Serial Control Mode; Serial Specifications And Internal Circuit - Embraco Fullmotion CF10C Product Manual

CHAPTER 4. OPERATION
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Figure 4.3: Energized Contact Drop-In connection
WARNING
WARNING
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CAUTION
CAUTION
NOTICE
NOTICE

4.3 Serial control mode

This option is used when an electronic thermostat controls the CF10C Inverter uses
a serial communication protocol. Based on Embraco protocol it is possible to define
the compressor speed and check other parameters.

4.3.1 Serial specifications and Internal Circuit

The Serial Control mode has an isolated input stage provided by the usage of op-
tocouplers. The circuit on Figure 4.4 shows the electrical connections to perform
serial communication between an electronic thermostat and Fullmotion CF10C In-
verter serial connector (CN204).
The input resistance for serial communication, shown in Figure 4.4, is 1.2 k .
CF10C INVERTER CF10C INVERTER
3
4
• When opened, the thermostat impedance
must be higher than 380 k . Otherwise
the compressor can run continuously, with-
out ever turning off.
• All main parameters, such as minimum
and maximum speed are described at
compressor datasheet.
Drop-In
–
On/Off
Thermostat
Neutral
N
Phase
L
33