1. Product Overview
The GEYA GRT6-B1 is a compact, electronic adjustable delay off time relay designed for various industrial and domestic applications. It features a single pole double throw (1NO1NC) output and is suitable for DIN rail mounting. The delay time can be conveniently set using the panel knobs, offering a wide range from 0.1 seconds to 10 days.
- High Performance: Delay settings are easily adjustable via panel knobs for intuitive operation.
- Function Mode: Supports Delay OFF (Function B) operation.
- Time Range: Adjustable from 0.1 seconds to 10 days, divided into 10 distinct ranges.
- Relay Status Indication: Equipped with LED indicators; a green light for power and a red light for working status.
- Compact Design: Ultra-small size, only 18mm width, designed for 35mm DIN rail mounting.
Figure 1: Front view of the GEYA GRT6-B1 Delay Off Time Relay, showing control knobs and LED indicators.
2. Safety Information
Please read this manual carefully before installation and operation. Failure to follow these instructions may result in equipment damage, personal injury, or death. Always observe local and national electrical codes.
- Installation and maintenance should only be performed by qualified personnel.
- Ensure power is disconnected before performing any wiring or maintenance.
- Verify correct voltage and current ratings before connecting the device.
- Do not operate the device in environments exceeding its specified operating conditions.
- Protect the device from moisture, dust, and extreme temperatures.
3. Product Dimensions
The GRT6-B1 relay features a compact design suitable for space-constrained installations. Refer to the diagram below for detailed dimensions.
Figure 2: Detailed dimensions of the GEYA GRT6-B1 relay in millimeters.
4. Installation and Wiring
4.1 Mounting
The GEYA GRT6-B1 is designed for standard 35mm DIN rail mounting. Ensure the rail is securely fastened and provides adequate space for ventilation and wiring.
4.2 Wiring Connections
Connect the power supply and load according to the wiring diagrams provided. The GRT6-B1 model features A1(+) and A2(-) for supply terminals, S for trigger terminal, and 15, 16, 18 for the 1SPDT output contacts (15-16 normally closed, 15-18 normally open).
Figure 3: Terminal layout and LED indicators for GRT6-A1 and GRT6-B1 models.
Figure 4: Example wiring diagrams for GRT6-A1/B1 (1SPDT) and GRT6-A2/B2 (2SPDT) models.
4.3 Installation Demonstration Video
Watch this video for a visual guide on connecting power and load to the GRT6-B1 relay.
Video 1: This video demonstrates the power connection, load access, time setting, and operation of the GEYA GRT6-B1 delay off time relay with a light bulb.
5. Operating Instructions
5.1 Function Mode (Delay OFF)
The GRT6-B1 operates in Delay OFF mode (Function B). In this mode, when input voltage U is applied, the relay contacts change state immediately and timing begins. When the delay time is complete, the contacts return to their shelf state. If input voltage U is removed before the delay is complete, the contacts return to their shelf state immediately. The trigger switch is not used in this function.
Figure 5: Timing diagrams for Delay ON (A) and Delay OFF (B) functions.
5.2 Time Setting
The delay time is set using two rotary knobs on the front panel: one for the time range and one for the percentage of that range.
- Adjust Time Range Knob: Select the desired time range (e.g., 10s, 1m, 1h, 1d, 10d).
- Adjust Percentage Knob: Fine-tune the delay time within the selected range by setting a percentage (e.g., 50% of 10s = 5 seconds).
For example, to set a delay of 5 minutes:
- Adjust the time range knob to '10m' (10 minutes).
- Turn the percentage knob to '50%' (50% of 10 minutes = 5 minutes).
Figure 6: Illustration of time setting using the time range and percentage knobs.
6. Technical Specifications
The following table details the technical specifications for the GEYA GRT6 series relays, including the GRT6-B1 model.
| Technical parameters | GRT6-A1/B1 | GRT6-A2/B2 | GRT6-At/Bt |
|---|---|---|---|
| Function | A:delay ON; B:delay OFF | ||
| Supply terminals | A1-A2 | ||
| Voltage range | AC/DC 24-240V (50-60Hz) | ||
| Burden | AC 0.7-3VA/DC 0.5-1.7W | AC max.6VA/1.9W | |
| Voltage range | AC 230V (50-60Hz) | ||
| Power input | AC max.6VA/1.3W | AC max.6VA/1.9W | |
| Supply voltage tolerance | -15%; +10% | ||
| Supply indication | green LED | ||
| Time ranges | 0.1s-10days, ON, OFF | ||
| Time setting | potentiometer | ||
| Time deviation | 10%-mechanical setting | ||
| Repeat accuracy | 0.2%-set value stability | ||
| Temperature coefficient | 0.05%/°C, at=20°C (0.05%/°F, at=68°F) | ||
| Output | 1×SPDT | 2×SPDT | 1×SPDT(del)+1SPDT(ins) |
| Current rating | 10A/AC1 | ||
| Switching voltage | 250VAC/24VDC | ||
| Min. breaking capacity DC | 500mW | ||
| Output indication | red LED | ||
| Mechanical life | 1×107 | ||
| Electrical life (AC1) | 1×105 | ||
| Reset time | max.200ms | ||
| Operating temperature | -20°C to +55°C (-4°F to 131°F) | ||
| Storage temperature | -35°C to +75°C (-22°F to 158°F) | ||
| Mounting/DIN rail | Din rail EN/IEC 60715 | ||
Figure 7: Technical specifications for GEYA GRT6 series time relays.
7. Troubleshooting
If the relay does not function as expected, consider the following common issues:
- No Power Indication (Green LED off): Check the power supply connections and ensure the voltage is within the specified range (AC/DC 24V-240V).
- Load Not Switching: Verify the load wiring. Ensure the load's voltage and current requirements do not exceed the relay's contact ratings (10A/AC1, 250VAC/24VDC). Check if the red LED indicates working status.
- Incorrect Delay Time: Re-check the settings on both the time range and percentage knobs. Ensure they are set according to your desired delay.
- Intermittent Operation: Inspect all wiring for loose connections. Ensure the operating environment is within the specified temperature and humidity limits.
If issues persist, consult a qualified electrician or contact GEYA customer support.
8. Maintenance
The GEYA GRT6-B1 relay is designed for reliable, long-term operation with minimal maintenance. Follow these guidelines:
- Cleaning: Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Inspection: Periodically inspect wiring connections for tightness and signs of wear or damage.
- Environment: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature aging or malfunction.
9. Warranty and Support
GEYA products are manufactured to high-quality standards and come with a standard warranty against manufacturing defects. For specific warranty terms, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official GEYA website. When contacting support, please have your product model (GRT6-B1) and purchase information available.
