Motor Temperature Detection (Ptc); Over Temperature Detection Of The Frequency Inverter - Hitachi L100 SERIES Service Manual

5-3. Motor Temperature Detection (PTC)

Frequency inverter has a motor temperature sensor input (PTC input : PTC resistor).
When the resistance value is more than 3k ohm +-10%, the frequency inverter trips with "E35".

5-4. Over Temperature Detection of the Frequency Inverter

Frequency inverter has a temperature detection against power devices of the main circuit. Frequency
inverter shuts down the output when temperature around IGBT comes up to 120
L100 inverter
U
V
W
L 5(PTC)
Except Japanese version
Motor
PTC thermistor
5-4/E
.