Hitachi L2002 manual 131

				L2002 Inverter	3–51
		Input Function Summary Table
Option	Terminal	Function Name		Description
Code	Symbol
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
13	USP	Unattended Start	ON	On powerup, the inverter will not resume a Run
		Protection		command (mostly used in the US)
			OFF	On powerup, the inverter will resume a Run
				command that was active before power loss
15	SFT	Software Lock	ON	The keypad and remote programming devices
				are prevented from changing parameters
			OFF	The parameters may be edited and stored
16	AT	Analog Input	ON	Terminal [OI] is enabled for current input (uses
		Voltage/current		terminal [L] for power supply return)
		Select
			OFF	Terminal [O] is enabled for voltage input (uses
				terminal [L] for power supply return)
						ParametersDrive
18	RS	Reset Inverter	ON	The trip condition is reset, the motor output is
				turned OFF, and powerup reset is asserted			Configuring
			OFF	Normal power-ON operation
19	PTC	PTC Thermistor	ANLG	When a thermistor is connected to terminals [5]
		Thermal Protection		and [L], the inverter checks for over-
				temperature and will cause trip event and turn
				OFF output to motor
			OPEN	A disconnect of the thermistor causes a trip
				event, and the inverter turns OFF the motor
20	STA	Start	ON	Starts the motor rotation
		(3-wire interface)
			OFF	No change to present motor status
21	STP	Stop	ON	Stops the motor rotation
		(3-wire interface)
			OFF	No change to present motor status
22	F/R	FWD, REV	ON	Selects the direction of motor rotation: ON =
		(3-wire interface)		FWD. While the motor is rotating, a change of
				F/R will start a deceleration, followed by a
				change in direction.
			OFF	Selects the direction of motor rotation: OFF =
				REV. While the motor is rotating, a change of F/
				R will start a deceleration, followed by a change
				in direction.