1. Introduction
The Srliya GRT8 M1 is a versatile multifunctional delay time relay designed for various industrial and control applications. It features 10 distinct delay functions, allowing for precise timing control in systems such as lighting, heating, motor, and fan control. This relay is designed for easy installation on a 35mm DIN rail and operates across a wide AC/DC voltage range of 12V to 240V.
Key features include a wide time delay setting range from 0.1 seconds to 10 days, adjustable via a panel knob, and clear LED indicators for power and relay status.
2. Product Overview
The GRT8 M1 relay offers comprehensive timing solutions with its multiple functions. Its compact design ensures efficient use of space in control panels.
Image: The GRT8 M1 relay highlighting its multifunctional capabilities, including 10 types of delay functions such as delay on, delay off, and cycle delay.
Image: A close-up view of the GRT8 M1 relay, illustrating the LED indicators for relay status and the wide time delay setting range from 0.1 seconds to 10 days.
3. Specifications
| Parameter | Value |
|---|---|
| Rated Power Supply Voltage | AC/DC 12V~240V (50-60Hz) |
| Power Terminal | A1-A2 |
| Power Consumption | AC 0.09-3VA / DC 0.05-1.7W |
| Setting Method | Knob |
| Setting Accuracy | 10% |
| Power Indicator | Green LED |
| Delay Range | 0.1s - 10 days |
| Repeated Accuracy | 0.2% |
| Temperature Fluctuation Error | 0.05%/℃ (at = 20℃) |
| Output | 1 x SPDT, 250VAC/24VDC |
| Minimum Switching Power | 500mW |
| Output Relay Indication | Red LED |
| Mechanical Life | 1 x 107 operations |
| Reset Time | 200ms |
| Working Temperature | -20℃ ~ 55℃ |
| Mounting Method | 35mm DIN Rail |
| Mounting Altitude | ≤2000m |
| Weight | Approx. 75g (2.65 ounces) |
| Package Dimensions | 3.94 x 3.15 x 1.18 inches |
4. Setup
4.1 Mounting
The GRT8 M1 relay is designed for quick and secure installation on a standard 35mm DIN rail. Ensure the rail is properly secured within your control panel or enclosure.
Image: The GRT8 M1 relay shown mounted on a 35mm DIN rail, demonstrating its intended installation method.
4.2 Wiring Diagram
Connect the power supply and load according to the wiring diagram provided. Ensure all connections are secure and comply with local electrical codes.
Image: Detailed wiring diagram for the GRT8 M1 relay, illustrating connections for power (A1, A2) and output contacts (15, 16, 18).
Power Supply (Un): Connect AC/DC 12V~240V to terminals A1 and A2.
Output Contacts: The relay features a Single Pole Double Throw (SPDT) output. Terminals 15, 16, and 18 represent the common, normally closed (NC), and normally open (NO) contacts, respectively. Connect your load to the appropriate contacts based on your application's requirements.
5. Operating Instructions
5.1 Setting Delay Time and Function
The GRT8 M1 features a rotary knob on the front panel for setting the desired delay time and selecting the delay function. Refer to the markings on the relay for specific time ranges and function indicators.
Image: Top view of the GRT8 M1 relay, showing the rotary knobs used for setting the delay time and selecting one of the 10 delay functions.
Time Range Adjustment: Use the larger knob to select the base time range (e.g., 1s, 10s, 1m, 10m, 1h, 10h, 1d, 10d).
Percentage Adjustment: Use the smaller knob to fine-tune the delay time within the selected range (e.g., 10% to 100%).
Function Selection: The relay supports 10 types of delay functions, including but not limited to: delay on, delay off, and cycle delay. Consult the product's specific function codes (A, B, C, D, E, F, G, H, I, J) printed on the device for detailed operation of each mode.
5.2 LED Indicators
The relay is equipped with two LED indicators to provide visual feedback on its status:
Image: The GRT8 M1 relay with dimensions, clearly labeling the green power indicator and the red relay status indicator.
- Green LED (Power Indicator): Illuminates when the relay is powered on.
- Red LED (Relay Status Indicator): Illuminates when the output relay is activated (contacts 15-18 are closed).
6. Maintenance
The GRT8 M1 delay time relay is designed for reliable operation with minimal maintenance. Follow these general guidelines:
- Cleaning: Keep the relay clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Connection Checks: Periodically inspect all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent operation or damage.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature failure.
7. Troubleshooting
If the GRT8 M1 relay is not functioning as expected, consider the following troubleshooting steps:
- No Power (Green LED Off):
- Check the power supply voltage at terminals A1 and A2. Ensure it is within the AC/DC 12V~240V range.
- Verify that the power source is active and fuses/circuit breakers are not tripped. - Relay Not Activating (Red LED Off when expected):
- Confirm the delay function and time settings are correctly configured via the front panel knobs.
- Check the input signal (if applicable for the selected function) to ensure it is present.
- Inspect the load wiring connected to terminals 15, 16, and 18 for any disconnections or shorts. - Incorrect Delay Time:
- Re-verify the time range and percentage settings on the front panel knobs.
- Ensure the setting accuracy of 10% is accounted for in your application. - Intermittent Operation:
- Check for loose wiring connections.
- Ensure the relay is not exposed to excessive vibration or extreme temperatures.
If issues persist after performing these checks, contact customer support for further assistance.
8. Warranty and Support
Specific warranty details for the Srliya GRT8 M1 Multifunctional Delay Time Relay are typically provided at the point of purchase or within the product packaging. Please refer to your purchase documentation for warranty period and terms.
For technical support, troubleshooting assistance beyond the scope of this manual, or inquiries regarding replacement parts, please contact your vendor or the manufacturer directly. Ensure you have your product model number (GRT8 M1) and purchase details available when seeking support.
