echnical data sheet LR4A-SR Modulating rotary actuator for and -way control ball valves orque Nm Nominal voltage AC/DC 4 V Control: Modulating DC... V Position feedback: DC... V echnical data Safety notes Electrical data Nominal voltage AC 4 V, /6 Hz DC 4 V Power supply range AC/DC 9.... 8.8 V Power consumption In operation At rest For wire sizing W at nominal torque.4 W VA Connection Cable m, 4 x.7 mm Parallel connection Possible, note performance data Functional data orque (nominal torque) Min. Nm at nominal voltage Control Control Signal Operating range DC... V, typical input impedance kω DC... V Position feedback DC... V, max. ma (Measuring voltage ) Position accuracy ±% Manual override Gearing latch disengaged with pushbutton (temporary-permanent) Running time 9 s / 9 Noise level Max. db (A) (without the valve) Position indication Mechanical, add-on Safety Protection class III Extra low voltage Degree of protection IP4 in any mounting position EMC CE according to 89/6/EWG Mode of operation ype (to EN 67-) Rated impulse voltage.8 kv (to EN 67-) Control pollution degree (to EN 67-) Ambient temperature range... C Media temperature... C in control ball valve ( C with stem heating upon request) Non-operating temperature 4... 8 C Ambient humidity range 9% r.h., non-condensating (to EN 67-) Maintenance Maintenance-free Dimensions / Weight Dimensions See «Dimensions» on page Weight Approx. g! he rotary actuator has been designed for use in stationary heating, ventilation and air conditioning systems and is not allowed to be used outside the specified field of application, especially in aircraft or in any other airborne means of transport. It may only be installed by suitably trained personnel. All applicable legal or institutional installation regulations must be complied with. he switch for changing the direction of rotation may only be operated by authorized personnel. he direction of rotation must not be reversed in a frost protection circuit. he device may only be opened at the manufacturer's site. It does not contain any parts that can be replaced or repaired by the user. he cable must not be removed from the device. he device contains electrical and electronic components and is not allowed to be disposed of as household refuse. All locally valid regulations and requirements must be observed. www.belimo.com -LR4A-SR en v..7 Subject to changes /
LR4A-SR Modulating rotary actuator, AC/DC 4 V, Nm Product features Mode of operation Simple direct mounting he actuator is controlled by means of a standard control signal DC... V. It opens to the position dictated by this signal. he measuring voltage allows the damper position (... %) to be electrically indicated and serves as a follow-up control signal for other actuators. Straightforward direct mounting on the ball valve with only one screw. he assembly tool is integrated in the plug-on position indicator. he mounting position in relation to the ball valve can be selected in 9 steps. Adjustable angle of rotation High functional reliability Position feedback Adjustable angle of rotation with mechanical end stops. he actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached. Operation of the ball valve is optimised by a limiting ring. his ring reduces the angle of rotation from 9 to 9, i.e. will deviate from by approximately. V when the valve is closed. Accessories Description Data sheet Electrical accessories Auxiliary switch S..A.. - S..A.. Feedback potentiometer P..A.. - P..A.. Electrical installation Wiring diagram Standard connection Override control (frost protection circuit) Notes Connect via safety isolation transformer.! Parallel connection of other actuators possible. Note performance data. Direction of rotation switch is covered. Factory setting: Direction of rotation DC... V Control of controller Measuring voltage for reset signal DC... V c d Control of controller DC... V c d Rotary actuator Rotary valve Direction of rotation A AB = % A AB = % Modulating operation Dimensions [mm] Dimensional diagrams 7 84 R6 4 Further documentations Complete overview of actuators for water solutions Data sheets for ball valves Installation instructions for actuators and/or ball valves Notes for project planning (hydraulic characteristic curves and circuits, installation regulations, commissioning, maintenance etc.) / -LR4A-SR en v..7 Subject to changes www.belimo.com
R..A.. / LR..A.. / NR..A.. / SR..A.. 774-.D 4 Z M4 A A AB = % A AB = % B AB = % AB A AB B A AB = % www.belimo.com -R..A../LR..A../NR..A../SR..A.. v.. /
R..A.. / LR..A.. / NR..A.. / SR..A.. N L N L AC 4 V / DC 4 V S S S...% LR4A SR4A NR4A LR4A-S SR4A-S NR4A-S AC... 4 V N L L! N L L S S S S S S S S S...% LRA SRA NRA LRA-S SRA-S NRA-S AC 4 V / DC 4 V DC ()... V DC... V DC ()... V MP RC4A-SR LR(C)4A-SR NR(C)4A-SR SR4A-SR LR4A-MF NR4A-MF SR4A-MF LR4A-MP SR4A-MP NR4A-MP WORKS AC 4 V / DC 4 V V MF MF p MF MF / -R..A../LR..A../NR..A../SR..A.. v.. www.belimo.com
R..A.. / LR..A.. / NR..A.. / SR..A.. Z 764-.A A AB A B AB www.belimo.com -Z-R..A../LR..A../NR..A../SR..A.. v.. /