SINOTIMER TM928 Series Programmable Electronic Time Clock User Manual

1. Introduction

The SINOTIMER TM928 series is a versatile programmable electronic time clock designed for automated control of various electrical devices. It features precise timing from 1 second up to 168 hours, an easy-to-read LCD with backlight, and a convenient lock function to prevent accidental changes. This manual provides essential information for the safe and efficient operation of your TM928 time clock.

2. Specifications

3. Setup

3.1 Installation

The TM928 time clock is designed for 35mm DIN rail mounting. Ensure the power is disconnected before installation.

1. Locate a suitable 35mm DIN rail within your electrical panel or enclosure.
2. Align the timer's mounting clips with the DIN rail.
3. Press firmly until the timer snaps securely onto the rail.

3.2 Wiring

WARNING: Electrical wiring should only be performed by a qualified electrician. Ensure all power is OFF before wiring.

The TM928 has terminals for power input (N, L) and load output (N, L). Refer to the diagram below for correct connections.

1. Connect the Neutral (N) wire from your power source to the 'N' input terminal.
2. Connect the Live (L) wire from your power source to the 'L' input terminal.
3. Connect the Neutral (N) wire of your load device to the 'N' output terminal.
4. Connect the Live (L) wire of your load device to the 'L' output terminal.

3.3 Initial Power-up

Once wired correctly, restore power. The LCD backlight will illuminate, and the clock display will activate. If the display is blank, check power connections.

4. Operating Instructions

The TM928 features a clear LCD and several buttons for programming. The buttons are typically labeled MENU, Res (Reset), Up arrow, Down arrow, and OK.

4.1 Setting the Clock

1. Press the 'MENU' button to enter the main menu.
2. Use the 'Up' and 'Down' arrow buttons to navigate to the 'Clock Set' or similar option.
3. Press 'OK' to select.
4. Adjust the hour, minute, and day of the week using the 'Up' and 'Down' arrows, confirming each setting with 'OK'.
5. Press 'MENU' to exit.

4.2 Programming ON/OFF Cycles (7 Days Programmable Timer)

The timer supports up to 8 ON/OFF programs. Each program can be set for specific days of the week.

1. Press the 'MENU' button to enter the main menu.
2. Navigate to the 'Program' or 'Timer Set' option using 'Up'/'Down' arrows.
3. Press 'OK'. You will see '1 ON' (Program 1 ON time).
4. Use 'Up'/'Down' to set the desired ON time (hour and minute), confirming with 'OK' after each.
5. Next, set the days of the week for this ON event. You can choose individual days, weekdays, weekends, or all days. Confirm with 'OK'.
6. The display will then show '1 OFF' (Program 1 OFF time). Repeat the process to set the OFF time and days.
7. Continue this process for up to 8 ON/OFF programs.
8. To exit programming, press 'MENU'.

4.3 Lock Function

The lock function prevents unauthorized or accidental changes to the settings.

1. To activate the lock, press and hold the 'Res' button for approximately 3-5 seconds until 'LOCK' appears on the display.
2. To deactivate the lock, press and hold the 'Res' button again for 3-5 seconds until 'LOCK' disappears.

4.4 Manual Override

The timer typically includes a manual override function to temporarily switch the output ON or OFF, regardless of the programmed schedule. Consult the on-screen prompts or specific button combinations (often involving the 'OK' button) to access this feature.

5. Maintenance

The SINOTIMER TM928 is designed for low maintenance. Follow these guidelines to ensure longevity:

• Cleaning: Use a soft, dry cloth to clean the exterior. Do not use abrasive cleaners or solvents.
• Environment: Ensure the timer is installed in a dry environment, away from direct sunlight, extreme temperatures, and corrosive gases.
• Battery: The internal battery (if present for memory backup) is typically long-lasting and not user-replaceable.

6. Troubleshooting

• Display is blank: Check the power supply connections (N and L input). Ensure the voltage is within the specified range (85-265VAC).
• Timer not switching:
  • Verify that the current time and day are set correctly.
  • Check that the ON/OFF programs are correctly entered and enabled.
  • Ensure the load is properly connected to the output terminals.
  • Confirm the timer is not in 'LOCK' mode or manual override mode that prevents automatic operation.
• Buttons unresponsive: Check if the lock function is active. Deactivate it by holding the 'Res' button.
• Inaccurate timing: If the clock loses time or gains time significantly, it may indicate an internal issue. Contact support.

7. User Tips

• Test your programs: After setting up a new program, observe the timer for a full cycle to ensure it operates as expected before relying on it for critical applications.
• Consider power outages: While the timer has internal memory, prolonged power outages might require resetting the clock.
• Label your circuits: Clearly label the circuit controlled by the timer for safety and easy identification.
• Use the lock function: Activate the lock function after programming to prevent accidental changes, especially in accessible locations.

8. Warranty and Support

For technical support, warranty information, or if you require a detailed manual in English, Russian, or Portuguese, please contact SINOTIMER customer service or the seller directly. Provide your model number (TM928) and a description of the issue for faster assistance.