Walfront GRT8-M1 Multifunctional Delay Time Relay

1. Introduktion

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.

Nøglefunktioner:

• 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.
• Multi-voltage compatibility: AC/DC 12V~240V.

2. Sikkerhedsoplysninger

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

• Sørg for, at strømmen er afbrudt før installation eller service.
• Bekræft korrekt voltage and current ratings for your application.
• Do not exceed the maximum switching voltage eller nuværende.
• The product is designed for indoor use in a dry environment.
• Alt elektrisk affald skal bortskaffes i overensstemmelse med gældende WEEE-regler.

3. Produktet er slutview

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.

Billede 3.1: Front 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.

Billede 3.2: Nærbillede 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. Specifikationer

5. Installation

5.1 DIN-skinnemontering

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.

Billede 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 Ledningsdiagram

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).

Billede 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).

Billede 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. Betjening

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 Tidsindstilling

The time delay is set using two knobs:

• Knob 1 (Top): 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.

Exampafsnit 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.

Exampafsnit 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.

Billede 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 Funktionsvalg

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

Billede 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): Input voltage 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: Ved anvendelse af input voltage U, relæet er klar til at modtage triggersignal S. Ved påtrykning af triggersignalet S overføres relækontakterne R og den forudindstillede tid t begynder. Under time-out ignoreres triggersignalet S. Relæet nulstilles ved at aktivere triggerkontakten S, når relæet ikke er aktiveret.
• G: Single Shot Trailing Edge (Non-Retriggerable): Ved anvendelse af input voltage 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 fjernes, relækontakterne R vender tilbage til deres hyldetilstand.
• H: On/Off Delay: Input voltage U skal anvendes løbende. Når udløserkontakten S er lukket, begynder tidsforsinkelsen t. Når tidsforsinkelsen t er fuldført, skifter relækontakterne R tilstand og forbliver overført, indtil udløserkontakten S åbnes. Hvis input voltage U fjernes, relækontakterne R vender tilbage til deres hyldetilstand.
• I: Latching Relay: Input voltage U skal anvendes løbende. Output skifter tilstand med hver triggerkontakt S-lukning. Hvis input voltage U fjernes, relækontakterne R vender tilbage til deres hyldetilstand.
• J: Pulse Generator: Ved anvendelse af input voltage 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. Vedligeholdelse

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. Fejlfinding

• Relay not powering on: Kontroller input voltage (A1-A2) and ensure it is within the AC/DC 12V~240V range. Verify power connections.
• Relæet skifter ikke: 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.
• Forkert timing: Re-check Knob 1 (time gear) and Knob 2 (percentage) settings. Ensure the selected time range matches your requirement.
• LED-indikatorer virker ikke: 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. Garanti og support

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