1. Introduction
The SINOTIMER TM627 Digital Time Delay Relay is designed for precise control of electrical circuits, allowing for regular switching on and off with a cyclic operation mode. It supports various power supplies including 110V AC, 220V AC, 12V DC, and 24V DC, making it versatile for different applications. The device features a built-in battery to retain programmed settings during power outages.
Front view of the SINOTIMER TM627 Digital Time Delay Relay, showing the LCD display and control buttons.
2. Safety Information
Please read and understand all safety instructions before installing or operating the device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure the blue limiting piece in the bottom of the product is pushed in before work.
- Press the 'R' button for 3 seconds to wake or sleep the LCD.
- Ensure the timer switch is connected to the correct power supply (12V DC, 24V DC, 110V AC, or 220V AC) as specified for your model. Connecting to an incorrect voltage can damage the device.
- If there is an abnormal situation, short terminals 3 and 4 to reset the device. After reset, re-enter time settings.
- All wiring should be performed by a qualified electrician in accordance with local and national electrical codes.
- Do not operate the device with wet hands or in damp conditions.
- Properly dispose of the product at the end of its life cycle according to local regulations.
3. Product Overview
The TM627 Digital Time Delay Relay features a clear LCD display for time indication and programming. Control is managed via five buttons located below the display:
- MD (Mode): Used to cycle through different setting modes.
- R (Recall): Used to wake/sleep the LCD and recall settings.
- < (Shift): Used to move the cursor or selection during setting.
- - (Minus): Used to decrease values during setting.
- + (Plus): Used to increase values during setting.
The device is designed for DIN rail mounting.
4. Specifications
4.1 Technical Data Table
| Parameter | Value |
|---|---|
| Model | TM627 |
| Temperature Range | -20°C to +50°C |
| Power Consumption | 4.5 VA (MAX) |
| Switching Contact | 1 NO. + 1 NC. |
| Hysteresis | 1 sec/day (25°C) |
| Capacity | 16A 250V AC |
| Timer Range | 1s ~ 99hr 59min 59sec |
| Average Error | 1s/24h, 25°C |
| Power Supply | As per order (110V AC, 220V AC, 12V DC, 24V DC options) |
| Display | LCD |
| Programs | 1 group ON/OFF |
| Mini Interval | 1 Second |
| Black-out Memory | 60 days |
| Recharged Battery | 1.2V |
| Weight | 0.12kg |
4.2 Additional Specifications
- Theory: Digital
- Type: Mini
- Use: Timer Switch
- Origin: Mainland China
- Certification: CE
- Dimension: 82*68*35mm
- Max. Current of Output Load: 16A
- Mini Interval: 1 Second
- Max Interval: 99 hours 59 minutes 59 seconds
- Set: ON and OFF duration time
- Characteristics: Cycle Timer, Circular Timer, Loop Timer, 1 group Cycle ON/OFF
5. Setup
5.1 Installation Dimensions
The TM627 is designed for easy installation. Refer to the diagram below for precise dimensions.
Outside dimensions: 82mm (height) x 35mm (width) x 68mm (depth). Installation dimensions: 35.4±0.28mm, 88.8±0.8mm.
5.2 Wiring Methods
Proper wiring is crucial for safe and correct operation. Choose the appropriate wiring method based on your application and load requirements.
5.2.1 Direct Control Method
This method is suitable when the power of the controlled appliance is supplied in single-phase, and its working current does not exceed the rated value of the switch (16A). For light loads with significant starting current impact, consider using an AC contactor expansion control method.
Wiring diagram for direct single-phase control.
5.2.2 Single-Phase Expansion Method
If the controlled appliance is single-phase and its working current exceeds the rated value of the switch, an external AC contactor expansion control method must be used.
Wiring diagram for single-phase expansion control using an AC contactor.
5.2.3 Three-Phase Operating Method
When the controlled appliance is supplied in three-phase, an external AC contactor is required.
5.2.3.1 Contactor Coil Voltage 220V AC
Wiring diagram for three-phase control with a 220V contactor coil.
5.2.3.2 Contactor Coil Voltage 380V AC
Wiring diagram for three-phase control with a 380V contactor coil.
6. Operating Instructions
6.1 Waking/Sleeping LCD
Press the 'R' button for 3 seconds to wake or sleep the LCD display.
6.2 Setting Timing Parameters (Cyclic ON/OFF Time)
The TM627 allows you to set one group of cyclic ON/OFF times. The setting process is as follows:
- Enter Setting Mode: Press the 'MD' button. The display will show 'lon' at the bottom left, indicating you are in the ON time setting state.
- Set 1ON (Cyclic Opening) Time:
- Use the '<' button to select the digit for seconds, minutes, or hours. The selected digit will flash.
- Use the '+' or '-' buttons to adjust the desired ON duration.
- Set 1OFF (Cyclic Disconnect) Time: Press the 'MD' button again to switch to the 1OFF setting state. Set the OFF duration using the same steps as for 1ON.
- Exit Setting Mode: After setting both ON and OFF times, press 'MD' again to save the settings and return to normal operation.
Display showing 'lon' for ON time setting.
Display showing time setting with flashing digits.
6.3 Video Demonstration
Video demonstrating the process of setting the ON and OFF times for the TM627 timer.
7. Maintenance
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to extreme temperatures, direct sunlight, or high humidity.
- The internal rechargeable battery is designed to maintain settings during power outages and does not require user maintenance or replacement under normal conditions.
- Do not attempt to open or repair the device yourself. Refer to qualified personnel for service.
8. Troubleshooting
- Display is off or unresponsive: Press the 'R' button for 3 seconds to wake the LCD. Ensure the device is properly powered and connected to the correct voltage.
- Incorrect timing or erratic behavior: Short terminals 3 and 4 to reset the device. After resetting, re-enter all timing parameters carefully.
- Relay not switching: Verify all wiring connections according to the diagrams in Section 5.2. Ensure the load current does not exceed the rated capacity (16A 250V AC). For higher loads, an external AC contactor must be used.
- Power supply issues: Ensure the correct voltage (12V DC, 24V DC, 110V AC, or 220V AC) is supplied to the device as per the model variant.
9. User Tips
- Multiple Appliances: This relay is designed for one group of ON/OFF cycles. If you need to control multiple appliances at different times or on different days, you may need multiple units or a more advanced multi-channel timer.
- Protection Film: Remember to remove the protective film from the display before use for optimal visibility.
- Quick Setting: Pressing and holding the '+' or '-' keys will allow for faster adjustment of time values.
10. Warranty and Support
For technical support or warranty inquiries, please contact the manufacturer or your retailer. Refer to the official user manual PDF for comprehensive details.
A detailed user manual in PDF format is available for download: SINOTIMER TM627 User Manual (PDF)