echnical data sheet LH4A.. Linear actuators for operating air control dampers and slide valves in ventilation and air-conditioning systems For air control dampers up to approx. m Actuating force 5 ominal voltage AC/DC 4 V Control: Open-close or -point Lenght of stroke up to max. 6,, or mm, adjustable in steps of mm Overview of types ype Stroke Weight LH4A6 Up to max. 6 mm, adjustable in steps of mm 4 g LH4A Up to max. mm, adjustable in steps of mm 445 g LH4A Up to max. mm, adjustable in steps of mm 48 g LH4A Up to max. mm, adjustable in steps of mm 55 g echnical data Electrical data ominal voltage AC 4 V, 5/6 Hz DC 4 V Power supply range AC/DC 9.... 8.8 V Power consumption In operation At rest For wire sizing.5 W @ nominal force.5 W VA Connection Cable m, x.75 mm Functional data Actuating force 5 @ nominal voltage Stroke See «Overview of types» Direction of stroke Reversible with switch resp. Running time LH4A6 LH4A// 9 s / 6 mm 5 s / mm Sound power level <5 db (A) Safety Protection class III Safety extra-low voltage Degree of protection IP54 in any mounting position EMC CE according to 89/6/EEC Mode of operation ype (to E 67-) Rated impulse voltage.8 kv (to E 67-) Control pollution degree (to E 67-) Ambient temperature range... 5 C on-operating temperature 4... 8 C Ambient humidity range 95% r.h., non-condensating (to E 67-) Maintenance Maintenance-free Dimensions / Weight Dimensions See «Dimensions» on page Weight See «Overview of types» www.belimo.com -LH4A.. en v..6 Subject to changes /
LH4A.. Linear actuators AC/DC 4 V, 5 Safety notes Product features Accessories Manual override Stroke adjustment High functional reliability! he actuator is not allowed to be used outside the specified field of application, especially not in aircraft or any other form of air transport. Assembly must be carried out by trained personnel. Any legal regulations or regulations issued by authorities must be observed during assembly. 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 rotary supports and coupling pieces available as accessories must always be used if lateral forces are likely. In addition, the actuator must not be tightly bolted to the application. It must remain movable via the rotary support (refer to «Assembly notes»). If the linear actuator is exposed to severely contaminated atmosphere, appropriate precautions must be taken on the system side. Excessive deposits of dust, soot etc. can prevent the gear rack from being extended and retracted correctly. If not installed horizontally, the gear disengagement pushbutton may only be actuated when there is no pressure on the gear rod When calculating the required actuating force, the specifications supplied by the damper or slide valve manufacturers (cross section, design, installation site), and the air flow conditions must be observed. If a rotary support and/or coupling piece is used, losses in the actuation force are to be expected. 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. Manual operation is possible with the pushbutton (the gearing latch remains disengaged as long as the pushbutton is pressed or detented). he stroke of the gear rack can be adjusted on both sides in increments of mm by means of mechanical end stops. he actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached. Electrical installation Description Data sheet Mechanical accessories Rotary support to compensate lateral forces, type Z-DS - Z-LH..A.. Coupling piece, type - Z-LH..A.. Mechanical limiter set, yp Z-AS - Z-LH..A.. otes Connection via safety isolating transformer!! Other actuators can be connected in parallel. Please note the performance data! Wiring diagrams Open-close control Connection takes priority -point control Direction of stroke / -LH4A.. en v..6 Subject to changes www.belimo.com
LH4A.. Linear actuators AC/DC 4 V, 5 Dimensions [mm] Dimensional drawings 75 4.5 65. 66 94 ype Max. Stroke A B LH4A6 6 9.5 4. LH4A.5 64. LH4A.5 64. LH4A 4.5 464. 67 B A Assembly notes Application without lateral forces Application with lateral forces Caution If a rotary support and/or coupling piece is used, losses in the actuation force are to be expected.! he linear actuator is screwed directly to the housing at three points. Afterwards, the head of the gear rod is fastened to the moving part of the ventilation application (e.g. damper or slide valve). he coupling piece with the internal thread () is connected to the head of the gear rod. he rotary support (Z-DS) is screwed to the ventilation application. Afterwards, the linear actuator is screwed to the previously mounted rotary support with the enclosed screw. Afterwards, the coupling piece, which is mounted to the head of the gear rod, is attached to the moving part of the ventilation application (e.g. damper or slide valve). he transverse forces can be compensated for to a certain limit with the rotary support and/or coupling piece. he maximum permissible swivel angle of the rotary support and coupling piece is, laterally and upwards. www.belimo.com -LH4A.. en v..6 Subject to changes /
7749-.C LH..A. / LH4A-SX.. / LH4A-MF.. / LH4A-MP.. / LHV-D-MP... A x Ø max. 8mm mm mm B ± mm Z-DS Z-DS 4.5 Z-DS 5.5 www.belimo.com M-LH..A.. v. 7.9 / 4
LH4A-SR. / LHASR.. A x Ø max. 8mm B ± Z-DS Z-DS 4.5 5.5 / 4 M-LH..A.. v. 7.9 www.belimo.com
LH..A.. / LH4A-SR. / LH4A-SX.. / LH4A-MF.. / LH4A-MP.. / LHV-D-MP.. / LHASR.. L L L AC 4 V / DC 4 V S S S...% LH4A.. LH4A-S.. AC... 4 V! L L L L S S S S S S S S S LHA.. LHA-S.....% AC 4 V / DC 4 V Y U DC V DC V Y U DC V MP 5 5 LH4A-SR.. LH4A-SX.. LH4A-MF.. LH4A-MP.. LHV-D-MP.. AC V L SG..4 Y U 5 DC... V DC... V 5 LHASR.. www.belimo.com M-LH..A.. v. 7.9 / 4
LH..A..P Z-P 6 mm 5 mm 4...6 mm ype 45-6...8 mm ype 45-4 8... mm ype 45-6 5 max 4 m 4 / 4 M-LH..A.. v. 7.9 www.belimo.com