Hitachi SJ700-2 instruction manual External trip EXT function

Related code

C001 to C008: Terminal [1] to [8] functions

Related code

C001 to C008: Terminal [1] to [8] functions

Chapter 4 Explanation of Functions

4.2.52 External trip (EXT) function

The external trip function allows you to make the inverter trip according to the error (trip) signal generated by an external system.

To use this function, assign function "12" (EXT) to one of the terminal [1] to [8] functions (C001 to C008). When the EXT terminal is turned on, the inverter trips with error code "E12" displayed and stops the output.

After the inverter trips with error code "E12" displayed, it will not be recovered from tripping, even when the error signal from the external system is reset (i.e., the EXT terminal is turned off).

To recover the inverter from tripping, reset the inverter or turn the inverter power off and on.

Item	Function code	Data	Description
Terminal [1] to [8] functions	C001 to C008	12	EXT: External trip

Note: Do not turn on the EXT terminal after the inverter power is shut off. Otherwise, the error history may not be stored correctly.

Operation commands

FW and RV

EXT terminal

Motor speed Free running

RS terminal

Alarm output terminal

4.2.53 3-wire interface operation function (STA, STP, and F/R)

The 3-wire interface operation function allows you to use automatic- reset contacts (e.g., pushbutton switches) to start and stop the inverter.

Specify "01" (control circuit terminal block) for the run command source setting (A002).

Assign function "20" (STA), "21" (STP), and "22" (F/R) to three of the terminal [1] to [8] functions (C001 to C008) to enable the control operations described below. Assigning the STP function to an intelligent input terminal disables the functions of the FW and RV terminals.

The figure below shows the inverter outputs according to terminal operations.

Item	Function code			Data			Description
				20		STA: Starting the motor
Terminal [1] to [8] functions	C001 to C008			21		STP: Stopping the motor
				22		F/R: Switching the motor operation
						direction
STA		ON		OFF
STP			ON		OFF

F/R

Output frequency

Forward rotation

Reverse rotation

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