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DCPC Factory Firmware User Guide

This user guide covers the operation, navigation, and configuration of the DCPC factory firmware. This firmware integrates most system functionalities and setup controls into a single interface.

1. User Control Interface

The user interface consists of a 1" OLED display and three push buttons: [UP], [OK], and [DOWN].

User control interface

Main Display

When the DCPC starts up, it shows the Main Display, which summarizes real-time sensor readings and pump status:

Main display interface

  • Battery: Current battery voltage (in Volts).
  • Level A / Level B: Water level measured on Port A and Port B (in meters).
  • Mode: Current operational mode—Automatic (auto) or Manual (manu).
  • Pump: Current pump activation status (ON or OFF).
  • Contact A / Contact B: Contact relay status on Port A and Port B (Open or Closed).

2. Navigating Menus

The Main Display is your default home screen.

  • Access the Main Menu: Press [OK] from the Main Display.
  • Return to Main Display: Press and hold [OK] for more than one second (Long Press) from any menu item.
  • Standard Workflow: Press [OK] to enter the menu, use [UP] or [DOWN] to navigate to or adjust a setting, and then long-press [OK] to save and return to the home screen.

Button Map

Button Action Type Function
[UP] Short Press Navigate up / Increase setting value
[DOWN] Short Press Navigate down / Decrease setting value
[OK] Short Press Enter menu / Confirm selection
[OK] Long Press (>1s) Return to Main Display

3. Menu Map

Main Menu
├── Pump Rst
├── Mode
├── Battery
│   ├── On/Off
│   ├── Low Thres
│   └── Hi Thres
├── Contact A (or B)
│   ├── On/Off
│   └── Direction
├── Level A (or B)
│   ├── On/Off
│   ├── Low Thres
│   ├── Hi Thres
│   ├── Direction
│   └── Range
├── S Timeout
│   ├── On/Off
│   └── Duration
└── Factory Reset

4. Configuration & Settings

Pump Rst (Pump Reset)

Re-initializes the internal pump status calculation and clears active faults.

Mode

Selects how the pump is controlled:

  • Manual (manu): Allows manual control of the pump directly from the Main Display using the [UP] (Turn ON) and [DOWN] (Turn OFF) buttons.
  • Automatic (auto): Automatically controls pump activation based on battery level and connected sensor inputs. The [UP] and [DOWN] buttons are disabled on the Main Display while in Automatic mode.

⚠️ Warning: In Manual Mode, the pump can be activated regardless of battery or sensor conditions. Use with caution and strictly for testing purposes.

Battery Settings

  • On/Off: Enables or disables battery-level pump protection.
  • Note: Disabling this setting is not recommended, as it risks over-discharging and damaging the battery.
  • Low Thres (Low Threshold): Sets the voltage cutoff limit below which the pump stops to preserve battery health. Refer to your battery documentation for safe minimum voltage limits.
  • Hi Thres (High Threshold): Sets the voltage threshold required before the pump can restart. Refer to your solar charger documentation for appropriate values.
  • Note: Setting this too high may prevent the pump from ever turning back on.

Contact A & Contact B Settings

  • On/Off: Enables or disables digital input Port A or B. When disabled, the contact state will not affect pump operation, and its reading will be hidden from the Main Display.
  • Direction: Defines the active trigger state for the contact:
  • OPENED: The pump activates when the relay/contact opens.
  • CLOSED: The pump activates when the relay/contact closes.

Level A & Level B Settings

  • On/Off: Enables or disables level sensor Port A or B. When disabled, sensor readings are hidden from the Main Display and ignored by system logic.
  • Low Thres / High Thres: Minimum and maximum liquid level limits (in meters) measured above the sensor. Behavior depends on the selected Direction.
  • Range: Defines the measurement range of the attached sensor in meters.
  • Example: A 2 m sensor outputs 20 mA at 2 m and 4 mA at 0 m.
  • Direction: Determines whether the pump is configured to FILL or EMPTY a tank:
Current Water Level FILL Mode Action EMPTY Mode Action
Below Low Threshold (< Low) Pump ON Pump OFF
Above High Threshold (> High) Pump OFF Pump ON

S Timeout (Safety Timeout)

Prevents pump burnout and motor overheating. When enabled, the pump runs on a duty cycle—stopping for 2 minutes after every 13 minutes of continuous operation.

  • On/Off: Enables or disables the safety timeout protection.
  • Duration: Sets the maximum number of continuous run cycles allowed before the system shuts down the pump completely. Once tripped, the pump remains off until a Pump Reset is performed.

Factory Reset

Restores all system configurations to default factory settings.

  • To confirm reset: Select Yes using [UP], then press [OK].
  • To cancel reset: Press [DOWN], then press [OK].