1. Bubuka
The GEYA GRT8-EC Dual Function Time Relay is designed for precise timing control in various industrial and domestic applications. This device offers both "on Delay" and "off Delay" functions, making it versatile for controlling industrial equipment, lighting systems, heating elements, motors, and fans. Its compact 1-MODULE (18mm) design allows for convenient DIN rail mounting.

2. Spésifikasi
| Fitur | Spésifikasi |
|---|---|
| Ngaran produk | GRT8-EC Dual-function Time Relay |
| Ngaran Brand | GEYA |
| Nomer modél | GRT8-EC |
| Téori | Relay waktos |
| Fungsi | On Delay or Off Delay Timer |
| Sumber Daya | AC |
| Voltage Pilihan | AC220V/DC24V, AC380V, or AC/DC24V~240V |
| Dipeunteun Ayeuna | 10A (AC1) |
| Kontak Kaluaran | 1SPDT (1NO1NC) |
| Frékuénsi dipeunteun | 50/60Hz |
| Rentang Waktos | 0.1s - 10 days (8 ranges) |
| Kontak Beban | Daya Lemah |
| Ngajaga Fitur | disegel |
| Pamasangan | 1-MODULE 18mm, DIN rail mounting |
| Sertifikasi | CE, RoHS, CB |

3. Setup jeung Wiring
The GRT8-EC time relay is designed for DIN rail mounting. Ensure proper power supply and load connections as per the wiring diagrams provided below. Always disconnect power before installation or maintenance.

3.1 Terminal Connections:
- A1, A2, A3: Pasokan voltage terminal.
- 15, 16, 18: Output contact terminals (15 is common, 16 is NC, 18 is NO).
3.2 Wiring Diagrams:
Refer to Figure 3 for specific wiring configurations based on your model (GRT8-EC/A220 or GRT8-EC/A380). Ensure all connections are secure and comply with local electrical codes.
4. Parentah Operasi
The GRT8-EC offers two primary functions: "Delay on" and "Delay off". The delay range and function mode are set using switches and a potentiometer on the front panel.
4.1 Panel Indicators:
- Un (Green LED): Supply indication. Lights up when power is supplied.
- R (Red LED): Output indication. Lights up when the output contact is closed.
4.2 Function Setting:
Use the "Delay on" / "Delay off" switch (T) on the panel to select the desired function.
- Reureuh on: When the relay Un is powered on, the relay starts to delay. The output contact closes after the set delay time. When Un is powered off, the output contact is disconnected immediately.
- Reureuh pareum: When the relay Un is powered on, the output contact of the relay will close immediately and start to delay. The contact is open after the set delay time. If the delay time 't' is not up prior to the power loss of relay Un, the output contact is open.
4.3 Delay Setting:
- Set the delay range and function mode using the switches on the panel. The available time ranges are:
- 0.1s - 1s
- 1s - 10s
- 0.1min - 1min
- 1min - 10min
- 0.1h - 1h
- 1h - 10h
- 0.1d - 1d
- 1d - 10 days
- Set the potentiometer (red dial) to adjust the time within the selected range (0-100%).

Example 1: Setting "Delay on" for 5 seconds
- Set the function switch to "Delay on".
- Set the delay range switch to "1s~10s".
- Set the potentiometer to 50%. The delay time will be 10 seconds × 50% = 5 seconds.
Example 2: Setting "Delay off" for 10 minutes
- Set the function switch to "Delay off".
- Set the delay range switch to "1min~10min".
- Set the potentiometer to 100%. The delay time will be 10 minutes × 100% = 10 minutes.
5. Pangropéa
The GEYA GRT8-EC time relay is designed for reliable, long-term operation with minimal maintenance.
- beberesih: Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use abrasive cleaners or solvents.
- Pamariksaan: Periodically inspect the terminals for secure connections. Ensure there are no signs of overheating or damage to the casing.
- Lingkungan: Ensure the operating environment is within the specified temperature and humidity ranges to prevent malfunction.
6. Cara ngungkulan
If you encounter issues with your GRT8-EC time relay, refer to the following common problems and solutions:
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Device not powering on (Green LED off) | Teu aya catu daya atanapi voltase anu salahtage. Loose wiring. | Check power supply to A1/A2/A3 terminals. Verify voltage matches device rating. Secure all wiring connections. |
| Output not switching (Red LED off/on incorrectly) | Incorrect function setting. Incorrect time setting. Faulty load. | Verify "Delay on" or "Delay off" function is correctly selected. Adjust time range and potentiometer. Test the connected load independently. |
| Timing teu konsisten | Unstable power supply. Environmental factors (temperature). | Ensure stable power input. Check operating environment conditions against specifications. |
| Paranti overheating | Overload on output contacts. Poor ventilation. | Ensure load current does not exceed 10A. Provide adequate ventilation around the device. |
If the problem persists after attempting these solutions, contact GEYA customer support or a qualified electrician.
7. Tips pamaké
- For critical applications, always test the relay's timing accuracy before full deployment.
- When setting the delay, start with a shorter time range and gradually increase it to fine-tune the desired delay.
- Consider using a protective enclosure for the relay in harsh industrial environments to extend its lifespan.
8. Garansi jeung Rojongan
GEYA products are manufactured to high-quality standards and come with relevant certifications (CE, RoHS, CB). For warranty information, technical support, or service inquiries, please refer to the official GEYA websitus atanapi ngahubungan distributor lokal Anjeun. Simpen resi pameseran anjeun pikeun klaim jaminan.
GEYA is committed to providing reliable electrical products and excellent customer service. They offer a wide range of low voltage electrical and automatic controlling products, including MCB, MCCB, ELCB, Isolators, contactors, relays, timers, VFDs, distribution boards, and related components.






