GRT6-S Cycle Time Delay Relay | AC DC24V-240V

The GRT6-S Asymmetric Cycler Time Relay is a versatile device designed for applications requiring periodic on/off switching, such as regular room ventilation, cyclic dehumidification, light control, circulating pumps, and noon signs. Below is a detailed overview based on available information:

Key Features:

• Two Time Functions:
  • Cycler beginning with pulse (on first).
  • Cycler beginning with pause (off first).
  • Function selection is made via an external jumper between terminals S-A1.
• Time Scale:
  • Adjustable from 0.1 seconds to 100 days, divided into 10 time ranges:
    • 0.1 s – 1 s
    • 1 s – 10 s
    • 0.1 min – 1 min
    • 1 min – 10 min
    • 0.1 hr – 1 hr
    • 1 hr – 10 hrs
    • 0.1 day – 1 day
    • 1 day – 10 days
    • 3 days – 30 days
    • 10 days – 100 days
• Relay Status:
  • Indicated by an LED for easy monitoring.
• Mounting:
  • Compact 1-MODULE design, suitable for 35mm DIN rail mounting.
• Applications:
  • Used for periodic control in systems like ventilation, dehumidification, lighting, pumps, and signage.

Technical Specifications:

• Voltage Range: Typically supports a wide range, such as AC/DC 12V-240V or AC 230V, depending on the model (e.g., GRT6-S1 or GRT6-S2).
• Rated Current: Up to 16A for reliable switching.
• Frequency: 50/60 Hz.
• Output: Available in 1SPDT (Single Pole Double Throw) or 2SPDT configurations, depending on the model.
• Power Consumption: Approximately AC max 6VA/1.3W.
• Electrical Life: Up to 100,000 operations, ensuring durability.

Wiring and Setup:

• Function Selection: Connect or disconnect the jumper between terminals S-A1 to choose between pulse or pause mode.
• Time Setting: Independent on and off delay times are set using rotary switches, allowing precise control over cycle timing.
• LED Indicators:
  • Green LED: Power indicator.
  • Red LED: Output relay status.

Practical Applications:

• Ventilation: Automates regular room ventilation cycles.
• Dehumidification: Controls cyclic dehumidifiers for consistent moisture management.
• Lighting Control: Manages periodic lighting for signs or displays.
• Pumps: Regulates circulating pumps for water or other systems.
• Noon Signs: Automates signage that operates on a timed cycle.

Example Use Case:

In a scenario like replacing a mechanical timer in an ice machine (as discussed in a forum), the GRT6-S can be wired to control a compressor and water pump. For instance, it can be set to run the compressor for a period (e.g., cooling phase) and then switch to a water intake phase for a set duration (e.g., 2 minutes). The relay’s flexibility allows it to adapt to such applications, though care must be taken to ensure the load does not exceed the relay’s rated capacity to avoid failures, as noted in some user reviews.