External Trip(Ext : External Trip) - Hyundai n 700 Instruction Manual

N700 Operating Instructions and Parts Manual
Note) Start at 0Hz regardless of the motor speed.
On 0Hz start, the retry wait time is disregarded.
When 0Hz start is used and the motor speed iIs still high there is the possibility of over-current trips.
Note) After FRS terminal is switched OFF, the Inverter reads the frequency of the motor and when it
reaches the value of the motor and when it reaches the value in b007 the inverter will begin to RUN
again.
On frequency matching start if an over-current trip occurs, try extending the retry time.
9.2.9

External trip(EXT : External Trip)

(1) This function can be used to force the Inverter into a trip situation which is switched by an
external input, i.e. PLC or relay contact.
(2) When the EXT terminal is switched ON, the inverter trips E12(EXTERNAL) and the outputs
switched OFF.
(3) Assign 12(EXT) to an intelligent input terminal.
(4) The trip will not be canceled when the terminal is turned OFF.
(5) To cancel the trip, the reset signal must be applied or the Inverter switched OFF and ON
again at the supply.
9.2.10 Unattended Start Prevention Function(USP : Unattended Start Prevention)
(1) The USP function is designed as a fail safe to prevent accidental starting of the Inverter if the
RUN signal is ON when the power is restored to the Inverter. When this function worked
E13(USP) is displayed. Either resetting the Inverter or turning the RUN signal OFF can clear
the trip.
(2) This function is able to disarm when the operation command is turned off. (Example 1)
(3) If the trip is cancelled while the RUN signal is still ON, the inverter will restart automatically.
(Example 2)
Operation command
FW, REV
EXT terminal
Number of Motor
revolution time
RS terminal
Alarm output terminal
Fig. 9- 17 In case of setting EXT to an input terminal 1(I001=12).
9. Explanation of I-Group Function
Free-run
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