Hitachi SJ300 Series Opt, Code, Input, Symbol, Description, External Trip, Function Name

			SJ300 Inverter	4–21
External Trip	When the terminal [EXT] is turned ON, the inverter enters the trip state, indicates error code
	E12, and stops the output. This is a general purpose interrupt type feature, and the meaning of
	the error depends on what you connect to the [EXT] terminal. Even if [EXT] is turned OFF, the
	inverter remains in the trip state. You must reset the inverter or cycle power to clear the error,
	returning the inverter to the Stop Mode.
	In the graph below, the [EXT] input turns ON during normal Run Mode operation. The inverter
	lets the motor free-run to a stop, and the alarm output turns ON immediately. When the
	operator initiates a Reset command, the alarm and error are cleared. When the Reset is turned
	OFF, the motor begins rotation since the Run command is already active.
	[EXT]
	Motor revolution speed	free run
	[RS]
	Alarm output terminal
	[FW, RV]
				t

Opt.

Symbol

Function Name

Input

Description

Code

State

12

EXT

External Trip

ON

When assigned input transitions OFF to

ON, inverter latches trip event and

displays E12

OFF

No trip event for ON to OFF, any recorded

trip events remain in history until Reset

Valid for

C001, C002, C003, C004,

Example: (Requires input configuration—

inputs:

C005, C006, C007, C008

see page 3–47. Jumper position shown is

for –xFU/-xFR models; for –xFE models,

Required

(none)

see page 4–12.)

settings:

EXT

Notes:

TH

FW

8

CM1

5

3

1

• If the USP (Unattended Start Protection)

P24

PLC

CM1

7

6

4

2

feature is in use, the inverter will not automat-

ically restart after cancelling the EXT trip

event. In that case, it must receive either

another Run command (OFF-to-ON transi-

tion), a keypad Reset command, or an [RS]

intelligent terminal input signal.

See I/O specs on page 4–9.

Operations Monitoring and