The Allen Bradley 700 HR is a series of industrial relays that are designed to provide reliable and efficient control of motors, pumps, and other heavy-duty machinery. These relays are widely used in the manufacturing, automotive, and other industrial sectors due to their durability and high performance. In this article, we will be discussing the wiring diagram for the Allen Bradley 700 HR relay and its various components.
Components of Allen Bradley 700 HR Relay
The Allen Bradley 700 HR relay consists of several components that work together to provide efficient control of machinery. These components include:
| Component | Description |
|---|---|
| Coil | This is the electromagnetic coil that generates the magnetic field required for switching the contacts. |
| Contacts | These are the switches that are controlled by the coil and are used to make or break the connection between the input and output circuits. |
| Terminal Block | This is the component that provides the necessary connections between the input and output circuits. |
| LED Indicator | This is the light that indicates whether the relay is on or off. |
Now let’s take a closer look at each of these components.
Coil
The coil in the Allen Bradley 700 HR relay is responsible for generating the magnetic field that is required to switch the contacts. When current flows through the coil, it generates a magnetic field that attracts the contacts, causing them to make or break the connection between the input and output circuits.
The coil can be connected to either AC or DC power depending on the application. If AC power is used, it is important to ensure that the relay is rated for the correct voltage and frequency.
Contacts
The contacts in the Allen Bradley 700 HR relay are the switches that are controlled by the coil. These switches can be either normally open (NO) or normally closed (NC) depending on the application.
When the coil is energized, it attracts the contacts, causing them to close and complete the circuit between the input and output terminals. When the coil is de-energized, the contacts spring back to their original position, breaking the connection between the input and output circuits.
Terminal Block
The terminal block in the Allen Bradley 700 HR relay provides the necessary connections between the input and output circuits. It consists of several screw terminals that can be used to connect the relay to the power source, load, and control signals.
It is important to ensure that the correct terminals are used for each connection and that the connections are tightened securely to prevent any loose connections that could lead to electrical arcing or damage to the relay.
LED Indicator
The LED indicator in the Allen Bradley 700 HR relay provides a visual indication of the relay’s status. When the relay is energized, the LED will light up, indicating that the contacts are closed and the circuit is complete. When the relay is de-energized, the LED will turn off, indicating that the contacts are open and the circuit is broken.
Wiring Diagram for Allen Bradley 700 HR Relay
The wiring diagram for the Allen Bradley 700 HR relay is as follows:
The wiring diagram consists of several components that are connected together to provide efficient control of machinery. Let’s take a closer look at each of these components.
Control Voltage
The control voltage is the voltage that is used to energize the coil of the Allen Bradley 700 HR relay. This voltage can be either AC or DC depending on the application.
It is important to ensure that the control voltage is correct for the relay and that the correct polarity is observed when connecting the control voltage to the terminals on the relay. Failure to observe correct polarity could damage the relay or prevent it from functioning correctly.
Input Circuit
The input circuit of the Allen Bradley 700 HR relay consists of the control voltage and any control signals that are used to activate the relay. The control signals can be either AC or DC depending on the application and must be connected to the correct terminals on the relay.
It is important to ensure that the correct terminals are used for each connection and that the connections are tightened securely to prevent any loose connections that could lead to electrical arcing or damage to the relay.
Output Circuit
The output circuit of the Allen Bradley 700 HR relay consists of the load and any other electrical devices that are controlled by the relay. The load can be either AC or DC depending on the application and must be connected to the correct terminals on the relay.
It is important to ensure that the correct terminals are used for each connection and that the connections are tightened securely to prevent any loose connections that could lead to electrical arcing or damage to the relay.
Frequently Asked Questions
What is the Allen Bradley 700 HR Relay?
The Allen Bradley 700 HR relay is an industrial relay that is designed to provide reliable and efficient control of motors, pumps, and other heavy-duty machinery.
What are the components of the Allen Bradley 700 HR Relay?
The Allen Bradley 700 HR relay consists of several components including the coil, contacts, terminal block, and LED indicator.
What is the function of the coil in the Allen Bradley 700 HR Relay?
The coil in the Allen Bradley 700 HR relay is responsible for generating the magnetic field that is required to switch the contacts.
What is the function of the contacts in the Allen Bradley 700 HR Relay?
The contacts in the Allen Bradley 700 HR relay are the switches that are controlled by the coil. These switches can be either normally open (NO) or normally closed (NC) depending on the application.
What is the function of the LED indicator in the Allen Bradley 700 HR Relay?
The LED indicator in the Allen Bradley 700 HR relay provides a visual indication of the relay’s status. When the relay is energized, the LED will light up, indicating that the contacts are closed and the circuit is complete. When the relay is de-energized, the LED will turn off, indicating that the contacts are open and the circuit is broken.
What is the proper way to connect the Allen Bradley 700 HR Relay?
The Allen Bradley 700 HR relay should be connected according to the wiring diagram provided with the relay. It is important to ensure that the correct polarity is observed when connecting the control voltage and that the correct terminals are used for each connection in the input and output circuits.
What is the load in the Allen Bradley 700 HR Relay?
The load in the Allen Bradley 700 HR relay is the electrical device that is controlled by the relay. The load can be either AC or DC depending on the application.
Conclusion
The Allen Bradley 700 HR relay is a reliable and efficient industrial relay that is widely used in the manufacturing, automotive, and other industrial sectors. Understanding the wiring diagram and the various components of the relay is crucial for ensuring proper installation and operation of the relay. By following the guidelines provided in this article, you can ensure efficient control of your machinery and prevent any damage or failures that could lead to costly downtime.
