Instruction Manual for SINOTIMER TM920AKL Digital Programmable Timer Switch

Introduction

The SINOTIMER TM920AKL is a versatile 3-in-1 digital programmable timer switch designed for controlling electrical appliances with precision. It features a clock display, 7-day programmable timer functions, countdown capabilities, and pulse control. This device is suitable for various applications requiring automated power control, such as lighting, heating, and other electrical systems.

Key Functions

• Clock Display: Shows Year, Month, Day, Hour, and Minute.
• 7-Day Programmable Timer: Allows for up to 16 ON/OFF programs per day across a 7-day cycle.
• Countdown Function: Set a countdown timer for specific operations.
• Pulse Control: Provides short duration output pulses for specific applications.

Specifications

Safety Information

Please read and understand all safety instructions before installation and operation. Improper installation or use can lead to electric shock, fire, or damage to the device and connected equipment.

• Professional Installation Recommended: Electrical wiring should be performed by a qualified electrician.
• Power Disconnection: Always disconnect power at the main circuit breaker before installing or servicing the timer switch.
• Voltage Compatibility: Ensure the power supply voltage (85-265VAC) matches the device's specifications.
• Load Capacity: Do not exceed the maximum load capacity of 16A (for TM920AKL) or 30A (for TM920BKL) to prevent overheating and damage.
• Environment: Install in a dry, well-ventilated area, away from direct sunlight, high temperatures, and corrosive gases.

Installation and Wiring

The TM920AKL timer switch is designed for 35mm DIN rail mounting. Follow the wiring diagrams carefully.

DIN Rail Mounting

Align the timer switch with a standard 35mm DIN rail and press firmly until it clicks into place. Ensure it is securely fastened.

Wiring Diagram (TM920AKL - 16A)

For direct control of a load (e.g., a light bulb) up to 16A, connect as shown in Figure 4. Ensure the Live (L) and Neutral (N) inputs are correctly identified and connected to terminals 1 and 2 respectively. The load should be connected between terminal 3 (Normally Open, NO) and the Neutral line. Terminal 4 (Normally Closed, NC) can be used for applications requiring a normally closed contact.

Wiring Diagram (TM920BKL - 30A)

For the TM920BKL model (30A), direct load connection is similar to the TM920AKL, but it can handle higher current. For loads exceeding the timer's direct capacity or for inductive loads, it is recommended to use an external contactor as shown in Figure 5.

Important: Always ensure power is OFF before performing any wiring. Double-check all connections before restoring power.

Operating Instructions

The timer switch features a clear LCD display and intuitive buttons for programming. Refer to Figure 7 for button identification.

Initial Setup (Setting Current Time)

1. Power On: Connect the timer to power. The LCD backlight will illuminate.
2. Reset: If the display is erratic or you need to clear all settings, press the small "Res" (Reset) button using a pointed object (e.g., a toothpick).
3. Set Time:
   • Press the "MENU" button.
   • Use the Up/Down arrow buttons to navigate to "Clock" or "Time Setting" (exact wording may vary slightly).
   • Press "OK" to enter time setting mode.
   • Use Up/Down arrows to adjust Year, Month, Day, Hour, and Minute. Press "OK" to confirm each setting and move to the next.
   • Once all settings are confirmed, the clock will start running.

Programming ON/OFF Cycles (7-Day Timer)

The timer supports up to 16 ON/OFF programs. Each program consists of an ON time and an OFF time, and can be set for specific days of the week or daily.

1. Enter Program Mode:
   • Press "MENU".
   • Navigate to "Program" or "Timer Setting".
   • Press "OK". You will see "1 ON" displayed.
2. Set 1st ON Time:
   • Use Up/Down arrows to select the desired day(s) of the week for this program (e.g., MO TU WE TH FR SA SU for daily, or specific days).
   • Press "OK".
   • Use Up/Down arrows to set the hour for the 1st ON time. Press "OK".
   • Use Up/Down arrows to set the minute for the 1st ON time. Press "OK".
3. Set 1st OFF Time:
   • The display will now show "1 OFF".
   • Repeat the process to set the day(s), hour, and minute for the 1st OFF time. Press "OK" after each setting.
4. Add More Programs: After setting the 1st OFF time, the display will show "2 ON". Repeat steps 2 and 3 for up to 16 programs.
5. Exit Program Mode: Press "MENU" to return to the main clock display.

Countdown Function

The countdown function allows for a single timed event, up to 99 minutes and 59 seconds.

1. Enter Countdown Mode:
   • Press "MENU".
   • Navigate to "Countdown".
   • Press "OK".
2. Set Countdown Time:
   • Use Up/Down arrows to set the desired minutes. Press "OK".
   • Use Up/Down arrows to set the desired seconds. Press "OK".
3. Start Countdown: The countdown will begin automatically. The output will switch ON (or OFF, depending on the initial state and programming) for the duration of the countdown.
4. Cancel Countdown: Press "MENU" to exit countdown mode at any time.

Pulse Control Function

This function provides a short pulse output, useful for triggering other devices.

1. Enter Pulse Mode:
   • Press "MENU".
   • Navigate to "Pulse".
   • Press "OK".
2. Set Pulse Duration:
   • Use Up/Down arrows to set the desired pulse duration (e.g., in seconds). Press "OK".
3. Activate Pulse: The timer will output a pulse of the set duration.

Manual Override

The timer typically has a manual override button (often labeled "Man" or similar on the display, or a dedicated button) to temporarily switch the output ON or OFF without affecting the programmed schedule. Consult the specific model's display for manual override options (e.g., ON, OFF, AUTO).

Video 1: Basic Operation and Display of the SINOTIMER TM920AKL.

Maintenance

• Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Battery Replacement: The timer uses a CR2032 battery to maintain settings during power outages. If the display becomes dim or settings are lost frequently, replace the battery.
  1. Disconnect power to the timer.
  2. Carefully open the battery compartment (usually on the side or back).
  3. Replace the old CR2032 battery with a new one, ensuring correct polarity.
  4. Close the compartment and restore power.
• Regular Checks: Periodically check wiring connections for tightness and signs of wear or damage.

Troubleshooting

User Tips

• Clear Instructions: Some users find the initial setup challenging. Always refer to this manual for detailed programming steps.
• Test Programs: After setting up your programs, observe the timer for a full cycle to ensure it operates as expected before relying on it for critical applications.
• Backup Battery: Ensure the CR2032 battery is installed and functional to prevent loss of settings during power interruptions.

Warranty and Support

This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.

For further assistance, you may be able to find additional resources or contact information on the SINOTIMER official website.