1. Introduction
This manual provides comprehensive instructions for the Baomain TBT7-F2 Digital Multi-Function Time Relay. This device is designed for precise timing control in various industrial and domestic applications, offering 20 distinct delay modes and a wide time range from 0.1 seconds to 99 days. Please read this manual thoroughly before installation and operation to ensure safe and correct usage.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the device:
- Ensure power is disconnected before installation, wiring, or maintenance.
- Installation and wiring should only be performed by qualified personnel.
- Verify that the supply voltage matches the device's specifications.
- Do not exceed the maximum rated current or switching voltage.
- Protect the device from moisture, dust, and extreme temperatures.
- This device is rated IP20; it is not protected against water ingress.
3. Product Overview
The Baomain TBT7-F2 is a compact digital time relay featuring a clear LED display and two control buttons for easy programming. It supports a wide range of AC/DC supply voltages and offers versatile timing functions for various control tasks.
Image 3.1: Overview of the Baomain TBT7-F2's time range and function features. It highlights the 0.1s to 99 days time range and 20 delay modes, including those controlled by power supply and signal.
Image 3.2: Angled view of the Baomain TBT7-F2 Digital Multi-Function Time Relay, showcasing its compact design and DIN rail mounting clips.
Key Features:
- 20 Functional Modes: Includes 5 power-controlled delay modes, 13 signal-controlled delay modes, and ON/OFF modes.
- Wide Time Range: Adjustable from 0.1 seconds to 99 days.
- Universal Supply Voltage: Operates on AC/DC 12V-240V.
- Dual SPDT Output: Two Single Pole Double Throw relay outputs, rated at 16A each.
- LED Indicators: Green LED for power supply, Red LED for output status.
- Compact Design: Only 18mm wide, suitable for 35mm DIN rail mounting.
4. Specifications
| Parameter | Value |
|---|---|
| Functional Modes | 20 |
| Time Range | 0.1 seconds to 99 days |
| Power Terminal | A1-A2 |
| Control Supply Voltage | AC/DC 12V-240V, 50-60Hz |
| Load | AC 0.09-3VA / DC 0.05-1.7W |
| Power Input | Max AC 6VA/1.9W |
| Supply Voltage Tolerance | -15%, +10% |
| Reset Time | Up to 200ms |
| Supply Indicator | Green LED |
| Output Indication | Red LED |
| Time Setting Method | Potentiometer |
| Time Deviation | 1% |
| Repeat Accuracy | 0.2% |
| Temperature Coefficient | 0.05%/°C, at 20°C |
| Output | SPDT x 2 |
| Rated Current | 16A x 2 |
| Switching Voltage | 250V AC / 24V DC |
| Minimum Breaking Capacity DC | 500mW |
| Mechanical Life | 1 x 10,000,000 cycles |
| Electrical Life (AC1) | 1 x 100,000 cycles |
| Operating Temperature | -20°C to 55°C |
| Storage Temperature | -35°C to 75°C |
| Protection Degree | IP20 |
| Overvoltage Category | III |
| Pollution Degree | 2 |
| Installation | 35mm DIN rail mount or screw mount |
| Max Cable Size | Solid wire max 1x2.5 or 2x1.5 / Ferrule max 1x2.5 (AWG12) |
| Dimensions (L*W*H) | 94 x 18 x 64 mm (3.7 x 0.70 x 2.52 inches) |
| Weight | 95 grams |
| Connector Type | Screw Terminal |
| Contact Material | Silver Alloy |
| Compliance | CE |
| Model Number | TBT7-F2 |
| Included Components | Time Relay, Instruction Manual |
5. Setup
5.1 Mounting
The TBT7-F2 time relay can be mounted on a standard 35mm DIN rail or secured using screws. Ensure sufficient space for wiring and ventilation.
5.2 Wiring
Refer to the wiring diagrams below for correct connection. Ensure all connections are secure and comply with local electrical codes. The device supports solid wires up to 1x2.5mm² or 2x1.5mm², and ferrules up to 1x2.5mm² (AWG12).
Image 5.1: Front and back views of the Baomain TBT7-F2, illustrating the terminal layout and internal wiring diagrams for various functions.
Image 5.2: Detailed relay contact diagram and external wiring diagram for the Baomain TBT7-F2. This shows the connections for the power supply (A1, A2), control input (S), and the two SPDT relay outputs (15, 16, 18 and 25, 26, 28).
- A1-A2: Power supply input (AC/DC 12V-240V).
- S: Control signal input.
- 15, 16, 18: First SPDT relay output (15=Common, 16=NC, 18=NO).
- 25, 26, 28: Second SPDT relay output (25=Common, 26=NC, 28=NO).
Note: The S-A2 connection can power loads (relay, lamp, contactor) even when the S input is closed, depending on the selected function mode.
6. Operating Instructions
The TBT7-F2 is programmed using two buttons: 'MD' (Mode) and '▲' (Up/Adjust). The LED display shows the current function mode and time settings.
6.1 Function Selection
The device offers 20 different delay modes. To select a function:
- Press and hold the 'MD' button for 3 seconds to enter/exit the function setting interface.
- The display will show 'Fu'. Use the '▲' button to cycle through functions 01 to 20.
- Short press 'MD' to confirm the function selection.
6.2 Delay Time Setting (T1, T2)
After selecting a function, you can set the delay times (T1 and T2, if applicable for the chosen function).
Image 6.1: Instructions for fast adjustment of delay time and detailed delay function settings using the MD and Up buttons. This diagram shows how to navigate menus and adjust time values.
- From the running state, short press 'MD' to enter the delay time setting interface.
- The display will show 't.1' for T1 setting. Short press '▲' to adjust the parameter value. Long press '▲' for rapid adjustment.
- Short press 'MD' to move to 't.2' for T2 setting (if available). Adjust T2 similarly.
- After setting T1 and T2, short press 'MD' to cycle through time units (seconds, minutes, hours, days).
- The device will automatically exit the setting mode after 60 seconds of inactivity or by pressing and holding 'MD' for 3 seconds to save and exit.
6.3 Functions Diagram
The following diagram illustrates the timing sequences for all 20 delay modes. 'Us' represents the supply voltage, 'S' represents the control signal, and 'R' represents the relay output status.
Image 6.2: Comprehensive diagram detailing the operational sequences for each of the 20 delay modes of the Baomain TBT7-F2 time relay. Each mode shows the relationship between power, signal, and relay output over time.
For detailed understanding of each mode (01-20), refer to the specific timing diagrams provided in Image 6.2. Each diagram shows how the relay output (R) behaves in response to the supply voltage (Us) and control signal (S).
7. Maintenance
The Baomain TBT7-F2 Digital Multi-Function Time Relay requires minimal maintenance. Follow these guidelines:
- Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Regularly inspect wiring connections to ensure they remain tight and secure.
- Avoid exposing the device to corrosive substances or excessive vibrations.
- Do not attempt to open or repair the device yourself, as this may void the warranty and pose safety risks.
8. Troubleshooting
If you encounter issues with your TBT7-F2 time relay, consider the following:
- No Power Indication (Green LED off): Check the power supply connections (A1-A2) and ensure the voltage is within the specified range (AC/DC 12V-240V).
- Relay Not Activating: Verify the selected function mode and time settings. Check the control signal input (S) if applicable to the mode. Ensure the load connected to the output terminals (15/16/18 or 25/26/28) is correctly wired and within the rated current/voltage limits.
- Incorrect Timing: Recheck the T1 and T2 settings and their corresponding time units (seconds, minutes, hours, days). Ensure the selected function mode matches your desired operation.
- Intermittent Operation: Inspect all wiring for loose connections. Ensure the operating environment is within the specified temperature range.
If the problem persists after checking these points, contact customer support.
9. Warranty and Support
Baomain products are manufactured to high-quality standards. For warranty information, please refer to the terms and conditions provided at the point of purchase or contact your vendor. Keep your purchase receipt as proof of purchase.
For technical support or inquiries, please contact your supplier or the manufacturer directly. Provide the model number (TBT7-F2) and a detailed description of the issue for efficient assistance.