1. Product Overview
The SINOTIMER MT-S is a versatile digital PID temperature controller designed for precise temperature management in both heating and cooling applications. It features a dual-line, three-digit display for process value (PV) and set value (SV), and supports multiple thermocouple input types. This manual provides essential information for the safe and efficient operation of your device.
2. Specifications
| Feature | Specification |
|---|---|
| Power Supply | AC100-240V 50/60HZ |
| Temperature Setting Range | -50 ~ +999 ℃/°F |
| Input Thermocouple | K, J, E, N types (user selectable) |
| Display | Two lines, Three digits (Celsius ℃ / Fahrenheit °F selectable) |
| Display Resolution | 1°C / 1°F |
| Control Precision | ± 0.5%FS |
| Control Mode | PID, ON/OFF (ON/OFF Control when P=0) |
| Output | One group control output: Relay contacts 3A @250VAC OR Voltage impulse output 12VDC for external SSR |
| Alarm | One alarm, 6 kinds of alarm modes (high deviation, low deviation, process value alarm) |
| Power Consumption | ≤10VA |
| Ambient Temperature | 0-50°C, 30-85%RH (non-corrosive gas) |
| Item Size (MT-S) | 48 x 48mm |
| Installation Hole Size (MT-S) | 45 x 45mm |
3. Setup and Installation
3.1 Panel Installation
The MT-S model requires an installation hole of 45 x 45mm. Ensure sufficient space for wiring and ventilation behind the panel.
3.2 Wiring Connections
The controller supports two main output methods and various thermocouple inputs. Refer to the diagram below for proper wiring.
Output Methods:
- Relay Output: Directly connected to the heat pipe or connected to an AC contactor. The relay output has a contact capacity of 5A/220V.
- Solid State Output (SSR): Connected to a Solid State Relay (SSR). This output provides a 12VDC voltage impulse to control an external DC-controlled AC solid state relay.
Input Method:
- The controller accepts thermocouple inputs with index numbers K, J, E, or N. Ensure the correct thermocouple type is selected in the controller's settings to match your sensor.
Warning: All wiring should be performed by a qualified electrician to prevent electric shock or damage to the device. Ensure power is disconnected before making any connections.
4. Operating Instructions
4.1 Panel Functions
The front panel of the MT-S controller features a display and several buttons:
- PV (Process Value): Displays the measured temperature value.
- SV (Set Value): Displays the target temperature value.
- OUT (Output Indicator Lamp): Illuminates when the control output is active.
- AT (PID Automatic Indicator Lamp): Illuminates when PID auto-tuning is active.
- AL1 (Alarm Indicator Lamp): Illuminates when an alarm condition is met.
- ▲ (Up Arrow): Increases numbers or values during setting.
- ▼ (Down Arrow): Decreases numbers or values during setting.
- ◀ (Shift Key): Moves the cursor to shift digits during setting.
- MODE Button: Used for calling up parameters and registering set values.
4.2 Setting Temperature
- Press the MODE button briefly to enter the set value adjustment mode. The SV display will flash.
- Use the ▲ and ▼ buttons to adjust the desired temperature.
- Use the ◀ (Shift) button to move between digits for faster adjustment.
- Press the MODE button again to confirm the new set value. The display will stop flashing.
4.3 Control Modes (PID / ON/OFF)
The controller supports both PID (Proportional-Integral-Derivative) and ON/OFF control modes. ON/OFF control is activated when the 'P' (Proportional band) parameter is set to 0. For most applications requiring precise temperature stability, PID control is recommended.
4.4 Alarm Settings
The controller includes one alarm with 6 configurable modes, such as high deviation, low deviation, or process value alarm. Refer to the detailed English manual (included in the package) for specific instructions on configuring alarm parameters using the MODE button and arrow keys.
5. Maintenance
The SINOTIMER MT-S temperature controller is designed for reliable operation with minimal maintenance. Follow these guidelines to ensure longevity:
- Cleaning: Gently wipe the panel with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the display or casing.
- Environment: Ensure the operating environment adheres to the specified ambient temperature (0-50°C) and humidity (30-85%RH) with no corrosive gases.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Ventilation: Ensure that the ventilation slots on the sides of the controller are not obstructed to prevent overheating.
6. Troubleshooting
If you encounter issues with your SINOTIMER MT-S controller, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows 'HHHH' or 'LLLL' | Thermocouple open circuit or short circuit, or incorrect type selected. | Check thermocouple wiring, ensure it's not damaged. Verify the correct thermocouple type (K, J, E, N) is configured in the controller settings. |
| Temperature reading is inaccurate | Incorrect thermocouple type, sensor not properly installed, or environmental interference. | Confirm thermocouple type matches setting. Ensure sensor is in good contact with the measured medium. Check for strong electromagnetic interference. |
| Output (OUT lamp) not activating | Wiring issue, set value not reached, or control mode misconfigured. | Check output wiring. Ensure the set value is appropriate for heating/cooling. Verify PID or ON/OFF parameters are correctly set. |
| Controller does not power on | No power supply or incorrect voltage. | Check power connections and ensure AC100-240V supply. |
For more complex issues, consult the full English manual provided with the product or contact customer support.
7. User Tips
- Initial Setup: Always perform a quick test after installation to ensure the controller responds correctly to temperature changes and output commands.
- PID Tuning: For optimal performance, especially in systems with varying loads or thermal inertia, consider using the auto-tuning feature (if available and detailed in the full manual) or manually tuning the PID parameters.
- Safety First: When working with high temperatures or electrical connections, always prioritize safety. Use appropriate personal protective equipment and ensure all power is off during installation or maintenance.
- Documentation: Keep the included English manual in a safe place for future reference, as it contains detailed parameter settings and advanced functions.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or contact the seller directly. Keep your purchase receipt as proof of purchase.