Grove - 2-coil interlock relay / impulse relay

Grove - 2-coil interlocking relay

Description

This module is based on a 2-coil interlock relay. Unlike the ordinary relay, this impulse relay does not require a continuous power supply to maintain the state, only a rising/falling pulse is required to change the working state. Even the power supply can be removed when the working state does not need to change, making this module especially suitable for low power consumption projects. It is compatible with Arduino, ESP, Raspberry Pi etc.

Features

• Energy efficiency: coils do not need to be constantly powered, helping to reduce power consumption in application circuits
• Double switch: single-sided stable and latching type available
• Grove unit socket: The product ensures "plug and play" and can be used in a variety of applications
• High sensitivity: Up to 150 mW
• High switching capacity: 125VA/90W

Application

• Industrial sorting and counting systems
• Power supply units
• HVAC, anti-condensation and cooling systems
• Automatic car wash systems
• Commercial coffee machines
• Automatic food preparation equipment

Specifications for

What are impulse relays?

Relays are common electromechanical devices in circuits and are available in two versions: latching or non-latching. Impulse relays retain their last switching position even after a complete power failure, regardless of whether they are single or double coil types.

Single coil impulse relays use only one coil to set or reset the switching position, but require both positive and negative voltages. When a positive voltage is applied, current flows in one direction and sets the relay to the set state (i.e. the relay switch is closed). When a negative voltage is applied, the direction of current flow reverses and places the relay in the reset state (i.e. the switch is open).

A dual coil impulse relay, on the other hand, uses only one positive voltage but requires two power supplies or drivers. This type of relay has a set coil and a reset coil. When the set coil is energized, the relay switches to the set state. Conversely, when the reset coil is energized, the relay switches to the reset state. However, both coils are never energized at the same time.

What is Grove?

Grove facilitates connection, experimentation and simplifies the prototyping process. No jumpers or soldering are required. More than 300 Grove modules have been developed to cover a wide range of applications and fulfill a variety of requirements. Not only the hardware is open source, but also the software. 

Parts list

• 1x Grove - 2-coil interlock relay
• 1x Grove cable