: Integrated vents at the back are critical for cooling; ensure they are not blocked during installation to prevent overheating.
Route the relay output terminals directly to your sealing machine's heating element (heating block TÉNs). Operating Instructions 1. Pre-Start Safety Checks
Only partially. The "b" revision may have different button functions, input ranges, or error codes. Compare the terminal layout carefully. If terminals match, the wiring is safe. For programming, assume differences.
: Do not touch terminals while the circuit is energized. Teqd-2301b Manual
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: Ensuring airtight seals for seeds, powders, and liquids.
: Do not install in flammable or explosive environments. : Integrated vents at the back are critical
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It is essential to understand the technical parameters to ensure proper integration. Available in 110V AC or 220V AC variants.
: Connect the relay output to the heating element. Standard outputs are often rated for 3A/240Vac resistive loads. Operation Guide TEQD-2301B is designed for straightforward manual control. Pre-Start Safety Checks Only partially
| Problem | Possible Cause | Solution | |---------|----------------|----------| | LCD blank, no LEDs | Power off | Check L/N (85–265V AC), fuse F1 (2A slow) | | Erratic input reading | Loose thermocouple wire | Re-tighten terminals 4-5; use shielded cable | | Output stuck at 4mA | Range scaling mismatch | Verify high/low range ≠ identical values | | No Modbus response | Wrong baud rate | Default 9600,8,N,1. Check termination resistor (120Ω) | | Alarm not triggering | Hysteresis too wide | Reduce hysteresis (default 5 units) |
| Problem | Possible Cause(s) | Suggested Action(s) | | :--- | :--- | :--- | | | - No power to the machine. - Blown fuse or tripped circuit breaker. - Loose or incorrect power wiring. | - Verify the machine is plugged in and the outlet has power. - Check and replace any blown fuses. - Inspect and tighten all power connections to the controller. | | Inaccurate Temperature | - Faulty or incorrectly connected thermocouple. - An aging or failing heating element. | - Verify the thermocouple wiring is secure and has correct polarity. - Test the heating element's resistance with a multimeter and replace if faulty. | | Temperature Fluctuates Widely | - The controller is set to a very high temperature for a light material, causing it to overshoot. - The heating element is failing. | - Try setting a lower temperature to achieve a stable seal. - Check the condition of the heating element. | | Sealer Not Getting Hot | - Faulty heating element. - Tripped internal safety cutout. - Failed output relay in the controller. | - Test the heating element and replace if necessary. - Check for and reset any internal thermal protectors. - If the output relay has failed, the controller will need to be replaced. | | Unit Fails to Regulate | - The controller itself has failed. | - Replace the unit. The TEQD-2301B is a reliable component, but all electronics have a lifespan. |
: Inspect the thermocouple tip located inside the machine heating block. Verify that positive and negative wires are attached to the correct terminal screws on the back of the controller. 3. Machine Fails to Heat Despite Controller Activation
The frontal layout of the TEQD-2301B focuses on immediate manual accessibility and scannability, intentionally omitting digital programming sub-menus to favor rapid floor adjustments:
Check the mechanical contact on the sensor bracket inside the machine's heater jaws. Ensure the thermocouple touches the metal firmly.