Integrated Mini-Vacuum Pumps With ASR (Air Saving Regulator), LEM Series
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LEM Series: Mini-Module pressure  No more unnecessary consumption of compressed air. certified quality management system All industrial vacuum functions integrated into the mini-module Efficient communication for easy setting, production and maintenance.

Vacuum Pumps A mini-module for each application: A COMPLETE LINE with vacuum switch, display and setting without vacuum switch 4 basic configurations, see adjacent illustrations 2 levels : 60% and 85% vacuum. 3 standard nozzle diameters : 1, 1.2 and 1.4 mm. Air suction flow : up to 92 Nl/min. Other options on request. with blow-off (LEM__X__SVA) without blow-off (LEM__X__RVA) EFFICIENT COMMUNICATION For settings and troubleshooting, a simple and complete interface provides reliable communication as shown in the illustration. blow-off / vacuum indicators manual blow-off / vacuum overrides 3...

LEM Series: Compact Functions pressure The COVAL Compact Integration Technique Traditional venturi vacuum pumps must be completed with optional components necessary to function: solenoid valves, pressure regulator, vacuum switch, blow-off circuit, electronic control, etc. One can see the advantages of compact integration of these functions into a sole mini-module vacuum pump that becomes all inclusive. The above illustration shows the excellence of Coval in this perspective: each function type to be integrated has been redesigned, optimized and miniaturized to fit its place in the...

INTEGRATED FUNCTIONS ➊ 3.5 bar Pressure regulator ➋ Solenoid valve "vacuum" ➌ 3.5 bar optimized Venturi ➍ Clog-free silencer ➎ Electronic vacuum switch ➏ Integrated electronics ➐ Solenoid valve "blow-off" ➑ Blow-off flow adjustment (ASR) Air Saving Regulator Optimized "Regulator+Venturi" Combination The LEM vacuum pumps, which integrate an ASR "venturi regulator" combination, maintain ideals that COVAL values greatly: reducing both compressed air consumption and noise generation. Regardless of pressure supplied by the compressed air network, the integrated regulator feeds the venturi at 3.5...

LEM Series: Dialog Intelligence blow-off / vacuum manual overrides blow-off / vacuum indicators "object gripped" indicator display of adjustment mode selected real-time vacuum- level display vacuum and hysteresis threshold adjustment vacuum switch blow-off: flow adjustment adjustment-mode selection: vacuum and hysteresis threshold dialog panel electronic mini-PCB Intelligent Dialog Completes the Integration of Compact Functions The previous pages have shown the attraction of integrating all necessary functions into a single compact module for optimal control of vacuum handling. This...

Efficient Communication at Each Step 1-SETTINGS Settings are easily made at both the first installation and all successive iterations. • Setting of the Vacuum threshold: the vacuum level at which the vacuum switch emits the "object gripped" signal. Visual display of this setting can be observed on the LED Scale. • Hysteresis setting: the reduction in the vacuum level at which the "object gripped" signal is turned off. • Blow-off flow rate setting: adjustable blowoff control through screw setting or manual valve override while testing. Visual surveillance of functioning during each phase:...

REF. COMPOSED OF AN ASSEMBLED ISLAND OR COMPONENTS FOR REF. COMPOSED OF A STAND-ALONE MODULE LEM air supply P=4.5 to 7 bar, outside tube 0 6 mm ^ ^ VACUUM LEVEL VENTURI CHARACTERISTICS 1- Maximum vacuum level This level results from the venturi mixer's profile: - 85% max. vacuum is optimum for airtight products. - 60% max. vacuum is optimum for porous products. 2- Nozzle diameter It reflects the air suction flow, but also the power consumption. Thus it must be chosen for the specific need, without excess. nozzle diameter. Time to create vacuum (seconds) for a volume of 1 liter Airtight...

Simple vacuum pump without blow-off: LEM__X__RV_ • nly one control signal. O • C vacuum control valve. N VACUUM SWITCH / DIALOG PANEL Electronic vacuum switch with display and setting • Separate settings for vacuum threshold and hysteresis. • Real-time vacuum level display. • "Gripped product" indicator. • M8 connectors for inputs and outputs.Switching output and analogic output. • Electrical protection: IP65. Vacuum pump with controlled blow-off: LEM__X__SV_ • control signals. 2 • C vacuum control valve. N • Blow-off controlled by external signal (NC control valve ) with adjustable flow...

LEM Series: Mounting Options 1- Stand-alone modules SIDE MOUNTING The side mounting is the simplest of all: 2 protruding screws. 2 connecting screws or bolts, Ø 4mm FRONT MOUNTING screw 4mm Dia. Individual mounting plate with 4 fixing screws For mounting from front, please order the necessary kit in addition to the ejector module: Kit for mounting from front : 1 plate + 4 screws individual mounting plate over DIN rail with 4 fixing screws DIN rail mounting kit: 1 plate/clip + 4 screws FRONT MOUNTING For this purpose, the module must first be equipped with an individual DIN installation...

Integrated Vacuum Switch • Adjusting range: -1 to 0 bar. • Precision: ± 1, 5 % of the range. • Hysteresis: from 0% to 100% (adjusted by potentiometer). • Output threshold: 1 x switching output, NO. • Analogic output: from 1 V DC over the measuring range. • Switching power: 125 mA PNP. • Threshold state display : 1x LED green • Power supply: 24 V DC (regulated ± 10%) • Current draw: < 20 mA. • Protection: against the inversions of polarity. Integrated Silencer • Sound level: approximately 68 dBA. • Clog free silencer. Electrical Connections MODULES WITHOUT VACUUM SWITCH 24 V DC vacuum inputs...

Located in the southeast region of France, COVAL conceives, manufactures and globally distributes high performance, advanced vacuum automation components and systems for industrial applications in all branches. The references of COVAL can be found in several industrial sectors (Packaging, Automotive Industry, Plastic, Graphic, Aeronautic…) where vacuum handling is important for high efficiency and productivity. COVAL is an ISO 9001: V2015 certified company which offers innovative solutions integrating reliable and optimized components with intelligent functionalities. The focus is to...