Secop BDN50K-A Direct Current Compressor R600a 12/24V DC
Code number: 109Z0465
Electronic unit: Automotive
Compressors on pallet: 240
General Specifications
| Application | LBP/MBP |
| Application range | 8.5-17 / 19-34 VDC |
| Voltage range | 8.5-17 / 19-34 VDC |
Cooling Requirements
| Application | LBP | MBP |
| 32°C / 38°C / 43°C | S | S |
Note: S = Static cooling normally sufficient. In case fan cooling is used: condenser => fan => electronic => compressor.
Absolute Maximum Ratings
| Compressor compartment operating temperature | -10 to 55 °C |
| Max. compressor tilt angle for temporary operation | ±30° |
| Operating pressure range | See diagram to the right |
Compressor Compartment Temperature Protection is available. Please refer to controller instruction sheet. Any levels of stress exceeding the absolute maximum value of machine compartment temperature range or operating pressure range or tilt angle may damage the device. Prolonged exposure to stress above the recommended operating conditions may also affect the device's reliability.
Motor
| Motor type | Permanent magnet, brushless DC |
| Speed | Variable speed |
| Resistance, each of the three windings (25°C) | 3.1 Ω |
Design
| Displacement | 2.60 cm³ |
| Oil quantity (type) | 53 cm³ (polyolester) |
| Maximum refrigerant charge | 70 g |
| Free gas volume in compressor | 472 cm³ |
| Weight - Compressor/Electronic unit | 1.37 / 0.14 kg |
Standard Battery Protection Settings
| Voltage (0.1 steps) | Cut out level (VDC) | Default (VDC) | Min. value (VDC) | Max. value (VDC) |
| 12V ± 0.3V DC, all values | Cut out level | 10.4 | 8.5 | 17 |
| 24V ± 0.3V DC, all values | Cut out level | 22.8 | 19 | 32 |
| ± 0.3V DC, all values range | Cut out level | 10.4 | 8.5 | 32 |
| Battery cut-in difference | VDC | 1.3 | 0.5 | 10 |
Dimensions
| Height | A: 89.0 mm |
| B: 82.4 mm | |
| B1: 48.7 mm | |
| B2: 45.8 mm | |
| Suction connector | location/I.D. mm | angle C: 6.25° | D: Copper | Rubber plug |
| Process connector | location/I.D. mm | angle D: 77.9° | Copper | Rubber plug |
| Discharge connector | location/I.D. mm | angle E: 86.9° | Cu-plated steel | Rubber plug |
| Connector tolerance | I.D. mm: ±0.09, on 5.0 +0.12/+0.20 |
Remarks: Please follow the brazing instructions on page 3 (Product Bulletin DES.N.101.M).
Performance Data (Capacity and Power Consumption)
Capacity (EN 12900 Household/CECOMAF) - 12V DC, static cooling
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 16.8 | 23.3 | 25.9 | 31.3 | 40.9 | 52.2 | 65.4 | 80.5 | 97.7 |
| 3,000 | 23.8 | 32.6 | 35.9 | 43.0 | 55.4 | 70.0 | 87.0 | 106.8 | |
| 4,000 | 32.5 | 44.7 | 49.2 | 58.9 | 75.8 | 95.7 | 119.1 | 146.4 | |
| 4,500 | 36.0 | 50.2 | 55.3 | 65.5 | 82.8 | 103.2 | 127.9 |
Capacity (ASHRAE LBP) - 12V DC, static cooling
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 20.6 | 28.5 | 31.6 | 38.3 | 50.0 | 63.8 | 79.9 | 98.4 | 119.4 |
| 3,000 | 29.3 | 39.9 | 43.9 | 52.6 | 67.6 | 85.4 | 106.2 | 130.4 | |
| 4,000 | 39.8 | 54.6 | 60.2 | 72.0 | 92.6 | 116.9 | 145.5 | 178.9 | |
| 4,500 | 44.6 | 62.0 | 68.1 | 80.6 | 101.6 | 126.5 | 156.4 |
Power consumption - 12V DC, static cooling
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 16.8 | 20.2 | 21.4 | 24.0 | 28.2 | 32.5 | 36.8 | 41.1 | 45.1 |
| 3,000 | 21.9 | 26.6 | 28.2 | 31.3 | 36.1 | 40.9 | 45.6 | 50.2 | |
| 4,000 | 30.1 | 36.9 | 39.3 | 43.8 | 50.6 | 57.4 | 64.3 | 71.2 | |
| 4,500 | 34.4 | 41.8 | 44.3 | 49.0 | 56.0 | 62.9 | 69.7 |
Current consumption (for 24V applications the following must be halved)
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 1.40 | 1.68 | 1.79 | 2.00 | 2.35 | 2.71 | 3.07 | 3.42 | 3.76 |
| 3,000 | 1.82 | 2.22 | 2.35 | 2.61 | 3.01 | 3.41 | 3.80 | 4.19 | |
| 4,000 | 2.51 | 3.08 | 3.27 | 3.65 | 4.22 | 4.79 | 5.36 | 5.93 | |
| 4,500 | 2.87 | 3.49 | 3.69 | 4.09 | 4.67 | 5.24 | 5.80 |
COP (EN 12900 Household/CECOMAF) - 12V DC, static cooling
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 1.00 | 1.16 | 1.21 | 1.30 | 1.45 | 1.61 | 1.78 | 1.96 | 2.17 |
| 3,000 | 1.09 | 1.23 | 1.27 | 1.37 | 1.53 | 1.71 | 1.91 | 2.13 | |
| 4,000 | 1.08 | 1.21 | 1.25 | 1.35 | 1.50 | 1.67 | 1.85 | 2.06 | |
| 4,500 | 1.05 | 1.20 | 1.25 | 1.34 | 1.48 | 1.64 | 1.84 |
COP (ASHRAE LBP) - 12V DC, static cooling
| rpm \ °C | -30 | -25 | -23.3 | -20 | -15 | -10 | -5 | 0 | 5 |
| 2,300 | 1.24 | 1.42 | 1.48 | 1.53 | 1.60 | 1.79 | 1.98 | 2.18 | 2.41 |
| 3,000 | 1.33 | 1.48 | 1.53 | 1.65 | 1.85 | 2.04 | 2.27 | 2.53 | |
| 4,000 | 1.32 | 1.48 | 1.53 | 1.65 | 1.85 | 2.04 | 2.27 | 2.53 | |
| 4,500 | 1.30 | 1.48 | 1.54 | 1.65 | 1.82 | 2.02 | 2.25 |
Operational Errors (TOOL4COOL® or LED flashes)
| Error code or LED flashes | Error type | Description |
| 7 | Communication error | Communication of master controller stopped for 15 minutes (default). |
| 6 | Thermostat failure | If a NTC thermistor is short-circuit or has no connection, the electronic unit will enter manual mode. |
| 5 | Thermal cut-out of electronic unit | PCB or compressor compartment temperature exceeds minimum or maximum limits. |
| 4 | Minimum motor speed error | If the refrigeration system is too heavily loaded, the motor cannot maintain min. speed at approximately 2,150 rpm. |
| 3 | Motor start error | The rotor is blocked or the differential pressure in the refrigeration system is too high (>5 bar). |
| 2 | Fan over-current cut-out | The fan is overloading the electronic unit. |
| 1 | Battery protection cut-out | The voltage is outside the cut-out setting. |
Wire Dimensions DC
| Cross section | AWG | Max. length* 12V operation | Max. length* 24V operation | ||
| [mm²] | [Gauge] | [m] | [ft.] | [m] | [ft.] |
| 2.5 | 12 | 5 | 16 | 4 | 13 |
| 4 | 10 | 8 | 26 | 6 | 20 |
| 6 | 8 | 10 | 33 | 8 | 26 |
| 10 | 6 | 16 | 52 | 12 | 39 |
*Length between battery and electronic unit.
Accessories for BDN50K-A
| Item | Code number |
| Mounting Bolt joint for one compressor | 118-1960 |
| Secop Gateway | 105N9518 |
Test conditions
| EN 12900 CECOMAF | ASHRAE LBP | |
| Condensing temperature | 55°C | 54.4°C |
| Ambient temperature | 32°C | 32°C |
| Suction gas temperature | 32°C | 32°C |
| Liquid temperature | No subcooling | 32°C |
Wiring Diagram
Spade connectors 6.3 mm | 1/4 in.
The diagram shows a typical wiring setup for the Secop BDN50K-A compressor, including connections for power supply, Secop Gateway, PC option (TOOL4COOL®), display, and NTC resistor. It illustrates the use of spade connectors and highlights the different connection points for various options.
Key connections:
- Power supply: Connected to +, LIN, and GND.
- Secop Gateway: Connects to +, LIN, and GND.
- PC option (TOOL4COOL®): Connects to +, LIN, and GND.
- Display: Connected to +, LIN, and GND.
- NTC resistor: Connected to - t° terminals.
- Fuse and Main switch are included in the power circuit.
- LED can be connected to + and LIN via a series resistor.
Brazing Instructions
BD Nano Discharge Connector
Secop BDN45F/-A, BDN50K/-A, MB3CKV, and BDN-EV compressors utilize a special discharge connector element designed to optimize energy consumption. This element is made of plastic and is sensitive to high heat exposure.
Important considerations during brazing:
- When brazing a tube into the discharge connector, ensure the area with the discharge connector element does not exceed 150°C / 302°F.
- Do not heat the bottom of the connector directly.
- Use a fork burner and/or a damp cloth if necessary. A protective plate can also shield the discharge connector element from direct flame heat.
- Limit brazing to 10 seconds and allow a 5-minute interval before the next soldering attempt.
Further information: Product Bulletin – Brazing Technique for Compressor Connectors (DES.N.600.A1.02).
