Linear actuator VK Product features Constant positioning times under fluctuating loads Solid metal housing Up to four auxiliary position switches possible Maintenance-free gearbox Wide selection of valve adapters Overview The VK series of compact actuators are deployed in practically all fields of industry to perform sensitive adjustments to small or smoothly operating valves of all types of systems requiring stroke lengths up to 20 mm. The robust construction, the metal housing made of die-cast zinc and an aluminium alloy that offers protection class IP65 and the extremely compact design ensure these valve actuators are the right solution even in harsh operating environments as well as confined spaces. When fitted with an optional position indicator (Open/Closed) these compact valve actuators are ideally suited for use in industrial furnace and combustion engineering applications. A diverse range of adapters ensure they can be easily mounted onto the valves. Product features & Overview Agromatic Regelungstechnik GmbH Stukenbrocker Weg 38 33804 Oerlinghausen Germany Tel. +49 5202 9739-0 Fax +49 5202 9739- e-mail: info@agromatic.de 81
Product details Product details VK housing Housing and hood made of corrosion-resistant die-cast zinc Stroke unit housing made of corrosion-resistant, die-cast aluminium Coated with silicon-free paint Colour: RAL 7032 Pebble Grey One cable entry M20x1.5 Two cable entries M16x1.5 Protection class to DIN EN 60529 IP65 (actuator), IP54 (stroke unit) - Custom colours - Sealed with clear coating material and corrosionpreventative wax to improve corrosion resistance - Electric anti-condensate heater (helps prevent build-up of condensate in the actuator) Motor Single-phase AC synchronous motor with permanent magnet, reversible 230 V ± 10%, 50/60 Hz ± 5% ON time 100% duty cycle on request Short start/stop times Insulation class B to VDE 0530 Synchronous motors maintain speed and constant positioning times irrespective of the load - DC motor - Custom voltages - Custom frequencies GEARBOX Spur gearing with straight-toothed steel gears Robust, maintenance-free Permanently lubricated gears Self-lubricating sintered bronze bearing Encapsulated version STROKE UNIT Max. stroke: 20 mm Positioning force 1000 N CONTROLS Open/close signals - Additional potential-free switching contacts - Electronic position controller ESR-NK (integrated in actuator) AMBIENT TEMPERATURE -15 C to +60 C 0 C to +60 C when utilizing electronic position controller ESR-NK - Up to +80 C, duty cycle S3-50% - Down to -40 C ANGLE OF ROTATION LIMITED BY SNAP-ACTION POSITION OFF SWITCH Two limit switches All travel-dependent switches actuated by infinitely adjustable control cams CO switches with silver-plated contacts Switch connections routed to terminal strip Max. switching capacity: 2.5 A, 0 V AC Option: - Switches with gold-plated contacts MANUAL OPERATION (OPTIONAL) Using a handwheel it is possible to manually adjust the position of the output shaft and valve. Position switch-off setting is retained during manual operation. Handwheel remains motionless during electrical operation. Options Other voltage/frequency Other ambient temperature range Handwheel Additional auxiliary position switches Custom control cams Electronic position controller ESR-NK Anti-condensate heater Components to UL standard 82 ELECTRICAL CONNECTION Screw-type terminals Depending on the version it is possible to retrofit between one to four additional auxiliary position switches Installation Adapter ensures straightforward coupling to valve Mounting adapter for all valve types
Order details Device type Positioning force Stroke Positioning time Details about valve envisaged (data sheets, drawings) Operating voltage/frequency Desired options Information to preset position switches Or order number Desired valve, where applicable Product details VK 83
Dimensions Dimensions VK SCHEMATIC DIAGRAM STANDARD AC DN 15 20 32 40 50 G G 1/2" G 3/4" G 1/2" G 1 1/4" G 1 1/2" G 2" L 85 95 105 120 130 150 V1 43 48 53 66 70 80 V2 35 35 42 S 27 32 41 50 58 70 84