Danfoss Electronics 101N1000 Installation Guide

August 2011 - DEHC.EI.100.X1.02 / 520N0864 1/2

Instructions

Electronic Unit for BD1.4F Compressor,

101N1000, 12V DC

Fig. 1

Flexible control settings

TOOL

COOL

4

ENGLISH

The electronic unit is a single voltage device.
This means that the unit can only be used with
12V DC power supply systems. Maximum volta­ge is 17V DC, max. ambient temperature is 55°C.
The electronic unit has a built-in thermal protec­tion which is actuated and stops the compressor
operation if the electronic unit temperature beco­mes too high (100°C/212°F on the PCB). It can
be connected to a PC through the Secop One
Wire/LIN Gateway communication interface on
the terminal Com and – (Fig. 6). Communication
gateway modules incl. communication cables
can be ordered at Secop. The PC interface al­lows you to create different settings and reads
out several measurements by using the software
tool TOOL4COOL® supplied by Secop.

Installation (Fig. 3)

Mount the electronic unit directly on the com­pressor plug and fi x it with screws.

Power supply (Fig. 1)

The electronic unit must always be connected
directly to the battery poles. 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 during installation, a fuse must be mounted
in the + cable as close to the battery as possib­le. It is recommended to use 12A fuses for 12V
circuits.
When a main switch is connected it must be con­nected on the terminals DI and +. When there is
no main switch DI must be short circuit with +.
The wire dimensions in Fig. 4 must be observed.
Avoid extra junctions in the power supply system
to prevent voltage drop from affecting the battery
protection setting.

Battery protection (Fig. 2)

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 the power supply sys­tems are shown in Fig. 2a. Other settings are set
through the communication interface (Fig. 2b).
When using a mechanical thermostat battery cut
in and cut out values can be set via a resistor on
the terminals S1 and C.
Thermostat (Fig. 1)
The thermostat is connected between the termi­nals C and S1. Either a NTC (electrical thermos­tat) or a mechanical thermostat can be connec­ted.
When using the NTC function it is necessary to
mount another NTC in series with a 4,7kΩ resistor
on the terminals C and S2. This NTC sensor will
then obtain the ambient temperature and switch
off the compressor in case of ambient higher
then 55°C. Three different thermostat modes
can be chosen in the software - Auto (both NTC
and mechanical), NTC or Mechanical. Standard
setting is Auto. When Auto is set and a mechani­cal thermostat is used it is necessary to mount a
316Ω resistor on the terminals C and S2.
In case of using a NTC the set point in the range
between -40º C and 40º C is set with the software
and the temperature can also be seen by using
the interface. When using the Auto setting in the
software this not possible to obtain NTC failures,
so it is recommended to set the thermostat mode
to NTC when using a NTC.

Speed selection (Fig. 1)

The compressor will run with a fi xed speed of
3,000 rpm when the thermostat is switched on. A
start delay in the range from 2-240 sec. (factory
setting 4 sec.) after thermostat cut-in can also be
chosen.
By default the compressor will start with a speed
of 2,500 rpm for the fi rst 30 sec.

Fan (Fig. 1)

A fan can be connected between the terminals
F+ and F–. Connect the plus to F+ and the minus
to F–. Since the output voltage between the ter­minals + and F is always regulated to 12V, a 12V
fan must be used. The fan output can supply a
continuous current of 0.65Aavg. A higher current
draw is allowed for 2 seconds during start.
The

factory setting is no fans. If fans are used
without adapting the software settings, the fans
will run but no error signal will be sent in case of
fan failure.
It is also possible to set a start delay on the fans
in the range from 0-240 sec. Factory settings for
the fan is 0 sec. Fan speed is fi xed

Error handling (Fig. 5)

If the electronic unit records an operational error,
the error can be read out in the software.

MMI (Fig. 1)

It is possible to connect 2 switches and 2 LED’s
to the controller. With each switch a set point
for the thermostat can be selected or deselected
and the LEDs show the chosen set point.
Default setting for the set points is +6° C fridge
set point and -6° C freezer set point. Other
set point values can be established via TOOL­4COOL®. The switches are connected to the ter­minals SW1 and C. The switch for choosing the
fridge set point shall be mounted in series with a
1500Ω resistor.
The switch for choosing the freezer set point
shall be mounted in series with a 330Ω resistor.
The LED for indicating the fridge set point shall
be mounted on the terminals D1 and C in series
with 750Ω resistors.
The LED for indicating the freezer set point shall
be mounted on the terminals D2 and C in series
with 750Ω resistors.
The intensity of the LED’s can be controlled via a
pwm 100kHz – 10kHz to the terminal DIM.

Resistors

Marking Value [Ω] Function

R1 see page 2 battery protection
R2 750 resistor LED 1
R3 750 resistor LED 2
R4 1500 coding resistor S1
R5 330 coding resistor S2

Connectors (Tyco Electronics)

Code no Male Female Crimp

Power 178305-5 178289-5 1-175218-20
MMI 1376136-1 1-1318119-3 1-318108-1

2/2 Designed and manufactured by Secop for DANFOSS - DEHC.EI.100.X1.02 / 520N0864 August 2011

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 subsequential changes being necessary in specifi cations already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Instructions

Electronic Unit for BD1.4F Compressor,

101N1000, 12V DC

Standard battery protection settings

12V cut-out [V] 12V cut-in [V]

8.5 9.0

Optional battery protections settings (calculated)

Resistor (R1) 12V cut-out 12V cut-in 12V max.

[kΩ] [V] [V] Voltage [V]

0 9.60 10.90 17.0

0.17 9.73 11.03 17.0

0.34 9.86 11.16 17.0

0.54 10.00 11.30 17.0

0.75 10.12 11.42 17.0

0.97 10.25 11.55 17.0

1.23 10.38 11.68 17.0

1.50 10.52 11.82 17.0

1.81 10.65 11.95 17.0

2.15 10.78 12.08 17.0

2.53 10.91 12.21 17.0

2.96 11.04 12.34 17.0

3.44 11.17 12.47 17.0

3.99 11.30 12.60 17.0

Operational errors

Error
code

Error type

Can be read out in the software TOOL4COOL®

7

Communication failure

6

Thermostat failure

(If the NTC thermistor is short-circuit or has no
connection, the electronic unit will enter manual
mode).

5

Thermal cut-out of electronic unit

(If the refrigeration system has been too hea vi ly
loaded, or if the ambient tem pe ra ture 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 at
approximately 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 cut-out

(The fan loads the electronic unit with more than

0.65A

peak

).

1

Battery protection cut-out

(The voltage is outside the cut-out setting).

Wire Dimensions DC

Size

Max. length*

12V operation

Cross AWG

section

[mm2] [Gauge] [m] [ft.]

2.5 12 2.5 8
4 12 4 13
6 10 6 20

10 8 10 33

*Length between battery an electronic unit

Fig. 3

Fig. 4

Fig. 2a

Fig. 5

Fig. 2b

Fig. 6

Flexible control settings

TOOL

COOL

4