Voltage calibration. Used to correct minor discrepancies in the display vs. actual voltage. Wiring Overview Input (Power):
Always handle the board with care to avoid damage from electrostatic discharge (ESD).
Example: | Problem | Possible cause | Solution | |-----------------------------|-------------------------------------|-----------------------------------| | No display | Power supply issue / reverse polarity | Check voltage, correct wiring | | Erratic temperature reading | Wrong sensor type / bad connection | Use NTC 10K 3950, check terminals | | Relay does not switch | Incorrect mode (P2) or hysteresis | Set P2 to H or C, adjust P1 | | Temperature overshoot | Hysteresis too high / sensor placement | Reduce P1, move sensor closer to load |
Elias wired his battery to the center terminals. The board hummed to life, its bright red digits showing . To Elias, this wasn't just a voltage readout; it was the heartbeat of his workshop. He followed the "sacred text" (the manual) to set the boundaries: Xh-m608 Manual
If you are holding this board, here is how you actually program it: 1. Wiring Diagram
Act as a switch; connect one leg of your charger or load through these terminals.
Wait 3 seconds for the display to stop flashing, saving the setting. B. Setting the Upper Limit (U₂) - Reconnect/Start Voltage Voltage calibration
Features a programmable timing function useful for battery capacity testing and maintenance.
The module features two tactile pushbuttons used to set the Upper Voltage limit (U₁) and Lower Voltage limit (U₂). A. Setting the Lower Limit (U₁) - Disconnect Voltage
If you notice the display doesn't match your multimeter, most XH-M608 boards allow for . Disconnect power. Hold the SET button while reconnecting power. Wiring Overview Input (Power): Always handle the board
| Mode | Description | Relay Behavior | |------|-------------|----------------| | | Voltmeter | Relay does not activate | | P | Protection (under/over voltage) | Relay ON only when P1 ≤ Voltage ≤ P2 | | C | Charge mode | Relay ON when Voltage ≤ P1, OFF when Voltage ≥ P2 | | F | Discharge mode | Relay ON when Voltage ≥ P2, OFF when Voltage ≤ P1 |
Route the positive charging wire from your power supply to the relay terminal.