Allen Bradley is a well-known brand in the field of automation, specifically in manufacturing and packaging industries. Its products are highly reliable, efficient, and easy to use, making it a top choice among engineers and technicians.
One of Allen Bradley’s most-used products is the start-stop switch, which is used to control the operation of a machine. In this article, we will discuss the wiring diagram of the Allen Bradley start-stop switch, including its components, functions, and how to connect it properly.
Components of Allen Bradley Start Stop Switch
The Allen Bradley start-stop switch consists of two main components: the start button and the stop button. Both buttons are enclosed in a single unit and have a rectangular shape. The start button is usually colored green, while the stop button is colored red. There is also an element in the switch called a contactor, which is responsible for switching the motor on and off.
The contactor is made up of three sets of contacts: normally open, normally closed, and auxiliary. Each set of contacts has its own function and wiring configuration. The normally open contacts are used to control the power flow from the source to the motor, while the normally closed contacts are used to control the power flow from the motor to the source. The auxiliary contacts are used to send signals to other devices, such as indicator lights or alarms.
Wiring Diagram of Allen Bradley Start Stop Switch
The wiring diagram of the Allen Bradley start-stop switch may seem complex, but it is actually quite simple once you understand the basics. The following diagram shows the basic wiring configuration of the switch:
| Terminal Label | Wire Color | Function |
| L1 | Black | Power Input |
| L2 | White | Power Input |
| T1 | Red | Motor Connection 1 |
| T3 | Blue | Motor Connection 2 |
| T2 | Orange | Motor Connection 3 |
| 1 | Green | Start Button NC |
| 2 | Yellow | Start Button NO |
| 3 | Black with White Stripe | Stop Button NC |
| 4 | Red with White Stripe | Stop Button NO |
It is important to note that the wiring configuration may vary depending on the specific model of the switch and the motor being used. It is recommended to consult the manufacturer’s manual or a professional electrician for proper wiring instructions.
How to Connect Allen Bradley Start Stop Switch
Connecting the Allen Bradley start-stop switch is a straightforward process. The following steps should be followed:
Step 1: Power Supply Connection
Connect the black and white wires from the power supply to the L1 and L2 terminals of the switch, respectively.
Step 2: Motor Connection
Connect the three wires from the motor to the T1, T3, and T2 terminals of the switch, following the wiring configuration specified in the motor’s manual.
Step 3: Button Connection
Connect the wires from the start and stop buttons to their respective terminals in the switch, following the wiring configuration shown in the diagram.
Step 4: Contactor Connection
Connect the auxiliary contacts of the contactor to other devices, such as indicator lights or alarms, as required.
FAQ
What is the function of the Allen Bradley start-stop switch?
The Allen Bradley start-stop switch is used to control the operation of a motor in a machine or equipment. The start button is used to initiate the motor operation, while the stop button is used to halt the motor.
What are the main components of the Allen Bradley start-stop switch?
The main components of the Allen Bradley start-stop switch are the start button, stop button, and contactor. The start button initiates the motor operation, the stop button halts the motor, and the contactor is responsible for switching the motor on and off.
What is the wiring configuration of the Allen Bradley start-stop switch?
The wiring configuration of the Allen Bradley start-stop switch may vary depending on the specific model and motor being used. However, the basic wiring configuration consists of black and white wires for power input, three wires for motor connection, and wires for start and stop buttons.
How do I connect the Allen Bradley start-stop switch?
To connect the Allen Bradley start-stop switch, follow the steps outlined in this article, which include power supply connection, motor connection, button connection, and contactor connection. It is recommended to consult the manufacturer’s manual or a professional electrician for proper wiring instructions.
