SINOTIMER TM919B 30A Programmable Electronic Timer Switch User Manual

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of the SINOTIMER TM919B 30A Programmable Electronic Timer Switch. This device is designed to automatically control the ON/OFF switching of various electrical appliances based on user-defined daily or weekly programs. Please read this manual carefully before installation and use to ensure proper function and safety.

2. Safety Information

WARNING: Risk of electric shock. Installation should only be performed by a qualified electrician or trained personnel.

• Always disconnect power at the circuit breaker before installing or servicing the timer switch.
• Ensure all wiring connections are secure and comply with local electrical codes.
• Do not exceed the maximum load rating of 30A.
• This device is intended for indoor use only. Avoid exposure to moisture or extreme temperatures.
• Do not attempt to disassemble or repair the unit yourself. Contact qualified service personnel.

3. Product Overview

The SINOTIMER TM919B is a digital timer switch featuring a large LCD display, multiple programming options, and a manual override function. It is designed for DIN rail mounting.

3.1. Components and Controls

Figure 1: Front view of the TM919B timer switch, showing the LCD display, control buttons, and terminal connections.

Figure 2: Angled view of the TM919B with the transparent protective cover open, revealing the programming buttons (P, D+, H+, M+, RESET, MANUAL).

• LCD Display: Shows current time, day, and program status.
• P (Program) Button: Enters/exits program setting mode.
• D+ (Day) Button: Adjusts day of the week in setting modes.
• H+ (Hour) Button: Adjusts hour in setting modes.
• M+ (Minute) Button: Adjusts minute in setting modes.
• RESET Button: Clears all settings and resets the timer to factory defaults.
• MANUAL Button: Toggles between ON, AUTO, and OFF modes.
• Terminal Connections: For power input and load output.

4. Specifications

Figure 3: Detailed dimensions of the TM919B timer switch, showing height, width, and depth measurements.

5. Setup and Installation

Follow these steps for safe and correct installation of your timer switch.

5.1. Mounting

1. Ensure power is disconnected at the main circuit breaker.
2. Mount the TM919B onto a standard 35mm DIN rail. The device features a clip mechanism on the back for secure attachment.
3. Press the orange clip at the bottom of the unit to release it from the DIN rail if removal is necessary.

Figure 4: Side view of the TM919B, highlighting the orange DIN rail mounting clip.

Figure 5: Back view of the TM919B, illustrating the DIN rail mounting mechanism.

5.2. Wiring Diagram

Refer to the diagram below for correct wiring connections. Ensure all connections are tight and insulated.

Figure 6: Side view of the TM919B showing the wiring diagram printed on the casing. Terminals 1 and 2 are for power input (L and N). Terminals 3, 4, and 5 are for load output (Common, Normally Open, Normally Closed).

• Terminals 1 & 2: Power Input (L - Live, N - Neutral). Connect your 220V AC supply here.
• Terminal 3: Common (COM) for the output relay.
• Terminal 4: Normally Open (NO) output. The load will be powered when the timer is ON.
• Terminal 5: Normally Closed (NC) output. The load will be powered when the timer is OFF.

For typical applications where the load is switched ON by the timer, connect the load between Terminal 3 (COM) and Terminal 4 (NO).

6. Operating Instructions

6.1. Initial Setup and Reset

1. After connecting power, the display may be blank or show random characters. Press the RESET button with a pointed object (e.g., a pen tip) to clear all memory and reset the timer. The display will show "0:00" and "MO".
2. Allow the internal battery to charge for at least 30 minutes before programming for optimal performance and memory retention during power outages.

6.2. Setting Current Time and Day

1. Press and hold the D+ button to set the current day of the week (MO, TU, WE, TH, FR, SA, SU).
2. Press and hold the H+ button to set the current hour (0-23).
3. Press and hold the M+ button to set the current minute (0-59).
4. Release the buttons when the correct time and day are displayed. The timer will automatically save the settings.

6.3. Programming ON/OFF Cycles

The TM919B supports up to 16 ON/OFF programs. Each program consists of an ON time and an OFF time.

1. Press the P button once. The display will show "1 ON". This is for the first ON program.
2. Use D+ to select the day(s) for this program. Options include:
   • MO TU WE TH FR SA SU (Every day)
   • MO (Monday only)
   • TU (Tuesday only)
   • ...
   • MO TU WE TH FR (Weekdays)
   • SA SU (Weekends)
   • MO TU WE (Mon-Wed)
   • TH FR SA (Thu-Sat)
   • MO WE FR (Mon, Wed, Fri)
   • TU TH SA (Tue, Thu, Sat)
   • MO TU WE TH FR SA (Mon-Sat)
3. Use H+ and M+ to set the desired ON hour and minute.
4. Press the P button again. The display will show "1 OFF". This is for the first OFF program.
5. Use D+, H+, and M+ to set the desired OFF day, hour, and minute. Ensure the OFF time is after the ON time for the same program.
6. Repeat steps 1-5 for additional ON/OFF programs (up to 16). If you don't need all 16 programs, simply press P to cycle through unused programs until you return to the current time display.
7. To exit programming mode and save settings, press the clock button (usually labeled with a clock icon, or simply wait for 30 seconds without input).

6.4. Manual Override

Press the MANUAL button to cycle through the operating modes:

• ON: The timer output is continuously ON, ignoring all programs.
• AUTO: The timer operates according to the programmed ON/OFF cycles. This is the standard operating mode.
• OFF: The timer output is continuously OFF, ignoring all programs.

Ensure the timer is set to AUTO for programmed operation.

7. Maintenance

• The TM919B is designed for maintenance-free operation.
• Clean the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Ensure the internal battery is charged by keeping the unit powered for at least 24 hours initially, and periodically thereafter, to maintain time and program memory during power outages.

8. Troubleshooting

9. Warranty and Support

SINOTIMER products are manufactured to high-quality standards. For warranty information or technical support, please refer to the documentation provided with your purchase or visit the official SINOTIMER website. Keep your purchase receipt as proof of purchase.

For further assistance, you may contact SINOTIMER customer service through their official channels.