Control systems Positioners and controllers
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TI-P707-02 CTLS Issue 3
SP8-10 Smart Positioner
Description The SP8-10 is an electronically configurable positioner with communication capabilities designed for mounting on pneumatic linear or rotary actuators. It features a small and compact design, a modular construction, and an excellent cost-performance ratio. Fully automatic determination of the control parameters and adaptation to the positioner allow for considerable time savings as well as optimum control behaviour. An I/P module with subsequent pneumatic amplifier is used to control the pneumatic actuator. The well-proven I/P module proportionally converts the permanent electrical set point signal from the CPU into a pneumatic signal used to adjust a 3/3-way valve. Dosing of the air flow for pressurizing or depressurizing the actuator is continuously adjusted. As a result, excellent control results are achieved. When reaching the set point, the 3/3-way valve is closed in centre position to minimize the air consumption. The pneumatic system can be supplied in four versions: for single acting and double acting actuators and each with the ‘fail-safe’ / ‘fail-freeze’ safety function. In addition to its input for the analogue position set point, the positioner is equipped with a digital input which can be used to activate control system functions in the device. A digital output allows you to output collective messages (alarms / faults).
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Applications The SP8-10 can be used with any actuator that conforms to NAMUR, this includes all of the following Spirax Sarco pneumatic actuators: BVA300 rotary PN9000 series PN1600 series TN2000 series PNS3000 and PNS4000 series
Materials Part
Material
Finish
Case - Anti-corrosive paint, Black Cover - Anti-corrosive paint to RAL9016
Case and cover
Die cast aluminium
Mouting kits
Stainless steel
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Follower pin cone
Nylon
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TI-P707-02 CTLS Issue 3
Page 1 of 7
SP8-10 Smart Positioner
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