Hanyoung Nux T21-1-4A20 Mini Timer

The Hanyoung Nux T21-1-4A20 is a compact digital mini timer designed for precision timing applications in industrial automation and control systems. This device is widely used by automation engineers, plant operators, and control system integrators who require reliable time-delay functionality in their electrical panels and machinery. It solves the critical problem of implementing accurate time delays, pulse generation, and cycle timing in automated processes without requiring complex programming or large panel space.

Product Overview

The T21-1-4A20 mini timer operates on the principle of electronic time-delay relay functionality, utilizing a microprocessor-based control circuit to generate precise timing intervals. This model features a compact DIN-rail mountable design that fits seamlessly into standard electrical enclosures, making it ideal for retrofit applications and space-constrained installations. The timer employs solid-state relay output technology, eliminating the mechanical wear associated with traditional electromagnetic relays while providing faster switching response times and improved reliability in harsh industrial environments.

What distinguishes the T21-1-4A20 is its versatile timing range capability and multiple operating modes that cater to diverse industrial applications. The device utilizes a 4-digit LED display for real-time parameter visibility and configuration, allowing technicians to monitor timing values and operational status at a glance. Its robust construction with industrial-grade components ensures stable performance across temperature fluctuations and electrical noise typical in manufacturing facilities, power distribution systems, and process control environments.

Key Specifications

Key Features

• Precision timing accuracy with adjustable resolution from 0.1 seconds to 1 hour intervals, enabling fine-tuned control in critical timing sequences
• Multiple operating modes including on-delay, off-delay, and pulse generation for versatile automation requirements across different industrial processes
• Compact DIN-rail design measuring approximately 45mm width, allowing installation in tight panel spaces without requiring additional enclosure modifications
• 4-digit LED display with intuitive push-button interface for quick parameter adjustment and real-time operational status monitoring
• Solid-state relay output rated at 4A 250VAC providing fast switching times under 10ms and superior reliability compared to mechanical relays
• Wide supply voltage compatibility supporting both AC 100-240V and DC 24V operation, making it suitable for diverse electrical infrastructure standards

Applications and Use Cases

• Pump motor control systems where precise on-delay timing prevents water hammer effects and ensures smooth equipment startup in irrigation and industrial water treatment facilities
• Conveyor belt automation sequences requiring coordinated start-stop timing between multiple driven rollers and sorting mechanisms in manufacturing and logistics operations
• HVAC system cycling control for heating and cooling equipment, managing compressor run-time intervals and preventing rapid on-off cycling that reduces equipment lifespan
• Industrial furnace and oven temperature stabilization through controlled heating element pulse timing, maintaining consistent thermal profiles in food processing and metal treatment applications
• Emergency lighting and backup power system sequencing, ensuring proper time-delayed activation of standby generators and distribution of electrical loads during power transitions
• Machinery safety interlocks implementing timed delays between operational sequences, protecting operators from unexpected equipment movement in presses, shears, and automated assembly stations

How to Use

Installation of the T21-1-4A20 begins with mounting the unit onto a standard 35mm DIN rail within your electrical enclosure, ensuring proper orientation with the display facing outward for visibility. Connect the supply voltage to the designated terminals, observing polarity if using DC supply, and wire the load circuit through the relay output contacts rated at 4A maximum. Before energizing the system, verify all connections using a multimeter to prevent short circuits and ensure proper grounding of the enclosure.

Configuration requires entering the desired timing parameters using the push-button interface on the device face. Press the mode button to cycle through available timing functions such as on-delay or off-delay, then use the increment and decrement buttons to set your desired time value displayed on the 4-digit LED screen. Once configured, the timer automatically activates when its trigger input receives the appropriate signal, and the relay output switches to energize your connected load. For complex multi-step timing sequences, document your configuration settings for future reference and maintenance purposes.

Frequently Asked Questions

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