Secop BDN45F Direct Current Compressor

General Information

Code number (without electronic unit): 109Z0400

Electronic unit - Leisure: 1012740, 40 pcs: 101N2741

Compressors on pallet: 240

Approvals: UL/CB

Application

Application range: LBP/MBP

Voltage range: 9.6 - 17 V (12V), 19 - 34 V (24V)

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

Parameter	Value	Unit
Machine compartment temperature for compressor operation	-10 to 50	°C
Max. compressor tilt angle for temporary operation	±30°
Operating pressure range	See diagram

Warning: Exceeding absolute maximum values for temperature, pressure, or tilt angle may damage the device. Prolonged exposure to conditions above recommended operating conditions may affect reliability.

Motor

Motor type: Permanent magnet, brushless DC

Speed: Variable speed

Resistance, each of the three windings (25°C): 3.1 Ω

Design

Parameter	Value	Unit	Comment
Displacement	1.42	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		Min. value
Voltage (0.1 steps)	Unit	VDC	VDC	VDC
12V ± 0.3V DC, all values		10.4 (9.6 - 17)
24V ± 0.3V DC, all values		22.8 (19 - 32)
Battery cut-in difference	VDC	1.3 (0.5 - 10)

Dimensions

Dimension	Value (mm)	Angle	Material / Comment
Height (A)	89.0
B	82.4
B1	48.7
B2	45.8
Suction connector (C)	6.2 \| 5°	5°	Copper \| Rubber plug
Process connector (D)	6.2 \| 77.9°	77.9°	Copper \| Rubber plug
Discharge connector (E)	5.0 \| 86.9°	86.9°	Cu-plated steel \| Rubber plug
Connector tolerance	±0.09, on 5.0 +0.12/+0.20

Diagram showing compressor dimensions and connector locations (A, B, B1, B2, C, D, E).

Performance Data (R134a)

Capacity (EN 12900 Household/CECOMAF)

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	14.3	19.9	22.2	27.1	36.0	47.0	60.1	75.6	93.8
3,000	18.5	26.2	29.4	36.4	49.0	64.0	81.5	102
4,000	25.2	36.6	41.2	50.9	67.6	86.5	107.4	129.9
4,500	28.7	42.0	47.3	58.4	77.4	98.4	121.2

Capacity (ASHRAE LBP)

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	17.9	24.9	27.6	33.7	44.8	58.4	74.7	94.1	116.7
3,000	23.1	32.7	36.6	45.2	60.8	79.5	101.3	126.3
4,000	31.4	45.5	51.1	63.1	83.8	107.3	133.3	161.4
4,500	35.7	52.2	58.7	72.4	95.9	122.0	150.4

Power consumption

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	15.9	19.0	20.2	22.6	26.5	30.8	35.3	40.1	45.1
3,000	19.2	23.3	24.8	28.0	33.1	38.4	43.6	48.6
4,000	25.1	31.3	33.5	37.9	44.7	51.4	57.6	62.9
4,500	28.8	36.1	38.7	43.9	51.8	59.3	66.2

Current consumption (for 24V applications the following must be halved)

COP (EN 12900 Household/CECOMAF)

rpm \ °C	12V DC, static cooling (W/W)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	0.90	1.05	1.10	1.20	1.36	1.52	1.70	1.88	2.08
3,000	0.96	1.13	1.18	1.30	1.48	1.67	1.87	2.09
4,000	1.00	1.17	1.23	1.34	1.51	1.68	1.86	2.06
4,500	1.00	1.16	1.22	1.33	1.49	1.66	1.83

COP (ASHRAE LBP)

rpm \ °C	12V DC, static cooling (W/W)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	1.13	1.31	1.37	1.49	1.69	1.90	2.11	2.34	2.59
3,000	1.20	1.40	1.47	1.62	1.84	2.07	2.32	2.60
4,000	1.25	1.45	1.53	1.66	1.87	2.09	2.35	2.56
4,500	1.24	1.45	1.52	1.65	1.85	2.06	2.27

Performance Data (R1234yf)

Capacity (EN 12900 Household/CECOMAF)

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	15.8	21.2	23.4	28.1	36.5	46.7	58.8	72.9	89.2
3,000	20.4	28.0	31.0	37.7	49.6	63.7	79.8	98.0
4,000	27.8	39.0	43.4	52.7	68.5	86.1	105.1	125.3
4,500	31.7	44.8	49.8	60.4	78.2	97.7	118.5

Capacity (ASHRAE LBP)

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	20.6	27.7	30.5	36.5	47.5	60.7	76.4	94.8	116.2
3,000	26.6	36.3	40.3	48.9	64.4	82.6	103.6	127.4
4,000	36.1	50.6	56.3	68.3	88.7	111.5	136.4	162.9
4,500	41.2	58.0	64.5	78.2	101.2	126.5	153.7

Power consumption

rpm \ °C	12V DC, static cooling (Watt)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	18.0	20.9	21.9	24.1	27.6	31.5	35.6	39.9	44.2
3,000	21.6	25.4	26.9	29.8	34.5	39.3	44.0	48.4
4,000	28.3	34.1	36.2	40.3	46.6	52.6	58.1	62.7
4,500	32.5	39.3	41.8	46.6	53.8	60.6	66.6

Current consumption (for 24V applications the following must be halved)

COP (EN 12900 Household/CECOMAF)

rpm \ °C	12V DC, static cooling (W/W)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	0.88	1.02	1.07	1.17	1.32	1.48	1.65	1.83	2.02
3,000	0.94	1.10	1.15	1.27	1.44	1.62	1.81	2.03
4,000	0.98	1.14	1.20	1.31	1.47	1.64	1.81	2.00
4,500	0.98	1.14	1.19	1.30	1.45	1.61	1.78

COP (ASHRAE LBP)

rpm \ °C	12V DC, static cooling (W/W)
rpm \ °C	-30	-25	-23.3	-20	-15	-10	-5	0	5
2,300	1.15	1.33	1.39	1.52	1.72	1.93	2.15	2.34	2.59
3,000	1.23	1.43	1.50	1.64	1.87	2.10	2.32	2.60
4,000	1.28	1.48	1.55	1.69	1.90	2.12	2.35	2.56
4,500	1.27	1.47	1.52	1.65	1.85	2.06	2.27

Wiring and Electrical Information

Wire Dimensions DC:

Cross section	AWG	Max. length* (12V operation)		Max. length* (24V operation)
Cross section	AWG	[mm²]	[Gauge]	[m]	[ft.]	[m]	[ft.]
2.5	12	2.5	8	5	16
4	10	4	13	8	26
6	8	6	20	12	39
10	6	10	33	20	66

*Length between battery and electronic unit

Accessories:

Mounting: Bolt joint for one compressor (Code number: 118-1960)
Secop Gateway (Code number: 105N9518)

Test conditions: EN 12900 CECOMAF, ASHRAE LBP

Diagrams:

Schematic diagram of compressor connections including power supply, display, Secop Gateway, and optional PC connection. Shows spade connectors (6.3 mm | 1/4 in.) and R1 for speed/battery protection.

Diagram illustrating the wiring for a non-PC option with a display connected to +, LIN, and C. Also shows LED connected to + and LIN via a series resistor.

Diagram illustrating the wiring for a PC option with Secop Gateway connected to UBAT, LIN, and C, and a NTC resistor.

Operational Errors (TOOL4COOL® or LED flashes)

Communication error: Master controller communication stopped.
Thermostat failure: NTC thermistor short-circuit or no connection.
Thermal cut-out of electronic unit: PCB or machine compartment temperature exceeds limits.
Minimum motor speed error: System too heavily loaded, motor cannot maintain min. speed.
Motor start error: Rotor blocked or high differential pressure.
Fan over-current cut-out: Fan overloading the electronic unit.
Battery protection cut-out: Voltage outside cut-out setting.

Product Bulletin: Brazing on BD Nano Discharge Connector

Secop BDN45F/-A, BDN50K/-A, MB3CKV, and BDN-EV compressors use a special discharge connector element for optimized energy consumption.

This element is made of plastic and is sensitive to high heat exposure.

Brazing Instructions:

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 (see figure 3) and/or a damp cloth. A protective plate can also protect the element from direct flame heat.
Do not braze longer than 10 seconds and wait for 5 minutes for the next soldering attempt.

Figure 1 shows the BDN45F discharge connector.

Figure 2 shows the discharge connector element.

Figure 3 shows a fork burner.

Further information: Product Bulletin – Brazing Technique for Compressor Connectors (DES.N.600.A1.02)

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