Mauch - PL-200 Sensor Board + CFK Enclosure

General

The "Premium Line" (PL) voltage and current sensor from Mauch is used in combination with the PL BEC or the Mauch Sensor Hub X2-V2.

The PL-xxx boards are based on the well-known Allegro ACS758 Hall current sensors: ACS758-050U for the 50A version, ACS758-100U for the 100A version, and ACS758-200U for the 200A version. The electronics on the board are powered by a PL-Series or PC-Series BEC, and the offset shifting is implemented using an OP from Microchip (MCP601), specially designed for analog inputs of microprocessors.

The sensor board is only installed in the "positive" (red) main wire from the LiPo, while the "negative" (black) wire remains untouched, reducing the risk of short circuits on the sensor board.

The voltage measurement is equipped with an installed filter that minimizes the risk of false RTL triggers, which could happen if flying in very windy conditions when the motor speed suddenly increases to keep the flight level.

Benefits of This Design:

• Even if something goes wrong with the current board, the FC analog input is protected, as the maximum output voltage of the sensor board is 3.3V.
• Due to the offset shifting, the current measurement uses the full analog input range of the flight controller from 0.0V (0A) to 3.3V (50A / 100A / 200A), so there's no need to adjust the parameter "BATT_AMP_OFFSET." This leads to a more stable display on the OSD or MP.
• Many Attoboards or even the original 3DR power module suffer from a sudden voltage drop during hovering (0.5-1.5V) caused by the resistance of the connected connectors and main battery wires. In our sensor boards, this voltage drop error is minimized, as we only measure the resistance of the positive main wire and ensure the BEC power supply is separated and can be connected as close as possible to the battery connector.
• Delivery includes CFK housing.

Improved Design Compared to HS-Series:

• No more HV or LV sensors; the user can select the voltage range via a solder bridge.
• Current measurement accuracy improved to +/- 0.5% (HS-Series: +/- 1%).
• No more DF13 connectors; the connector is Molex Clik-Mate / 1.25mm.
• Improved filter network; the measured current is more stable.
• Delivery includes CFK housing.

Voltage Selection:

• First, select the correct voltage measurement range according to the battery you use.
• Solder bridge open = Up to 20S (max. 85V).
• Please use the voltage divider from the final test result (approx. 26.8).
• Solder bridge closed = Up to 7S (max. 33V).
• Use a voltage divider of 10.0. The measurement will be quite accurate. However, you can always measure the main battery voltage with a DVM and readjust if necessary.

Setup in MissionPlanner:

Please follow the procedure here: Link to Setup

Troubleshooting:

If you have trouble getting current or voltage readings from the sensor board, please check the following:

• Is the input voltage in the range of 4.95-5.05V?
• Is the blue LED on the sensor board on?
• Is the sensor installed in the correct current flow direction?

Specifications

• 50A - Current/Voltage measurement sensor board, based on the Allegro Hall Sensor ACS758-050U.
• Voltage range up to 20S (85V) with solder bridge open and up to 7S (30V) with solder bridge closed. Please check the manual page for more details.
• This sensor board connects directly to any Premium-Line BEC or Sensor Hub X2-V2.
• Standard connection includes 2x 10 cm AWG12 wires (red).
• REM: The connector is Molex / Clik-Mate / 1.25mm / 4p (5023800400).
• Without CFK housing: 27.5 x 19.5 x 10.5mm / 17g (with 2x 10 cm 12AWG).
• With CFK housing: 43.5 x 23.0 x 15mm / 22g (with 2x 10 cm 12AWG).
• Delivery in PP box: 55 x 55 x 20mm / 33g.
• Delivery without sensor cable (comes with the BECs), with CFK housing.
• REM: If you want to use your own BEC, please order a sensor cable (040) and ensure that the supplied voltage is within 4.95-5.05V.