Walfront KG316T Microcomputer Control Power Timer Switch User Manual

1. Introduction

The Walfront KG316T Microcomputer Control Power Timer Switch is a versatile digital programmable timer relay designed to automatically control various electrical equipment. It allows users to set specific ON/OFF times for appliances, street lamps, neon lamps, production equipment, radio and television systems, and other industrial or home devices. This manual provides detailed instructions for installation, operation, and maintenance of your timer switch.

2. Safety Information

WARNING: Risk of Electric Shock. Disconnect power before installation or servicing.

• Always ensure the power supply is disconnected before attempting any wiring or installation.
• Installation should be performed by a qualified electrician or knowledgeable individual to prevent electric shock or damage to the device.
• Do not operate the timer switch in wet or damp conditions.
• Ensure all connections are secure and properly insulated.
• Do not exceed the specified load capacity of the switch.

3. Product Overview

The KG316T timer switch features an LCD display for easy programming and monitoring, along with several control buttons and indicator lights.

Figure 3.1: Front view of the KG316T Timer Switch, showing the LCD display and control buttons.

Figure 3.2: Angled view of the KG316T Timer Switch, illustrating its physical dimensions (120mm length, 74mm width, 51mm height).

3.1 Components and Display

• LCD Display: Shows current time, program status (ON/AUTO/OFF), and programming parameters.
• Buttons:
  • RESET/RECALL: Resets settings or recalls programs.
  • HOUR: Adjusts hour during time setting or programming.
  • MINUTE: Adjusts minute during time setting or programming.
  • WEEK: Selects day(s) of the week for programs.
  • AUTO/MANU: Toggles between Automatic and Manual modes.
  • TIMER: Enters programming mode for ON/OFF settings.
  • CLOCK: Used to set the current time and exit programming mode.
• Indicator Lights:
  • POWER (Red): Indicates that the circuit is powered.
  • WORK (Green): Indicates that the switch is closed (output is active).

Figure 3.3: Comparison of the 'New Type' and 'Old Type' KG316T models. Functionality remains consistent.

4. Specifications

5. Setup

5.1 Battery Installation (for 220V models)

The 110V version of this timer switch has an inbuilt battery for data storage. For the 220V version, an external AA battery (not included) is required to retain settings during power outages. Locate the battery compartment, insert one AA battery, ensuring correct polarity.

5.2 Initial Power-Up

Once wired correctly and power is supplied, the LCD display will illuminate. If the display is blank, check the power connection and battery (if applicable).

6. Wiring Instructions

Proper wiring is crucial for the safe and correct operation of the timer switch. Refer to the diagrams and descriptions below. If you are unsure, consult a qualified electrician.

Figure 6.1: View of the KG316T timer switch terminals for wiring connections.

6.1 Direct Control Wiring (Single-Phase, Low Power)

This wiring method is suitable for single-phase powered electrical appliances with lower power consumption that falls within the switch's direct load capacity (10A resistive/inductive).

6.2 Single-Phase Expansion Wiring

For single-phase powered electrical appliances with higher power consumption than the direct load capacity of this switch, you will need an external alternating current contactor. The timer switch will control the coil voltage of this external contactor, which in turn handles the higher load.

6.3 Three-Phase Wiring (AC220V Control Coil)

For three-phase electrical appliances, with an AC220V control coil voltage, you will need an external three-phase AC contactor. The timer switch will activate or deactivate the coil of this contactor to control the three-phase load.

6.4 Three-Phase Wiring (AC380V Control Coil)

Similarly, for three-phase electrical appliances with an AC380V control coil voltage, you will need an external three-phase AC contactor. The timer switch will manage the operation of this contactor to control the three-phase power.

7. Operating Instructions

7.1 Setting Clock (Present Time)

1. Press and hold the "CLOCK" button.
2. While holding "CLOCK", press "WEEK" to set the current day of the week.
3. While holding "CLOCK", press "HOUR" to set the current hour.
4. While holding "CLOCK", press "MINUTE" to set the current minute.

7.2 Setting Programs (ON/OFF Times)

The timer supports up to 10 ON and 10 OFF settings.

1. Set "1 on": Press the "TIMER" button. The LCD will display "1 on" at the bottom left. Then press "HOUR" and "MINUTE" buttons to set the desired ON time for the first program.
2. Set "1 off": Continue to press the "TIMER" button. The LCD will display "1 off" at the bottom left. Then press "HOUR" and "MINUTE" buttons to set the desired OFF time for the first program.
3. Set Additional Programs: Continue to press the "TIMER" button. The LCD will successively display "2 on", "2 off", "3 on", "3 off" ... up to "10 on", "10 off". Repeat the process of setting HOUR and MINUTE for each desired ON/OFF program.
4. Clearing Unused Programs: If you only need a few programs (e.g., "1 on", "1 off") and wish to clear the remaining ones, press the "TIMER" button until the desired program number is displayed (e.g., "2 on"). Then press the "RESET/RECALL" button. This will set the time for that program to "--:--" instead of "00:00" (shown on the LCD), effectively disabling it.
5. Saving Settings: After completing all program settings, press the "CLOCK" button. The LCD will display the present time. If no button is pressed for 30 seconds, it will automatically display the present time and save the settings.

7.3 Understanding Indicator Lights

• When connected to a circuit, the red light (POWER) indicates if the circuit is powered.
• The green light (WORK) indicates if the switch is closed (i.e., the output is active and power is being supplied to the connected appliance).

7.4 Using the AUTO/MANU Button

Press the "AUTO/MANU" button to cycle through different operating modes:

• ON: The switch is manually forced ON, overriding programmed settings.
• AUTO: The switch operates according to the programmed ON/OFF times.
• OFF: The switch is manually forced OFF, overriding programmed settings.

To return to automatic operation, press the "AUTO/MANU" button until the LCD displays "AUTO".

7.5 Setting Days of the Week for Programs

After setting an ON/OFF program, you can specify which day or days of the week it should be active:

• Press the "TIMER" button to navigate to the desired program (e.g., "1 on").
• Then press the "WEEK" button repeatedly to cycle through various day combinations:
  • Mon, Tue, Wed, Thu, Fri, Sat, Sun (All days)
  • Mon
  • Tue
  • ... (Individual days)
  • Mon, Tue, Wed, Thu, Fri (Weekdays)
  • Sat, Sun (Weekends)
  • Mon, Wed, Fri
  • Tue, Thu, Sat
  • Mon, Tue, Wed
  • Thu, Fri, Sat
  • And other combinations.
• Select the desired day combination for that specific program.

8. Maintenance

• Keep the timer switch clean and free from dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
• Ensure the operating environment is within the specified temperature and humidity ranges.
• If the 220V model uses an external AA battery, replace it periodically (e.g., annually) to ensure data retention during power outages.
• Regularly check wiring connections for tightness and signs of wear or damage.

9. Troubleshooting

10. Warranty and Support

Walfront products are manufactured to high quality standards. For specific warranty details, please refer to the warranty card included with your purchase or visit the official Walfront website. If you encounter any issues not covered in this manual or require further assistance, please contact Walfront customer support through their official channels.