Is it possible to configure the uxcell H3Y-2 time relay for an 'off-delay' function, for example, to have a buzzer sound when power is applied and then turn off after a set time?

The uxcell H3Y-2 is primarily designed as a Power-On Delay relay. This means that when power is applied, the relay waits for the set time to pass before switching its contacts (turning the load ON). It does not natively support a standard "Off-Delay" (where the load turns on immediately and then turns off after a delay) through its internal logic alone.However, you can achieve your goal of having a buzzer sound immediately and then turn off after a delay by using the Normally Closed (NC) contacts of the relay:Wiring for your scenario: Connect your buzzer to the Normally Closed (NC) terminals of the relay.How it works: When power is first applied to the relay, the contacts remain in their default (NC) state, allowing the buzzer to sound immediately. Once the set time delay (e.g., 10 seconds) expires, the relay activates and switches the contacts to the Open state, which cuts power to the buzzer and turns it off.Limitation: Note that in this configuration, the relay coil remains energized as long as the main power is on. The buzzer will only reset and be ready to sound again once the main power to the relay is removed and then reapplied.If you require a true off-delay function where the timer starts only after a control signal is removed, you would need a different model, such as a multi-function time relay or an H3Y-2-SX digital model which supports multiple operating modes.

uxcell H3Y-2 AC 220V 0-10 Minute Delay Timer Time Relay Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the uxcell H3Y-2 AC 220V Delay Timer Time Relay. This device is designed for precise time control in industrial automation systems and various mechanical equipment, offering a reliable power-on delay function.

2. Product Overview and Features

The uxcell H3Y-2 is a compact and efficient time relay featuring a DPDT (Double Pole Double Throw) contact type. It operates on AC 220V and offers a time delay range of 0 to 10 minutes, adjustable via a transparent setting knob. Key features include:

Model: H3Y-2
Contact Type: DPDT (Double Pole Double Throw)
Operating Voltage: AC 220V
Contact Rating: 5A 250VAC (Resistive Load)
Time Range: Adjustable from 0 to 10 minutes
Terminals: 8-pin solder terminal for secure connections
Mounting: Compatible with 35mm DIN Rail
Indicators: LED indicators for Power (PW) and Output Status (UP)
Adjustment: Large, transparent knob for easy time setting

Front view of uxcell H3Y-2 Delay Timer Time Relay with time setting knob and LED indicators.

Figure 1: Front view of the uxcell H3Y-2 Delay Timer Time Relay, showing the adjustable time knob and indicator lights.

Multiple views of uxcell H3Y-2 Delay Timer Time Relay, including a wiring diagram and the 8-pin socket.

Figure 2: Various perspectives of the H3Y-2 relay, including its 8-pin socket and a basic wiring schematic.

3. Setup and Installation

WARNING: Ensure all power is disconnected before attempting any installation or wiring to prevent electric shock or damage to the device.

3.1 Mounting

Identify a suitable 35mm DIN Rail in your control panel or enclosure.
Attach the provided 8-pin DIN Rail socket to the DIN Rail. Ensure it is securely fastened.
Insert the H3Y-2 time relay into the 8-pin socket. It should click into place.

3.2 Wiring

The relay uses an 8-pin solder terminal for electrical connections. Refer to the wiring diagram (Figure 2) for specific pin assignments. Ensure all connections are tight and correct for AC 220V operation.

Connect the AC 220V power supply to the designated input terminals on the 8-pin socket.
Connect the load (device to be controlled) to the DPDT output contacts.
Verify all wiring against the schematic to prevent misconnections.

4. Operation

4.1 Setting the Time Delay

Locate the transparent time setting knob on the front of the H3Y-2 relay.
Rotate the knob to align the red indicator with the desired time value between 0 and 10 minutes.

4.2 Powering On and Function

Once installation and wiring are complete and verified, restore power to the circuit.
The Power (PW) LED indicator on the relay will illuminate, indicating that the device is receiving power.
The relay will begin its timed delay countdown.
Upon completion of the set delay time, the Output Status (UP) LED will illuminate, and the relay contacts will switch, activating the connected load.
The relay maintains this state until power is removed and reapplied, initiating a new delay cycle.

5. Specifications

Feature	Specification
Product Name	Time Relay + Socket
Type	H3Y-2
Contact Type	DPDT (Double Pole Double Throw)
Operating Voltage	AC 220V
Contact Rating	5A 250VAC (Resistive Load)
Time Range	0-10 Minutes
Number of Terminals	8
Mounting Type	35mm DIN Rail
Fixing Mount Hole Size	6 x 4mm (L*W)
Fixing Mount Center Hole Distance	57 x 15mm (L*W)
Total Size (Approx.)	68 x 22 x 88mm (LWH)
Net Weight	65g
Connector Type	Solder
Contact Material	Silver
Operation Mode	Automatic
Item Model Number	a12122100ux0565

6. Maintenance

The uxcell H3Y-2 Delay Timer Time Relay is designed for reliable, long-term operation with minimal maintenance. However, periodic checks can help ensure optimal performance:

Cleaning: Keep the relay and its socket free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
Connections: Periodically inspect all wiring connections to ensure they remain secure and free from corrosion.
Environmental Conditions: Ensure the operating environment remains within specified temperature and humidity ranges to prevent premature wear.

7. Troubleshooting

If the uxcell H3Y-2 Delay Timer Time Relay does not function as expected, consider the following common issues and solutions:

No Power (PW LED Off):
- Check the AC 220V power supply to the relay socket.
- Verify all power connections are secure and correctly wired.
- Ensure the relay is fully seated in its 8-pin socket.
Relay Does Not Switch After Delay (UP LED Off):
- Confirm the time setting knob is correctly set to a non-zero delay time.
- Check the load connections and ensure the load itself is functional.
- Verify the contact rating (5A 250VAC) is not exceeded by the connected load.
Incorrect Delay Time:
- Re-adjust the time setting knob to the desired value.
- Ensure the knob is not obstructed and rotates freely.

If issues persist after performing these checks, contact uxcell customer support or a qualified electrician.

8. Warranty and Support

8.1 Warranty Information

Specific warranty details for the uxcell H3Y-2 Delay Timer Time Relay are not provided in this manual. Please refer to the product packaging or the official uxcell website for the most current warranty policy.

8.2 Customer Support

For technical assistance, product inquiries, or further support, please visit the official uxcell website or contact their customer service department. You can often find contact information and FAQs on their brand store page: uxcell Official Store.

uxcell H3Y-2