Relays are electrical switches that use an electromagnet to open and close contacts. They are used in a variety of applications, from controlling lights to powering motors. The 14 pin relay is a type of relay that is commonly used in industrial applications. In this article, we will discuss the wiring diagram of a 14 pin relay and how to use it in your projects.
What is a 14 pin relay?
A 14 pin relay is a type of relay that has 14 pins for connecting wires. It is commonly used in industrial applications due to its high reliability and durability. The 14 pin relay is also known as a base mount relay, as it is mounted on a base that can be easily attached to a surface or rail.
The 14 pin relay consists of an electromagnet, contacts, and a mechanical switch. When a current is applied to the electromagnet, it attracts the contacts and closes the switch. When the current is removed, the contacts return to their original position and the switch opens.
Wiring diagram of a 14 pin relay
The wiring diagram of a 14 pin relay consists of 14 pins that are numbered from 1 to 14. The pins are arranged in two rows, with seven pins in each row. The pins in the first row are numbered from 1 to 7, while the pins in the second row are numbered from 8 to 14.
The wiring diagram of a 14 pin relay is as follows:
| Pin No. | Description | Connection |
| 1 | Common (C) | Connected to power source |
| 2 | Normally Closed (NC) | Connected to load |
| 3 | Normally Open (NO) | Connected to load |
| 4 | EOC (End of Conversion) | Not used in all relays |
| 5 | Input (IN) | Connected to control signal |
| 6 | Input (IN) | Connected to control signal |
| 7 | Input (IN) | Connected to control signal |
| 8 | Common (C) | Connected to power source |
| 9 | Normally Closed (NC) | Connected to load |
| 10 | Normally Open (NO) | Connected to load |
| 11 | Input (IN) | Connected to control signal |
| 12 | Input (IN) | Connected to control signal |
| 13 | Input (IN) | Connected to control signal |
| 14 | Not Connected (NC) | Left unconnected |
How to use a 14 pin relay
To use a 14 pin relay, you need to connect the required wires to the appropriate pins. Here’s how to do it:
- Connect pin 1 to the power source.
- Connect pin 2 to the load that you want to control with the normally closed contact.
- Connect pin 3 to the load that you want to control with the normally open contact.
- If your relay has an EOC pin, leave it unconnected.
- Connect pins 5, 6, and 7 to the control signal that will activate the relay.
- Connect pin 8 to the power source.
- Connect pin 9 to the load that you want to control with the normally closed contact.
- Connect pin 10 to the load that you want to control with the normally open contact.
- Connect pins 11, 12, and 13 to the control signal that will activate the relay.
- Leave pin 14 unconnected.
FAQs
What is the difference between a normally open and normally closed contact?
A normally open contact is a contact that is open when the relay is not energized. When the relay is energized, the contact closes. A normally closed contact is a contact that is closed when the relay is not energized. When the relay is energized, the contact opens.
Can I use a 14 pin relay to control a motor?
Yes, you can use a 14 pin relay to control a motor. You need to connect the power supply to the common (C) pins, and the motor to the normally open (NO) or normally closed (NC) pins, depending on your application. Make sure to use a relay that can handle the voltage and current of your motor.
What is the maximum current that a 14 pin relay can handle?
The maximum current that a 14 pin relay can handle depends on the specific model of the relay. You should check the datasheet of the relay for the maximum current rating. Generally, 14 pin relays can handle currents up to 10A.
Can I use a 14 pin relay with a microcontroller?
Yes, you can use a 14 pin relay with a microcontroller. You need to connect the control signal from the microcontroller to the input (IN) pins of the relay. Make sure to use a relay that is compatible with the voltage and current levels of your microcontroller.
What is the lifespan of a 14 pin relay?
The lifespan of a 14 pin relay depends on various factors such as the quality of the relay, the environment it is used in, and the load that is connected to it. Generally, 14 pin relays can last for several years if used correctly.
