Table of contents
show
Danfoss BD35F Compressors Controller User Manual
How to Use the BD35 Compressor Controller
Using the BD35 compressor controller is straightforward once properly connected. Here’s a step-by-step guide:
- Power Connection: Connect the controller to a 12V or 24V DC power source.
- Thermostat or Resistor: Install a thermostat between terminal “T” and the negative terminal or place a resistor between “C” and “T” to manually control compressor speed.
- Compressor Connection: Connect terminals C, S, and R to the compressor windings as labeled.
- Fan Control: If your system includes a fan, wire it to the “F” terminal for automatic operation with the compressor.
- Start-Up: Once all components are connected, the compressor will operate based on thermostat demand or resistor settings.
Operating Instruction
Assembly Instructions
Compressor Wiring:
- Connect compressor pins: “C” (Common), “S” (Start), and “R” (Run) as labeled.
- Secure connections with crimp terminals or soldered joints to prevent vibrations loosening them.
Power Connection:
- Connect a 12V or 24V DC supply to “+” and “–”.
- Ensure wiring is appropriately rated for current load.
Thermostat or Resistor Setup:
- Thermostat wire goes between terminal “T” and ground.
- For speed control via resistor, install the resistor between “C” and “T”.
Fan Installation:
- Connect fan wires to terminal “F” and “–”.
- Make sure the fan’s voltage matches system voltage and doesn’t exceed 0.5A.
Final Inspection:
- Double-check polarity.
- Ensure all wires are tightly secured.
- Power on the system and observe the LED indicator for faults.
Features
- Automatic Voltage Detection: Works with both 12V and 24V DC systems.
- Variable Speed Operation: Speeds range from 2,000 to 3,500 RPM via resistor or thermostat.
- Soft Start Function: Reduces start-up current to protect components.
- Integrated Fan Control: Activates fan when the compressor is running.
- LED Diagnostic System: Indicates faults like low voltage, overload, or fan issues.
- Energy Efficiency: Ideal for off-grid applications like RVs, boats, and solar systems.
Specifications
| Parameter | Specification |
|---|---|
| Input Voltage | 12V DC / 24V DC |
| Start-Up Voltage (12V) | 10.4V |
| Cut-Out Voltage (12V) | 9.6V |
| Start-Up Voltage (24V) | 22.8V |
| Cut-Out Voltage (24V) | 21.3V |
| Compressor Speed Range | 2,000 – 3,500 RPM |
| Fan Voltage | Matches supply (12V/24V) |
| Max Fan Current | 0.5 Amps |
| Control Signal Input | Thermostat or Resistor |
| Protection Features | Overload, short circuit, fan, low/high voltage |
| Dimensions (Controller Module) | Compact and mountable |
Troubleshooting
| LED Blinks | Fault Type | Solution |
|---|---|---|
| 1 Blink | Low Voltage | Check battery voltage; recharge or replace. |
| 2 Blinks | Fan Overcurrent | Inspect or replace fan; check wiring. |
| 3 Blinks | Motor Start Error | Verify compressor wiring; ensure no mechanical block. |
| 4 Blinks | Compressor Overload | Let system cool; check for blockage or voltage issues. |
FAQS
How much power does a Danfoss bd35f consume?
- The consumption rate is typically 60 amp hours a day, which breaks down to 2.5 amp hours or 30 watts per hour.
How to test a 12V compressor?
- Turn on the fridge, and using the multimeter, measure the voltage across the compressor terminals.
What is idle power consumption?
- Home idle load is the continuous residential electric energy consumption as measured by smart meters
What is the main function of a compressor?
- A compressor is a machine or tool used to reduce the volume of gas or air and increase pressure.
How to check compressor voltage?
- Set the multimeter to volts AC or volts DC as required. Plug the appliance’s. Power cord back in since the refrigerator.
How do you inspect a compressor?
- Take service readings (air, oil, water, temperature, and pressure)
- Check for air, water, and oil leakages.
- Check the air intake chamber.
- Check all the various filters and filter elements.
- Check and adjust the various valves and switches.
What is the basic principle of compressor?
- The working principle of a reciprocating air compressor is to draw gas through an inlet, and then move the gas through a cavity or chamber that decreases in size.
How to maintenance a compressor?
- KEEP AIR COMPRESSOR INTERCOOLER’S CLEAN.
- KEEP AIR COMPRESSOR AFTERCOOLER’S CLEAN.
- ENSURE AIR COMPRESSOR OIL COOLER IS WORKING PROPERLY.
- TEST COMPRESSOR OIL.
- CHANGE COMPRESSOR INLET AIR FILTER AND MONITOR PRESSURE.
- CHECK FOR CLOGGED TRAPS OR STUCK OPEN VALVES.
How the compressor is working?
- These use a rotating disk to impart velocity to the air, which is then converted into pressure.
DOWNLOAD PDF
978ac526380542f0c2c795e476a1799a5f0e650cb22f959f5ac5d5e6ad73c5b7_optim