E6581339⑥
12
3.4 External thermal trip input (TH1+, TH1-)
By connecting the thermistor to TH1+ and TH1- terminal, when the thermistor value is
unusual, the inverter can be trip.
The resistor value
between TH1+ and TH1-
Detect condition
Movement
about under 70 ohm
Thermistor short broken detection
oh2
trip
about 70 - about 2.5k ohm
Normal value
―――
about 1.6k ohm
Thermistor fault reset
―――
about 3k ohm
Thermistor fault detection
oh2
trip
Parameter
Title
Function
Adjustment range
Default setting
f637
PTC thermal selection
0: Deselect
1: Select
0
TH1+
TH1-
PTC
thermistor
Expansion IO card option
P15
4.2k
Voltage
detection
circuit