Walfront GRT8-M1 Multifunctional Delay Time Relay

1. Úvod

The Walfront GRT8-M1 is a versatile multifunctional delay time relay designed for various industrial and home automation applications. It offers 10 distinct delay functions and a wide time delay setting range from 0.1 seconds to 10 days. This relay is suitable for controlling electrical appliances, lighting, heating systems, motors, pumps, and fans. Its compact design allows for easy DIN rail mounting.

Klíčové vlastnosti:

• Ultra-wide delay range: 0.1s - 10 days.
• 10 delay functions including delay on, delay off, and cycle delay.
• LED indicators for relay working status.
• Compact 35mm DIN rail mounting.
• Vícesvtage compatibility: AC/DC 12V~240V.

2. Bezpečnostní informace

WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified electricians in accordance with all local and national electrical codes.

• Před instalací nebo servisem se ujistěte, že je odpojeno napájení.
• Ověřte správný objemtage and current ratings for your application.
• Do not exceed the maximum switching voltage nebo aktuální.
• The product is designed for indoor use in a dry environment.
• Veškerý elektroodpad by měl být zlikvidován v souladu s aktuálními předpisy WEEE.

3. Konec produktuview

The GRT8-M1 delay time relay features a compact housing with clearly labeled terminals and control knobs. It includes LED indicators for power and relay status.

Obrázek 3.1: Přední view of the GRT8-M1 Delay Time Relay showing its dimensions (90mm/3.5in length, 64mm/2.5in height, 18mm/0.7in width) and terminal labels (A1, A2, 15, 16, 18). It also highlights the red relay status indicator and green power indicator.

Obrázek 3.2: Detailní záběr view of the GRT8-M1 relay showing the two rotary knobs for time adjustment and function selection, along with the LED indicators. The diagram illustrates how to set the time range (Knob 1) and percentage (Knob 2).

4. Specifikace

5. Instalace

5.1 Montáž na lištu DIN

The GRT8-M1 is designed for easy mounting on a standard 35mm DIN rail. Simply align the relay with the rail and press firmly until it clicks into place. To remove, pull the red tabs at the bottom of the unit and lift it off the rail.

Obrázek 5.1: The GRT8-M1 Delay Time Relay shown mounted on a standard DIN rail, illustrating its compact form factor and secure attachment method.

5.2 Schéma zapojení

Connect the relay according to the appropriate wiring diagram for your desired function. Ensure all connections are secure and correctly terminated. The terminals are labeled A1, A2 for power input, and 15, 16, 18 for the output contact (15: Common, 16: Normally Closed, 18: Normally Open).

Obrázek 5.2: This image displays the panel diagram of the GRT8-M1, indicating the supply (green) and output (red) indicators, time setting, and function setting knobs. Below it, various wiring diagrams are shown for different contact configurations (1 SPDT).

Obrázek 5.3: A detailed wiring diagram showing the connection points for the GRT8-M1 relay, including the trigger terminal (S), working power input (A1, A2), and output contacts (15, 16, 18). It also illustrates a typical application with a load connected.

6. Provoz

The GRT8-M1 features two rotary knobs for setting the time range and the percentage of that range, along with a function selection knob.

6.1 Nastavení času

The time delay is set using two knobs:

• Knoflík 1 (horní): Selects the time gear (e.g., 1s, 10s, 1m, 10m, 1h, 10h, 1d, 10d). 'ON' for relay operation (15-18 closed), 'OFF' for relay open (15-16 closed).
• Knob 2 (Bottom): Fine adjustment of the delay time, from 10% to 100% of the selected time gear.

Example 1: To set a 5-second delay:

1. Set Knob 1 to '10s'.
2. Set Knob 2 to '50%'.
3. Calculated delay time = 10s * 50% = 5s.

Example 2: To set an 8-minute delay:

1. Set Knob 1 to '10m'.
2. Set Knob 2 to '80%'.
3. Calculated delay time = 10m * 80% = 8m.

Obrázek 6.1: This image provides a diagram of the GRT8-M1's dimensions and detailed instructions for setting the delay time using the two rotary knobs. It includes examples for calculating the final delay time.

6.2 Volba funkce

The GRT8-M1 offers 10 functions, selected via a rotary switch. Each function has a specific timing diagram:

Obrázek 6.2: A comprehensive diagram illustrating the 10 different operating functions (A-J) of the GRT8-M1 relay. Each function is accompanied by a timing chart showing the relationship between input voltage (Un), trigger signal (S), and relay contact status (R) over time.

• A: On Delay (Power On): Delay starts when input voltage U is applied. Contacts R transfer after delay t.
• B: Interval (Power On): Delay starts when input voltage U is applied. Contacts R transfer immediately and return after delay t.
• C: Repeat Cycle (Starting Off): Delay starts when input voltage U is applied. Contacts R transfer after delay t1, then return after t2. Cycle repeats until U is removed.
• D: Repeat Cycle (Starting On): Delay starts when input voltage U is applied. Contacts R transfer immediately for t1, then return for t2. Cycle repeats until U is removed.
• E: Off Delay (S Break): Vstupní objemtage U must be applied continuously. When trigger switch S is closed, relay contacts R change state. When trigger switch S is opened, delay t begins. When delay t is complete, contacts R return to their shelf state.
• F: Single Shot: Při aplikaci vstupního objtage U je relé připraveno přijmout spouštěcí signál S. Po přiložení spouštěcího signálu S se kontakty relé R přenesou a začne přednastavená doba t. Během časového limitu je spouštěcí signál S ignorován. Relé se resetuje stisknutím spouštěcího spínače S, když relé není pod napětím.
• G: Single Shot Trailing Edge (Non-Retriggerable): Při aplikaci vstupního objtage U, the relay is ready to accept trigger signal S. Upon application of the trigger signal S, the relay contacts R transfer and the preset time t begins. If the trigger switch S is opened and closed prior to time out t (before preset time elapses). Continuous cycling of the trigger switch S at a rate faster than the preset time t will cause the relay contacts R to remain closed. If input voltage U je odstraněno, kontakty relé R se vrátí do stavu police.
• H: On/Off Delay: Vstupní objemtage U musí být aplikováno nepřetržitě. Když je spouštěcí spínač S sepnutý, začíná časové zpoždění t. Po uplynutí časové prodlevy t změní kontakty relé R stav a zůstanou přeneseny, dokud se neotevře spoušť S. Pokud vstupní objtage U je odstraněno, kontakty relé R se vrátí do stavu police.
• I: Latching Relay: Vstupní objemtage U musí být aplikováno nepřetržitě. Výstup mění stav při každém sepnutí spínače S. Pokud vstupní objtage U je odstraněno, kontakty relé R se vrátí do stavu police.
• J: Pulse Generator: Při aplikaci vstupního objtage U, a single output pulse of 0.5 seconds is delivered to relay after time delay t. Power must be removed and re-applied to repeat pulse. Trigger switch S is not used in this function.

7. Údržba

The Walfront GRT8-M1 delay time relay requires minimal maintenance. Keep the unit clean and free from dust and moisture. Periodically check terminal connections for tightness to ensure reliable operation. Do not attempt to open or repair the unit yourself; refer to qualified personnel for any issues beyond basic troubleshooting.

8. Řešení problémů

• Relay not powering on: Zkontrolujte vstupní objtage (A1-A2) and ensure it is within the AC/DC 12V~240V range. Verify power connections.
• Relé se nespíná: Confirm the selected function and time settings are correct. Check trigger signal (S) if applicable. Ensure the load is properly connected to terminals 15, 16, 18.
• Nesprávné načasování: Re-check Knob 1 (time gear) and Knob 2 (percentage) settings. Ensure the selected time range matches your requirement.
• Nefunkční LED indikátory: If the green power LED is off, check power supply. If the red relay status LED is off when it should be on, check load and wiring.

If issues persist, consult a qualified electrician or contact customer support.

9. Záruka a podpora

For warranty information and technical support, please refer to the product packaging or contact Walfront customer service. Keep your purchase receipt for warranty claims.