Hitachi WJ200-001L, Инструкция по эксплуатации, Страница: 231 / 680

4

24
External Trip
When the terminal [EXT] is turned ON, the inverter enters the trip state, indicates
error code
 
, 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 the [EXT] input 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.
Option
Code
Terminal
Symbol
Function Name State Description

EXT External Trip ON When assigned input transitions OFF to ON,
inverter latches trip event and displays

OFF No trip event for ON to OFF, any recorded trip
events remain in history until Reset.
Valid for inputs:

~

Example (requires input configuration
—
see page 3-85 ):
See I/O specs on
page 4
–6.
Required settings
(none)
Notes:

If the USP (Unattended Start Protection) feature
is in use, the inverter will not automatically
restart after canceling the EXT trip event. In that
case, it must receive either another Run
command (OFF-to- ON transition), a keypad
Reset command, or an [RS] intelligent terminal
input signal.
[EXT] terminal
t
1
0
Motor revolution speed
[RS] terminal
1
0
Alarm output terminal
1
0
Run command [FW,RV]
1
0
Free run
ON
ON
ON ON
ON
EXT
7 6 5 4 3 2 1 L P24
PLC