Elevator bistable switch

Types of elevator bistable switch

An elevator bistable switch is a type of electrical switch used in elevators to control various functions. It is a bistable switch, meaning it has two stable states and can be used to control circuits that operate in two different states. An elevator switch is used to control the elevator's movement, floor selection, door opening and closing, and other functions. Below are the types of elevator bistable switches:

• Toggle Switch

  A toggle switch is an elevator elevator bistable switch that controls the elevator in two different states. It is a mechanical switch that changes its electrical connectivity when the switch is pushed. It has a lever or bat that moves between different positions. The toggle switch is commonly used in elevators because it can be used to control heavy electrical loads. It is also very reliable and has a long lifespan. The toggle switch has a bistable state because it can stay in any position until it is switched by the user.

• Lift Call Switch

  This type of elevator switch is found on the landing of the elevator. It is used to call the elevator to a specific floor. The lift call switch has two positions: an up position and a down position. It controls the elevator in two different states. The lift call switch is very easy to use and will provide the correct feedback.

• Key Switch

  A key switch is a type of elevator switch that requires a key to change the position. It is often used in elevators that need restricted access to control the switching of the key. The key switch is very reliable and offers a high level of security. It can easily be installed and maintained, and it will provide audible and visible feedback when activated.

• Push Button Switch

  Push button switch is an elevator bistable switch that users will push to activate a change in the state of the switch. The switch is very easy to use and will provide visual feedback. It can be used for various applications and has a long lifespan. The switch is often used on the elevator control panel to select floors or request door opening.

Function and feature of elevator bistable switch

Bistable switches have two stable states. This means that the switch does not need a constant power supply to stay in one of the two states. Elevator switches have two stable states corresponding to the elevator going up or down. The elevator switch will be in one of the two states until it is toggled to the other state.

The main features of the elevator switch include:

• UP and DOWN elevator switch:

  The elevator switch will have the lifts going-up, and down indicators. The indicator lights up when the lift is in that state and helps users know the lift's current state. The indicator is also helpful when the lift is calling to the floor where users are waiting.

• Momentary action:

  The momentary elevator switch acts as a toggle switch. The switch only stays in one of the two states as long as it is pressed. Momentary switches are used for emergency calls or in situations where the elevator should only be called with a button push.

• Self-resetting:

  Some elevator switches have a self-resetting feature. They automatically reset to the UP switch after the elevator has reached its destination. This makes the elevator ready for the next call.

• Key switch:

  The key elevator switch is important for ensuring the security of the elevator. It is used to control the elevator's state. In some cases, it can be used to override other switches. It requires a key to change the elevator's states, so only authorized individuals will control the elevator. It is also useful for maintenance.

• Heavy duty:

  Heavy-duty elevator switches are durable and long-lasting. They can withstand frequent toggling in high-traffic elevator applications. They provide reliable and consistent performance.

• Illuminated switch:

  The illuminated elevator switch has a light embedded in the switch. The light makes the switch easier to see, especially in low-light areas. It helps users locate the switch and press it to call for the elevator.

Scenarios of Elevator Bistable Switch

Bistable switches have vast applications in different industries. The elevator bistable switch is used in elevators and lifts, and its application is discussed below.

• Control Panel

  Bistable switches are used in control panels to monitor and control various functions and operations. The switches provide stable and reliable control for the smooth operation of the elevator. The control panel has multiple switches that provide different functions, from calling the lift to selecting floors.

• Floor Selection

  The floor selection switch allows passengers to select the floor where they want to go. The elevator will only stop at the selected floor when it is pressed. The switch has two stable positions, and it represents the requested floor and the elevator moves to the requested floor.

• Open/Close Door Control

  Bistable switches control the opening and closing of the elevator doors. The switches have a stable output, which allows the door to remain open or close until a request is made to change the state. The switch improves the efficiency of the elevator and enhances passenger safety.

• Emergency Stop

  Emergency stop switches are installed in the elevator car and in the control room. The emergency stop switch is a bistable switch that stops the elevator from moving. It is used during emergency situations to prevent the elevator from moving and ensure safety.

• Lift Call Buttons

  Bistable switches are used as lift call buttons. When the lift call button is pressed, the switch moves to the lift call position and remains there until the elevator arrives. The lift will only respond if the lift call button is pressed in a multi-lift system.

• Door Open/Close Buttons

  Once the elevator arrives at the desired floor, the doors will open or close as requested. The open/close buttons are bistable switches that remain in a stable position until a request is made to change the state.

How to Choose Elevator Bistable Switch

Choosing a bistable elevator switch for a particular application requires careful consideration of several factors to ensure optimal performance and reliability. Here are some of them:

• Application Requirements

  The first consideration is what the specific requirements of the application are. This includes things like load capacity, control logic, and power supply. The elevator switches should be compatible with the technical necessities of the elevator system.

• Reliability and Durability

  The elevator switches will be installed in an area that is very busy and has a lot of traffic. So, choose a switch that is durable and can be relied on. Look for options that have a robust construction. Also, consider switches that have a long operational life and can withstand the frequent actuation cycles.

• Quality of the Build Material

  The materials used to make the bistable switches will affect their performance and longevity. Look for switches that have high-quality materials. The materials should be resistant to corrosion, wear, and tear. This will ensure that the switch remains functional for a long time.

• Electrical and Mechanical Specifications

  It is important to consider the electrical and mechanical specifications of the elevator push button switch. This includes things like contact rating, switching voltage, current, and force travel distance. Choose a switch that fulfills the electrical requirements of the elevator system.

• Environmental Conditions

  The switches for elevators are usually installed in different environmental conditions. This can be extreme temperatures, humidity, and dust. Choose a bistable switch that can function in the environmental conditions that are present. The switches should be able to work optimally without any problems.

• Supplier Reputation

  Always buy elevator switches from a reputable and well-known supplier. Check their reviews, customer service, and industry experience. A good supplier will offer quality products, technical support, and timely deliveries.

elevator bistable switch Q&A

Q1: What is the switch for in elevators?

A1: The switch is used to control the elevator door open and close. It is also used to control the movement of the elevator cars in the up and down direction.

Q2: How does a bistable switch work?

A2: A bistable switch has two stable states. The switch will remain in any of the two states until it is changed to the other state. It needs a pulse signal to change its state.

Q3: What is the difference between a unilocal and a bistable switch?

A3: A unilocal switch has one stable state and an unstable state, while a bistable switch has two stable states.

Q4: What are elevator push buttons called?

A4: Elevator push buttons are called momentary switches. Momentary switches provide a temporary connection when they are pressed.

Q5: What are the key components of an elevator control system?

A5: The key components of an elevator control system are a power supply, a control panel, lift motor, and elevator switches. Others are cables, pulleys, and elevator bistable switches.