Technical Review: Omron H3Y-2 DC24 30S Solid State Timer - Selection Guide & Specs
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Overview: Solving Industrial Timing Challenges
In industrial automation, precise timing control is critical for process efficiency and equipment protection. The Omron H3Y-2 DC24 30S solid state timer addresses the common challenge of eliminating mechanical timer failures in harsh environments while providing accurate ON-delay timing functions. This compact timer offers reliable operation for applications requiring precise 30-second delay intervals in control systems, machinery sequencing, and process automation.
Technical Specifications Analysis
The Omron H3Y-2 DC24 30S represents a sophisticated solid-state timing solution with advanced features for industrial applications. Unlike traditional electromechanical timers that suffer from contact wear and mechanical fatigue, this solid-state design ensures millions of operations without degradation.
| Specification | Value | Description |
|---|---|---|
| Model | H3Y-2 DC24 30S | Omron solid-state timer with 30-second range |
| Supply Voltage | 24 VDC | Single-phase full-wave rectified allowed |
| Time Setting Range | 0.5 to 30 seconds | Continuously adjustable within range |
| Output Configuration | DPDT (2C/O) | Double Pole Double Throw relay contacts |
| Contact Rating | 250 VAC 5A (resistive) | Maximum switching capacity |
| Power Consumption | 1.5W max (Relay ON) | Low energy operation |
| Reset Time | 100ms max | Fast reset capability |
| Operating Temperature | -10°C to +55°C | Industrial temperature range |
| Mounting | 8-pin plug-in socket | Compatible with DIN rail mounting |
| Time Accuracy | ±0.5% of setting | High precision timing |
The solid-state construction eliminates moving parts, making the Omron H3Y-2 DC24 30S ideal for applications with vibration, shock, or frequent cycling requirements. The 24VDC power supply makes it compatible with standard industrial control voltages and PLC systems.
Industrial Applications
This timer excels in numerous industrial scenarios:
- Motor Start Sequencing: Prevents simultaneous motor starts that could overload power systems
- Process Control Delays: Provides precise timing between manufacturing steps
- Safety Interlocks: Creates time delays for safety circuit verification
- Conveyor Systems: Controls material handling timing and spacing
- Pump Control: Prevents rapid cycling and water hammer effects
- Lighting Control: Manages sequential lighting in industrial facilities
The solid state timer technology ensures reliable operation in environments with dust, moisture, or temperature extremes where mechanical timers would fail prematurely.
Buying Considerations
When selecting the Omron H3Y-2 DC24 30S for your application, consider these critical factors:
- Voltage Compatibility: Ensure your control system provides stable 24VDC power. The timer accepts single-phase full-wave rectified input but requires clean DC power for optimal performance.
- Load Requirements: Verify your load current doesn't exceed the 5A contact rating. For inductive loads (motors, solenoids), derate to 2-3A maximum to ensure contact longevity.
- Timing Range: The 0.5-30 second range suits applications requiring short to moderate delays. For longer timing requirements, consider other models in the H3Y series with extended ranges.
- Mounting Configuration: The 8-pin plug-in design requires compatible sockets (PYF08A for DIN rail). Ensure you have appropriate mounting hardware for your control panel.
- Environmental Conditions: While rated for industrial environments, avoid direct exposure to water, oil, or corrosive chemicals. Consider protective enclosures for harsh applications.
- Wiring Considerations: Use appropriate gauge wire (typically 14-18 AWG) and follow proper industrial wiring practices. The DPDT configuration allows flexible NO/NC contact arrangements.
For complex timing requirements or multiple timing functions, explore Omron's broader time delay relay product range.
Frequently Asked Questions
Q1: Can the Omron H3Y-2 DC24 30S be used with AC loads?
Yes, the timer contacts are rated for 250VAC at 5A resistive load. However, for inductive AC loads like motors or solenoids, you should derate the contacts to approximately 2-3A to account for inrush currents and ensure long contact life.
Q2: What happens if power is interrupted during timing?
The Omron H3Y-2 DC24 30S features automatic reset when power drops below 10% of rated voltage. When power is restored, the timing cycle restarts from zero. This is a standard ON-delay timer behavior - for applications requiring timing to continue after power interruption, you would need a different timer type with memory function.
Q3: Can I adjust the timing range beyond 30 seconds?
No, the H3Y-2 DC24 30S has a fixed 0.5-30 second range. For longer timing requirements, Omron offers other models in the H3Y series with ranges up to 30 minutes or 10 hours. You would need to select a different model number with your required timing range. Always verify the specific timing range when purchasing industrial timers for your application.
