Nidec Embraco CF01F - Page 38

4.3.3. Drop-in connection and electrical schematic
The thermostat is connected to the Inverter through the CN209 connection (or CN211 in
case of faston terminal), using a communication cable (Figure 27).
CAUTION
● Drop-in communication has functional isolation only.
● When opened, the thermostat impedance must be higher than 380 kΩ.
Otherwise, the compressor can continuously run without ever turning off.
● When operating with under voltages (160V or lower for 220-240V Inverters)
the communication may be lost and the compressor will not works until the
input voltage increases again.
● If the application requires working with lower input voltages, please get in
contact with your Nidec GA Application Engineer.
Figure 27 – Drop-in control connection
38