Force Terminal Mode - Hitachi SJ2002 Series Instruction Manual

4–34
Using Intelligent Input Terminals

Force Terminal Mode

The purpose of this intelligent input is to allow a device to force the inverter to allow
control of the following two parameters via the control terminals:
• A001 - Frequency source setting (01 = control terminals [FW] and [RV])
• A002 - Run command source setting (01 = control terminals [O] or [OI])
Some applications will require one or both settings above to use a source other than the
terminals. You may prefer to normally use the inverter's keypad and potentiometer, or to
use the ModBus network for control, for example. However, an external device can turn
ON the [F-TM] input to force the inverter to (temporarily) allow control (frequency
source and Run command) via control terminals. When the [F-TM] input is OFF, then
the inverter uses the regular sources specified by A001 and A002 again.
Option Terminal
Code Symbol
51 F-TM
Valid for inputs:
Required settings:
Notes:
•
When changing the [F-TM] state during Run Mode
(inverter is driving the motor), the inverter will stop
the motor before the new [F-TM] state takes effect.
Input
Function Name
State
Force Terminal ON
Mode
OFF
C001, C002, C003, C004,
C005, C006
A001, A002
Description
Forces A001=01 (frequency source setting =
control terminal), and
A002=01(Run command source setting = control
terminal)
Inverter applies the user setting for A001 and
A002 normally
Example (requires input configuration—see
page 3–45):
F-TM
L 6 5 4
See I/O specs on page 4–6.
3 2 1 PCS