Hitachi X200 Series instruction manual Force Terminal Mode, Inverter Ready

F-TM

4−31

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	Function Name	State	Description
Code	Symbol
51	F-TM	Force Terminal	ON	Forces A001=01 (frequency source setting =
		Mode		control terminal), and A002=01(Run command
				source setting = control terminal)
			OFF	Inverter applies the user setting for A001 and
				A002 normally

Valid for inputs:	C001~C005
Required settings	A001, A002

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.

Example (default input configuration shown—see page 3–49):

5 4 3 2 1 L PCS P24

See I/O specs on page 4–6.

Operations and Monitoring

Inverter Ready

The purpose of this intelligent input is to make inverter ready to start the motor immediately when the RUN command is given. When the RDY input is active, motor output terminal is active even if there is no RUN command.

Option	Terminal	Function Name	State		Description
Code	Symbol
52	RDY	Inverter Ready	ON	Inverter is ready to act immediately when the
				RUN command is given.
			OFF	Inverter performs normal start when the RUN
				command is given.
Valid for inputs:		C001~C005		Example (default input configuration shown—see
Required settings		A001, A002		page 3–49):	RDY

Notes: 5 4 3 2 1 L PCS P24

See I/O specs on page 4–6.

HIGH VOLTAGE: When set RDY function ON, there will be a voltage appear at motor output terminals U, V and W even if the motor is in stop mode. So never touch the inverter power terminal even the motor is not running.