2
5.1.1 The Controller is connected to the battery d irectly, wrong connect the poles doesn t destroy
the compressor and controller, but the compressor d o not work;
5.1.2 The fuse must be connected in the + cable to protect controller, which close to the power
supply, 15A fuse for 12VDC and 7.5A fuse for the 24 VDC are recommended;
5.1.3 If a main switch is used, it should be rated to current of min. 20A;
5.1.4 To prevent voltage dropping, please avoid ex tra junction in the power supply system.
5.1.5 A Light Emitting Diode(LED) for compressor o peration monitoring can be connected
between the ter and D .
Operational errors will cause the LED to flash a nu mber of times. The number of flashes
depends on what kind of operational error was recor ded. Each flash will last 1/4 second and
each error will repeat every 4 seconds. Operational errors show by Table 5, please see it in
page 6.
5.1.6 If a cooling fan is used. It must be connect ed
to electronic unit ter and F, only use
12VDC fan , no matter what power supply you are usi ng;
5.1.7 A Thermostat is connected between the termin al C and T of the electronic unit. It will start
or stop the running of compressor automatically;
5.1.8 A Resistor can be connected between terminal C and T, it allows you to adjust the speed of
the compressor, the relationship between the resist or and the compressor speed shown by
Table 3; please see it in page 3.
5.1.9 To ensure sufficient battery power for co mpr essor and avoid permanent damage to the
battery because heavy discharge. A battery protecti on resistor is connected between
terminal C and P, the different resistor will get t he different voltage protection, the details is
showed by Diagram 4;
PROCOLD S.r.l. - ITALY- 13043 CIGLIANO (VC)
C/so Umberto,58 - Tel (+39) 0161 42 44 52 Fax (+39) 0161 4 2 40 92
www.procold.it info@proco ld.it
5 Controller
5.1
Wiring
The Compressors are equipped
with a brushless direct current
motor which is controlled by an Attached Controller, the wiring is shown as following drawing:
TD35 VS
and
TD50 VS
1 Battery
2 Fuse
3 Main Switch (optional)
4 LED (optional)
5 12V DC Cooling Fan (optional)
6 Thermostat
7 Resistor for presetting speed (optional) C-T
8 Resistor for presetting battery protection
voltage (optional) C-P
Rev. 2.0 27/02/2019