The G2R-1-SND DC24V(S) is a relay manufactured by OMRON. Below are its specifications, descriptions, and features:
Specifications:
- Model: G2R-1-SND DC24V(S)
- Type: Power Relay
- Contact Configuration: SPDT (1 Form C)
- Contact Rating:
- Resistive Load: 16A @ 250V AC, 16A @ 30V DC
- Inductive Load: 8A @ 250V AC, 8A @ 30V DC
- Coil Voltage: 24V DC
- Coil Power Consumption: 0.9W (Standard)
- Operate Time: ≤15ms
- Release Time: ≤5ms
- Electrical Life: 100,000 operations (min.)
- Mechanical Life: 10,000,000 operations (min.)
- Insulation Resistance: 1,000MΩ (min.) @ 500V DC
- Dielectric Strength:
- Between contacts: 1,500V AC (50/60Hz for 1 min)
- Between coil and contacts: 2,500V AC (50/60Hz for 1 min)
- Ambient Operating Temperature: -40°C to +70°C
- Ambient Humidity: 5% to 85% (non-condensing)
- Vibration Resistance: 10 to 55Hz, 1.5mm double amplitude
- Shock Resistance: 1,000m/s² (approx. 100G)
Description:
The G2R-1-SND DC24V(S) is a compact, high-capacity power relay designed for industrial and automation applications. It features a single-pole double-throw (SPDT) contact configuration, making it suitable for switching moderate to high-power loads.
Features:
- High Switching Capacity: Capable of handling up to 16A resistive loads.
- Long Electrical & Mechanical Life: Ensures durability in demanding environments.
- Compact Size: Space-saving design for efficient PCB mounting.
- Reliable Performance: High dielectric strength and insulation resistance.
- Wide Operating Temperature Range: Suitable for harsh industrial conditions.
- Solder Pin Termination: Ensures secure PCB mounting.
This relay is commonly used in control panels, power supplies, and automation systems where reliable switching is required.
(Note: Always refer to the official OMRON datasheet for detailed technical information.)
# Technical Analysis of OMRON G2R-1-SND DC24V(S) Relay
## 1. Practical Application Scenarios
The OMRON G2R-1-SND DC24V(S) is a compact, single-pole power relay designed for industrial and commercial applications requiring reliable switching of moderate loads. Key use cases include:
- Industrial Automation: Used in control panels for switching motors, solenoids, and actuators in PLC-based systems. Its 10A switching capacity at 250VAC makes it suitable for machinery control.
- HVAC Systems: Employed in heating, ventilation, and air conditioning units to manage compressor and fan circuits due to its high dielectric strength (5kV).
- Power Distribution: Integrates into relay modules for load switching in power supplies and UPS systems, ensuring stable operation under 24VDC coil voltage.
- Safety Circuits: Functions in emergency stop systems and interlock mechanisms, where fail-safe operation is critical.
The relay’s sealed construction (S suffix) provides resistance to dust and moisture, making it ideal for harsh environments like manufacturing plants and outdoor installations.
## 2. Common Design-Phase Pitfalls and Avoidance Strategies
Pitfall 1: Incorrect Load Matching
- Issue: Overloading contacts beyond 10A resistive or 5A inductive can cause premature wear or welding.
- Solution: Verify load type (resistive/inductive) and derate current ratings for inductive loads. Use snubber circuits for inductive spikes.
Pitfall 2: Poor PCB Layout
- Issue: Inadequate trace width or excessive heat near the relay can degrade performance.
- Solution: Follow OMRON’s recommended PCB footprint, ensure proper creepage distances, and avoid placing heat-generating components nearby.
Pitfall 3: Coil Voltage Instability
- Issue: Voltage drops below 70% of nominal (24VDC) may prevent relay actuation.
- Solution: Implement a regulated power supply with sufficient current capacity (coil consumes ~200mW).
Pitfall 4: Lack of Protection Circuits
- Issue: Back-EMF from inductive loads can damage the relay or driver circuit.
- Solution: Add freewheeling diodes or transient suppressors across the coil.
## 3. Key Technical Considerations for Implementation
- Contact Material: AgSnO₂ contacts offer superior arc resistance for inductive loads compared to AgCdO.
- Switching Speed: Operates within 15ms (max) for coil energization; ensure timing aligns with system requirements.
- Environmental Ratings: -40°C to +70°C operating range suits most industrial applications but avoid condensation.
- Mechanical Life: 10 million operations (no load) ensures longevity in frequent-switching scenarios.
For optimal performance, adhere to OMRON’s datasheet specifications and validate thermal and electrical margins during prototyping.