Thermistor Trip Function - Omron 3G3JX User Manual

4-2 Function Mode
•You can also reset an Inverter trip by pressing the STOP/RESET key on the Digital Operator.
•In reset selection C102, you can select alarm reset timing and either enable/disable in normal
operation.
•For the RS terminal, only NO contact is available.
Parameter No.
C102
4
(Example 1)
Alarm

Thermistor Trip Function

This function protects the motor by tripping with the built-in thermistor detecting a temperature rise.
Data
19
Related functions
•Allocate 19 (PTC) to multi-function input 5 (C005). This cannot be used with other multi-function
terminals. (Use a thermistor with the PTC characteristics.)
•Trip level is fixed at 3 kΩ ±10% max. For how to connect the thermistor, refer to "Functions and
Connections of the Control Circuit Terminals" (page 2-23).
4-57
Function name
00: Trip reset at power-on (example 1)
01: Trip reset at power-off (example 2)
Reset selection
02: Trip reset at power-on (example 1)
ON
RS
OFF
ON
OFF
Symbol Function name
PTC Thermistor input
Data
Enabled during normal operation (shuts
off output)
Enabled during normal operation (shuts
off output)
Disabled during normal operation (trip
reset only)
(Example 2)
ON
RS
OFF
ON
Alarm
OFF
Status
When the thermistor is connected between terminals
S5 and SC, the Inverter can detect motor temperature
Connected
and, if the temperature exceeds the specified level,
trips to shut off the output (E35). The level is fixed.
If the thermistor is not connected, the Inverter trips
Open (E35) to shut off the output even with this function
selected.
C005 only
Default setting Unit
⎯
00
Description