DH48S-S-2Z Digital Timer Relay User Manual

Model: DH48S-S-2Z

Brand: CERTEON

1. Introduction

The DH48S-S-2Z Digital Cycle Timer Relay is a programmable time-delay control device designed for industrial automation and electrical control systems. It supports cyclic delay operation with dual output contacts, enabling delayed start, delayed stop, and repeat timing control in machinery and process applications. The device features a wide adjustable timing range and a digital display for precise configuration.

Front view of the DH48S-S-2Z Digital Timer Relay with specifications — Front view of the DH48S-S-2Z Digital Timer Relay, showing the digital display, control buttons, and key specifications like voltage range (AC220V, AC/DC24V, AC/DC12V, AC380V, AC110V, AC36V), time range (0.1S-99H), function (Cycle delay, 2NO + 2NC contacts), and operating temperature (-10 to 60 °C).

2. Safety Information and Precautions

General Precautions

Ensure that wiring is performed by qualified personnel.
Disconnect power before installation, wiring, or maintenance.
Do not exceed the rated contact capacity of 250V AC 5A.
Operate only within the specified temperature range of -10°C to +60°C.
Install in a dry environment free from excessive dust, vibration, or corrosive gases.
Use appropriate circuit protection devices such as fuses or circuit breakers.

Warning Information (EU Market Reference)

WARNING!

Risk of electric shock. The device operates at hazardous voltages. Always disconnect power before handling.
Installation must be carried out in accordance with applicable low voltage regulations and electrical safety standards.
Do not touch live terminals during operation.
Keep out of reach of children.
Proper disposal: Follow WEEE directives for electronic waste.

Note: The above warning information is for reference only. Final warning language must comply with the official language requirements of the destination EU country.

3. Setup

Preparation

Verify that the rated operating voltage of the device matches the supply voltage.
Install the relay securely inside an electrical control cabinet with adequate ventilation.

Wiring Diagram

Ensure correct wiring according to the terminal diagram. Refer to the diagram below for proper connections.

Close-up of the timer relay's contact pins — Close-up of the large-capacity contact head with copper-plated zinc pins, highlighting excellent conductivity and precision craftsmanship, essential for reliable connections.

4. Operation

Basic Operation

Apply power to the device.
Set the required timing range using the front panel controls.
Adjust the desired delay time within the 0.1 second to 99 hour range.
Select the cycle delay mode as required by the application.

Data Reading

The digital display shows the configured timing value.
During operation, the display indicates the active timing countdown or cycle status.
Confirm that output contacts switch according to the programmed cycle sequence.

Frontal view of the DH48S-S-2Z Digital Timer Relay, clearly showing the digital display and control buttons for setting time and mode.

5. Specifications

Feature	Description
Model Number	DH48S-S-2Z
Power Supply Options	AC220V, AC/DC24V, AC/DC12V, AC380V, AC110V, AC36V
Rated Frequency	50/60Hz
Operating Temperature	-10°C to +60°C
Time Setting Range	0.1 seconds to 99 hours
Timing Mode	Cycle delay
Contact Configuration	2 normally open (NO) contacts and 2 normally closed (NC) contacts
Contact Capacity	250V AC 5A
Display Type	Digital LED display
EU LVD Voltage	High voltage: Above 50Vac or 75Vdc
High-concerned chemical	None
Origin	Mainland China
Altitude Limit	Less than 2000 meters
Package Dimensions (L x W x H)	12 cm x 8 cm x 8 cm
Package Weight	0.5 kg

6. Maintenance

Storage

Store the device in a dry and ventilated environment.
Avoid exposure to moisture, direct sunlight, and strong electromagnetic interference.
If the device is not used for an extended period, disconnect it from the power supply and store it in original packaging where possible.

Cleaning

Clean the surface with a dry soft cloth.
Do not use solvents or corrosive cleaning agents.

7. Troubleshooting

If you encounter issues with your DH48S-S-2Z Digital Timer Relay, consider the following basic troubleshooting steps:

Device not powering on: Check the power supply connection and ensure the voltage matches the device's rated voltage. Verify that circuit protection devices (fuses/breakers) are not tripped.
Incorrect timing or contacts not switching: Review your wiring against the provided diagram. Double-check the time settings and timing mode configured on the front panel. Ensure the load connected does not exceed the contact capacity.
Intermittent operation: Ensure the device is installed in a dry environment free from excessive vibration or electromagnetic interference.

For persistent issues, refer to the detailed PDF manual or contact support.

8. User Tips

No specific user tips are available from customer reviews or Q&A at this time. Always ensure proper voltage selection and secure wiring for optimal performance.

9. Frequently Asked Questions (FAQ)

No frequently asked questions are available from customer Q&A at this time.

10. Warranty and Support

For detailed information, including a comprehensive user manual, please refer to the official PDF document:

View User Manual (PDF)

For technical support or inquiries, you may contact CERTEON via:

WhatsApp: +86 19542723588
Email: celiachen008@gmail.com

CERTEON contact information — Contact information for CERTEON support.

CERTEON DH48S-S-2Z