Electro pneumatic control valve positioner with Profibus PA communication
07 April 2010
The Samson Controls 3730 Series electro pneumatic control valve positioner with Profibus PA communication provides high quality air output capacity combined with optimum functionality and ease-of-operation. The 3730 is one of a range of Samson positioners, all of which are based on a common model platform. For example, the housing, travel pick-off system, pneumatic components as well as the fast PD controller are designed along the same lines in all positioners. As a consequence, the positioners benefit from the same high quality air output capacity. The only key differences occur in the electronic equipment and the features associated with it, such as ease-of-operation, functionality and diagnostic capabilities.
The Type 3730-2 and all higher versions come with the fully integrated valve diagnostics that supply the required information for predictive maintenance, without the need for additional software.
Alarms are indicated via the fault indication output and displayed as detailed error codes, either on the positioner’s large, easy-to-read display or using the serial interface and the TROVIS-VIEW software. The new Type 3730-4 with PROFIBUS-PA communication ties-in with the related models, such as Type 3730-3 with HART communication, the Type 3730-5 FOUNDATION Fieldbus Positioner with PID controller and LAS capability as well as the Type 3730-2 without communication capabilities.
All these models share the integrated microprocessor that enables simple, automatic start-up at the push of a button, as well as setting additional parameters, such as; split-range operation, tight-closing function, or selecting a saved characteristic. The Series Type 3730 family of positioners work continuously to keep your process running smoothly, yet only consume a small amount of power, while its range of functions is completed by limit switches, position transmitters and solenoid valves.
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