Omron RX Series User Manual page 438

7 Detailed Functions
Precautions for Correct Use Precautions for Correct Use
It is not possible to distinguish among the 1st/2nd/3rd control functions on the Digital Operator
display. Check the ON/OFF status of each terminal to determine which control function is
enabled.
When the terminals SET and SET3 are both ON, SET is given priority, which means that the 2nd
control function is enabled.
During operation, you cannot switch among the 1st, 2nd, and 3rd control functions. Switching is
possible only during stop.
External Trip (EXT)
Use this parameter to have the inverter trip via an error (trip) signal generated by a peripheral system.
To do so, set the Multi-function Input S1 to S8 Selection (C001 to C008) to 12 (EXT).
Data Symbol
12 EXT
Note Do not turn ON the terminal EXT after turning off the power supply. Otherwise, the inverter may not store the
error status correctly.
• When the EXT terminal turns ON, the inverter trips with the alarm code E12 displayed and stops
output.
• Once the inverter trips with the alarm code E12 displayed, the trip status will not be reset even if the
error signal is reset from external equipment (the terminal EXT is turned OFF).
• In this case, perform the reset operation or turn off and then the power supply again to reset the trip.
RUN commands
FW, RV
EXT terminal
Motor rpm
RS terminal
Alarm output
terminal
Power Recovery Restart Prevention Function (USP)
Use this function to cause the inverter to trip with the alarm code E13 displayed, if the power supply is
turned on with the RUN command input in the inverter.
Set the Multi-function Input S1 to S8 Selection (C001 to C008) to 13 (USP).
Data Symbol
13 USP
7 - 112
Function name Status
ON
External trip
OFF
Function name Status
ON
Power recovery restart
prevention function
OFF
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Description
Shuts off output to set motor in a free-run state.
Motor is in normal operation.
Free running
Description
Disables restart of Inverter with RUN command
input at power-on.
Enables restart of Inverter with RUN command
input at power-on.