Nidec SECOP 101N0212 Instructions

Fig. 1
Optional battery protection settings
(9) kΩ 12V cut-out [V] 12V cut-in [V] 12V max. [V] 24V cut-out [V] 24V cut-in [V] 24V max. [V]
Resistor
0 9.6
1.6 9.7
2.4 9.9
3.6 10.0
4.7 10.1
6.2 10.2
11 10.5
14 10.6
18 10.8
24 10.9
33 11.0
47 11.1
82 11.3
220 9.6
ENGLISH
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 volt-
age is 17V for a 12V system and 31.5V for a 24V
power supply system. Max. ambient temperature
is 43°C. The electronic unit has a built-in thermal
protection which is actuated and stops compres-
sor 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
The electronic unit must always be con nec ted
directly to the battery poles (2). The electronic unit
is pro tec ted against reverse battery connection.
A fuse (3) must be mounted in the + cable as close
to the battery as possible. 15A fuse for 12V and
7.5A fuse for 24V circuits is mandatory.
If a main switch (4) is used, the main switch should
be rated to a 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 bat-
teryprotection setting.
Battery protection
The compressor stops and restarts according to
the voltage measured on the + and - terminals
of the electronic unit. The standard settings ap-
pear from Fig. 3.
Other settings (Fig. 4) are optional if a R2 resis-
tor (9) is connected between terminals C and P.
In solar applications without a battery a 220 kΩ
resistor is recommended.
February 2017
Instructions
Electronic Unit for BD35F/50F/35K Compressors,
101N0212, 101N0340 and 101N0650, 12/24V DC
Fig. 4
10.9 17.0
11.0 17.0
11.1 17.0
11.3 17.0
11.4 17.0
11.5 17.0
11.8 17.0
11.9 17.0
12.0 17.0
12.2 17.0
12.3 17.0
12.4 17.0
12.5 17.0
10.9
Thermostat and speed selection
Either an NTC (electrical thermostat, 11) or a
mechanical thermostat (10) can be connected
between the terminals C and T.
If an NTC is used, the set point and speed can
be set via a communication interface between
terminals C and D/I.
If a mechanical thermostat is used without any
R1 resistor (8), the compressor will run with a
fixed speed of 2,000 rpm. With unit 101N0340
the compressor will run with variable speed, ad-
justing itself to the actual cooling demand (AEO).
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 cur-
rent (mA) of the control circuit. Resistor values
for various motor speeds appear from Fig. 5.
Fan (optional)
A fan (5) can be connected between the terminals
+ and F. A 12V fan must be used for both 12V
and 24V power supply systems.
The fan output can supply a continous current
of 0.5A . A higher current draw is allowed for 2
avg
seconds during start.
Protection against too many start attempts
The electronic is protected against too many
start attempts. If more then ten starts occur in an
unusual short time, the unit will blink with error
code 2 and prevent further starts for 60s. After
60s normal operation will be resumed.
Communication interface (option a)
A PC can be connected through the Secop
One Wire/LIN Gateway (7) to the communica-
tion interface between terminal D/I and C. The
software TOOL4COOL® allows you to create
different settings and reads out several meas-
urements. Settings can be copied from one unit
to another in mass production.
DES.I.101.E4.02 / 520N1222
21.3 22.7 31.5
21.5 22.9 31.5
21.8 23.2 31.5
22.0 23.4 31.5
22.3 23.7 31.5
22.5 23.9 31.5
23.0 24.5 31.5
23.3 24.7 31.5
23.6 25.0 31.5
23.8 25.2 31.5
24.1 25.5 31.5
24.3 25.7 31.5
24.6 26.0 31.5
31.5
Wire Dimensions DC
Size Max. length* Max. length*
Cross AWG 12V
section operation
[mm ] [Gauge] [m] [ft.]
2
2.5 13 2.5 8
4 12 4 13
6 10 6 20
10 8 10 33
*Length between battery and electronic unit
Fig. 2
Standard battery protection settings
12V cut-out 12V cut-in 24V cut-out
[V] [V] [V]
10.4 11.7 22.8
Fig. 3
Compressor speed
Electronit unit Resistor (R1)
[Ω]
Code number
calculated
values
0
101N0212 277
101N0650 692
1523
0
173
101N0340
450
with AEO
865
1696
Fig. 5
Alternatively a customer specific controller (e.g.
display) can be connected to adjust the settings
like set point and speed during operation.
LED (option b)
A 10mA light emitting diode (LED) (6) can be con-
nected between the terminals + and D/I.
In case the electronic unit records an operational
error, the diode will flash a number of times. The
number of flashes depends on what kind of op-
erational error was recorded. Each flash 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.
Operational errors
Error
Error type
code
or LED Can be read out in the software
flashes TOOL4COOL®
6
Thermostat failure
(If the NTC thermistor is short-circuit or has no
connection).
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 Too many start attempts or fan over current
(Too many compressor or fan starts in short time
or fan current higher than 0.5A
1
Battery protection cut-out
(The voltage is outside the cut-out setting).
24V
operation
[m] [ft.]
5 16
8 26
12 39
20 66
24V cut-in
[V]
24.2
Motor speed
[rpm]
2,000
2,500
3,000
3,500
AEO
2,000
2,500
3,000
3,500
).
avg
1/2