Danfoss BD35F Electronic Unit Compressors
Instructions
Electronic Unit (Automotive Applications) for BD35F Compressors, 101N0600, 12- 24V DC
The electronic unit is a dual voltage device. This means that the same unit can be used in both 12V and 24V power supply systems. Maximum voltage is 17V for a 12V system and 31.5V for a 24V power supply system. Max. The ambient temperature is 55°C. The electronic unit has a builtin thermal protection that is actuated and stops compressor operation if the electronic unit temperature gets too high.
Installation (Fig. 1)
Connect the terminal plug from the electronic unit to the compressor terminal. Mount the elec tro nic unit on the compressor by snapping the cover over the screw head (1).
Power supply (Fig. 1)
The electronic unit must always be connected directly to the battery poles (2). Connect the plus to + and the minus to -, otherwise, the electronic unit will not work. The electronic unit is protected against reverse battery connection.
For protection of the installation, a fuse (3) must be mounted on the + cable as close to the battery as possible. 15A fuse for 12V and 7.5A fuse for 24V circuits are recommended.
If a main switch (4) is used, it should be rated to a minimum current of min. 20A.
The wire dimensions in Fig. 2 must be observed. Avoid extra junctions in the power supply system to prevent voltage drop from affecting the battery protection setting.
Battery protection
(Fig. 1)
The compressor stops and restarts again according to the designated voltage limits measured on the + and – terminals of the electronic unit.
The standard settings for 12V and 24V power supply systems appear from Fig. 3.
Other settings (Fig. 4) are optional if a connection which includes a resistor (9) is established between terminals C and P.
Thermostat (Fig. 1)
The thermostat (7) is connected between the terminals C and T. Without any resistor in the control circuit, the compressor will run with a fi xed speed of 2,000 rpm when the thermostat is switched on.
Other fixed compressor speeds in the range between 2,000 and 3,500 rpm can be obtained when a resistor (8) is installed to adjust the current (mA) of the control circuit. Resistor values for various motor speeds appear from Fig. 5
Fan, optional (Fig. 1)
A fan (5) can be connected between the terminals C and F. Since the output voltage between the terminals C and F is always regulated to 12V, a 12V fan must be used for both 12V and 24V power supply systems.
The fan output can supply a continous current of 0.5Aavg. A higher current draw is allowed for 2 seconds during start.
Lamp, optional (Fig.1)
The 10W power should be split on fan and lamp (10) output (5W each) or 10W only on fan or lamp output.
| Fan | Lamp |
| 5 watt | 5 watt |
| 10 watt | 0 watt |
| 0 watt | 10 watt |
| both outputs: 12V DC, 0-5W | |
LED (optional, Fig. 1)
A 10mA light emitting diode (LED) (6) can be connected between the terminals + and D.
In case the electronic unit records an operational error, the diode will fl ash a number of times. The number of flashes depends on what kind of operational error was recorded. Each fl ash will last ¼ second. After the actual number of flashes there will be a delay with no flashes, so that the sequence for each error recording is repeated every 4 seconds.
| Number of lashes | Error type |
| 5 | Thermal cutout of electronic unit
(If the refrigeration system has been too heavily loaded, or if the ambient temperature is high, the electronic unit will run too hot). |
| 4 | Minimum motor speed error
(If the refrigeration system is too heavily loaded, the motor cannot maintain minimum speed 1,850 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 cutout
(The fan loads the electronic unit with more than 1Apeak). |
| 1 | Battery protection cutout
(The voltage is outside the cutout setting). |
| Constant LED
light |
Safe mode
(The unit is out of specification, but will still be running as long as possible). |
VDE/UL Approvals for BD Compressors
Approved Compressor – Electronic Unit Combinations
| Compressors | Electronic Units | ||||||
| Standard | EM/ | High start | High speed | AEO | AEO EM/ | ||
| 101N0210 | 101N0220 | 101N0230 | 101N0290 | 101N0300 | 101N0320 | ||
| BD35F mm | 101Z0200 | UL | UL | UL | |||
| BD35F inch | 101Z0204 | UL | UL | UL | |||
| BD35K (R600a) | 101Z0211 | ||||||
| BD50F mm | 101Z1220 | UL | UL | UL | UL | ||
| BD50F inch | 101Z0203 | UL | UL | UL | UL | ||
| BD80F mm | 101Z0280 | ||||||
| BD250GH | 101Z0400 | ||||||
| BD250GH Twin | 101Z0500 | ||||||
| BD100CN (R290) | 101Z0401 | ||||||
| Compressors | Electronic Units | ||||||
| Solar | AC/DC converter | Automotive | Automotive | Telecommunication | Extended EM/ | ||
| 101N0400 | 101N0500 | 101N0600 | 101N0630 | 101N0730 | 101N0900 | ||
| BD35F mm | 101Z0200 | UL | VDE/UL | ||||
| BD35F inch | 101Z0204 | UL | VDE/UL | ||||
| BD35K (R600a) | 101Z0211 | ||||||
| BD50F mm | 101Z1220 | VDE/UL | |||||
| BD50F inch | 101Z0203 | VDE/UL | |||||
| BD250GH (48V) | 101Z0402 | UL | |||||
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.
All trademarks in this material are the property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
Designed and manufactured by Secop for DANFOSS – DEHC.EI.100.M6.02 / 520N0312
Documents / Resources
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Danfoss BD35F Electronic Unit Compressors [pdf] Instructions 101N0600, BD35F Electronic Unit Compressors, BD35F, Electronic Unit Compressors, Unit Compressors, Compressors |
