Elevator controler

Lark Elevators Down Collective Control Panel latest state of the art micro computer chip based, micro control with solid state relay of efficient & positive operation, the design to have self-diagnostic features & very advanced power saving features. (There is more option in this controller such as V3F, Automatic Rescue device, etc.)

• Call latching – communicates floor signals to the panel.
•  Displaying – shows current lift level, directional arrows, over load warning, service mode (all in alpha numeric display).
•  Animation – for door open and close.
• Can support alpha-numerical double-digit display
• A separate programmable font selection facility is available
• User friendly – easy to select desired floor, terrace, basement and so on.
• Multiple door open options available – double-door, multi open/ close option and so on.
• Supports duplex, triplex and quadraplex up to 32 floors.
• Attached with panel guard to protect the system from phase loop and voltage fluctuations with complete 3 phase voltage display.
• Intelligent algorithm to attend any calls within 10 seconds for standard configuration.
• Voltage detection – if there is high or low voltage fluctuation, the panel will not get switched on at all.
• Available for lifts of all KW ratings.
• ARD history display option.
• integrated with ARD for all types of geared & pm motors.
• supports ARD for single phase home lift.
• supports all operations including auto door, manual door, group collective etc.
• Output terminals are automatically short-circuited when motor is switched off in accordance with safety norms.
• VIP option, owners lock, fire man switch, overload detection & protection, gong bell integrated with annunciator and all other standard interface are available.
• Anti – jerk function that ensures gentle landing
• In-built voice annunciator as well as door open buzzer facility
• Preventer buffering of lift, even on failure of field switches
• In-built stabilizer option
• Automatic floor memory recall option
• Single magnet and door zone per floor for any number of floors
• Possible to have multiple car speed for various floors.
• All input and output are well protected from short circuit.
• User selectable fonts, voice, delay time and other features for each floor.
• Easy debugging design for efficient maintenance work.
• Dedicated power supply board enhances the reliability of product.
• regulated 24 volt 4 channel dc output for field and internal wiring.

 A R D

The Automatic rescue device works on the principle of powering and operating the Elevator Controller at rated Voltage to perform the Rescue operation. The Rescue device interfaces with the ES Drive which has a unique feature of “Low voltage DC operation” to operate the Elevator Motor with Low voltage Battery.

The Automatic rescue device comprises of three-phase space vector modulated inverter and a state of the art high frequency battery charger with four operating modes of charging.

During Mains power ON, it monitors the power and continuously charges the Batteries. In the event of power failure, the Rescue device will activate within the predetermined “response time”. The Powerful Inverter will produce and supply 3-Phase, 400V, sinusoidal power to the Controller. The Controller is now energized with 3-Phase power and will run the Motor in the Up direction at low speed and bring the Elevator to the immediate next floor and opens the door automatically. Upon opening the doors, the trapped passengers shall exit and the Rescue will shut the Inverter to prevent any further battery drain. When normal power resumes, the Smart Rescue will automatically switch over the Controller to Normal Operation.

Machine room less elevators (usually shortened to as M.R.L. or MRL) are a type of either traction or hydraulic elevator which do not require a machine room for the elevator.

Design

Traction elevators

Machine room less elevators do not have a fixed machine room on the top of the hoistway, instead the traction hoisting machine is installed either on the top side wall of the hoistway or on the bottom of the hoistway. The motor is installed using a permanent magnet which “sticks” the motor permanently and work with Variable Voltage Variable Frequency (VVVF) drive. Some of the hoisting machines are using gearless synchronous motors instead conventional induction motors. This design eliminates the need of a fixed machine room and thus saves much building’s space. Almost all the traction MRL elevators are gearless traction.

While the hoisting motor is installed on the hoistway side wall, the main controller is installed on the top floor next to the landing doors. This controller is situated behind a locked cabinet which have to be unlocked using a key for maintenance, repair or emergency purposes. Most elevators have their controller installed on the top floor but fewer elevators have their controller installed on the bottom-most floor. Some elevators (like those in Japan) may have the hoisting motor located on the bottom of the elevator shaft put, thus it is called as “bottom drive MRL” elevator. Some elevators (like Otis and Schindler) have the controller cabinet installed within the door frame instead on the wall to save space.

Like normal traction elevators, machine room less elevators uses the conventional steel cord ropes used as the hoisting cables. Some elevator brands (such as Otis and Schindler) are using flat steel rope belts instead of conventional ropes. Manufacturers using these technology claimed that with flat steel belt ropes, it saves much space on the hoistway and to allow a minimum size of the hoisting sheave. With flat steel belts also allows 30% lighter than conventional steel ropes.

Most machine room less elevators are used for low to mid rise buildings. Machine room less elevators in mid-rise buildings usually serves up to 20 floors.

There is a very rare design in which the traction machine is positioned under the elevator cab. An example of this design was used on the SchindlerMobile elevators introduced by Schindler in the late 1990s.

Hydraulic elevators

Like the traction version, machine room less hydraulic elevators do not have a fixed room to house the hydraulic machinery. The machinery, which includes the pump, is installed on the elevator pit. The controller is located on a wall near the elevator and usually on the bottom floor. A benefit of machine room less hydraulic elevators is saves construction time, space, and cost.

Examples of machine room less hydraulic elevators are Otis HydroFit and thyssenkrupp Endura MRL. In California MRL Hydraulic elevators are not sold.

MRL hydraulic elevators have their machinery installed on the elevator pit. This is a Bucher Hydraulics MRL hydraulic machinery.

When we look at an elevator, it is hard to imagine that there are so many different types available out there. The elevator itself was invented many years ago originally as a pully machine operated by slave labour. Over the years, technology advanced thanks to a man called Elisha Otis who secured the cars and prevented them from falling mid journey. In the second part of this blog series, we’re going to go over geared and gearless traction elevators…

Traction Elevators: These are a type of elevator which is lifted by ropes. These ropes pass over a wheel that is attached to an electric motor located above the shaft of the elevator itself. Their main use is mid and high rise jobs and they are able to travel at a much fast speed than hydraulic elevators. A counter weight is employed in order to offset the weight of the cab and any people inside it, thus making the elevator more efficient. This is due to the motor not having to move as much overall weight.

Geared Traction Elevator: In these designs, a gearbox is found attached to the motor that is used to operate the wheel and thus, move the ropes. They are able to travel at speeds of 500 feet per minute, with a minimum travel distance of 250 feet. In terms of maintenance and energy, a geared traction elevator is considered average compared to other designs.

We are engaged in offering Elevator Telescopic and Center opening   Doors that available in either the fixed sidelight or the full breakout configuration. These telescopic sliding doors provides smooth, quiet operation, and are ideal for spaces that require optimum opening width in all applications.

Features:

• Best designs
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Elevator Doors

We are known as one of most prominent manufacturers and suppliers of elevator doors which are known for their robust construction and longer durability. Fabricated from high quality raw material, these doors are widely demanded in market for their corrosion resistant properties. We also offer a customized range of elevator doors as per client specifications.

The range of elevator doors comprises of:

We are recommended by the clients for offering a wide assortment of Stainless Steel Elevator Doors. The products we offer are highly acclaimed by the clients for their availability in different sizes and specifications. Moreover, we assure our clients to deliver these products at industry leading prices.

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We design and develop a magnificent array of MS telescopic door which are widely popular in market these days due to their unique features. These find their application in elevators placed at various malls, metro stations, apartments and multi storey buildings.

Features:

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Quality is the hallmark of our company, to meet tremendous quality standards we are presenting a wide assortment of Glass Elevator Doors. The products we offer are known for their precision and durability. One can get these products in committed time frame that too after testing their quality under rigorous measures.

Features:

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To meet the needs and requirements of the clients, we are offering a wide assortment of Swing Elevator Doors. The products we offer are highly demanded by the clients for their precise use. Moreover, we assure our clients to deliver these products at industry leading prices.

Features:

• Durability
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We are devotedly engaged in offering an extensive range of Lift Cabin. The offered cabins are designed and manufactured using high quality basic material and modern tools & equipment in tandem with the current market standards. Our offered cabins are efficiently used at different places such hotels, residential buildings, offices, etc. Apart from this, we offer these cabins to our clients in customized options.

Feature:

• Swift services
• Steel wall construction
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• Stainless steel fixtures

The product line has been designed to offer a wide range of finishes, on a strong steel wall structure.Wide range of handrails and bumper rails  Stainless steel skirting, satined or polished Half wall/full wall/panel mirrors “Style” glass, entirely framed with satin stainless steel Modular car top railing 700mm and 1100mm high can be applied on each side of the cabin roof EN-81 compliant trap door with a special locking mechanism Low decibel exhaust or blowing fan Folding seat to be fixed on walls or embedded with stainless steel grit 180-240 niche
Anti-drumming to make the cabin sound proof