Omron LY2-D 24VDC General Purpose Relay Technical Guide
The Omron LY2-D 24VDC general purpose relay is a plug-in electromechanical relay built for industrial control, machine automation, and panel wiring applications. It is part of the Omron LY family and is designed for users who need a practical 24 VDC relay with dependable contact switching and integrated coil suppression.
This relay has an 8-pin plug-in structure, DPDT contact configuration, and a rated carry current of 10 A. Its 24 VDC coil makes it suitable for modern control systems, especially PLC panels, relay interface modules, machine logic circuits, and low-voltage automation environments. The “D” designation is important because it indicates coil suppression, which helps reduce voltage spikes generated when the relay coil is de-energized.
Core Technical Characteristics
The Omron LY2-D 24VDC general purpose relay uses two poles, DPDT contacts, silver alloy contact material, and a transparent case. Its plug-in terminal format allows easier replacement during maintenance compared with soldered relays. It is normally used with compatible 8-pin relay sockets, including DIN rail or surface-mount socket options. This makes it practical for control cabinets where technicians need fast replacement without rewiring the entire circuit.
Why Coil Suppression Is Useful
When a DC relay coil is switched off, the collapsing magnetic field can create a reverse voltage spike. In sensitive automation systems, that spike may affect PLC outputs, transistor drivers, sensors, or nearby electronic circuits. The LY2-D 24VDC version helps manage this issue with built-in coil suppression, making it a strong option for cleaner DC control circuits.
Typical Applications
This relay is often used in conveyor controls, pump panels, machine safety auxiliaries, alarm outputs, signal conversion, HVAC control, and industrial interface circuits. Its DPDT layout allows one relay to switch two circuits at the same time, or to combine load switching with feedback signaling. In maintenance-heavy environments, the plug-in design reduces downtime because the relay can be removed from its socket without disturbing the panel wiring.
Selection Considerations
Before selecting this relay, confirm that the control circuit supplies 24 VDC and that the load does not exceed the relay’s current and voltage limits. Inductive loads should be reviewed carefully because motors, solenoids, valves, and contactor coils create electrical stress during switching. Socket compatibility should also be checked, especially when replacing an older relay in an existing panel.
For related Omron relay information, visit Omron.
Omron LY2-D 24VDC FAQ
What does the Omron LY2-D 24VDC general purpose relay do?
It allows a 24 VDC control signal to switch separate electrical circuits through DPDT relay contacts.
What is the benefit of the built-in coil suppression?
It helps reduce coil-generated voltage spikes when the relay turns off, protecting nearby control electronics.
Is this relay suitable for PLC output circuits?
Yes, it is commonly used with PLC output circuits when the coil voltage and output capacity are compatible.
Does it use a plug-in socket?
Yes. It is designed as an 8-pin plug-in relay and can be used with compatible Omron sockets.
Can the LY2-D 24VDC switch two circuits?
Yes. Its DPDT contact arrangement provides two independent changeover contacts.