

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