Mitsumi electronic FR-F520-0.75K, 55K instruction manual Description of main circuit terminals

		INSTALLATION AND WIRING
(1) Description of main circuit terminals
Symbol	Terminal Name	Description
R, S, T	AC power input	Connect to the commercial power supply. Keep these terminals unconnected when
〈 L1, L2, L3〉		using the high power factor converter (FR-HC).
U, V, W	Inverter output	Connect a three-phase squirrel-cage motor.
		Connected to the AC power supply terminals R and S 〈 L1 and L2〉 . To retain the alarm
R1, S1	Power supply for control	display and alarm output or when using the high power factor converter (FR-HC),
〈 L11, L21〉	circuit	remove the jumpers from terminals R-R1 and S-S1 〈 L1-L11and L2-L21〉and apply
		external power to these terminals.
P, N	Brake unit connection	Connect the optional FR-BU brake unit, power regeneration converter (FR-RC) or high
〈 +, -〉		power factor converter (FR-HC).
P, P1	Power factor improving	Disconnect the jumper from terminals P-P1 〈+ -P1〉and connect the optional power
〈 +, P1〉	DC reactor connection	factor improving reactor (FR-BEL).
PR, PX	Please do not alter or adjust terminals PR and PX of the connecting jumper.
	Ground	For grounding the inverter chassis. Must be earthed.

Note: 〈 〉 Terminal names in parentheses are those of the EC version.

(2) Description of control circuit terminals

Type		Symbol	Terminal Name	Description
				Turn on the STF signal to start forward rotation and turn it off to	When the STF
		STF	Forward rotation start	stop. Acts as a programmed operation start signal in the	and STR signals
				programmed operation mode. (Turn on to start and turn off to	are turned on
				stop.)	simultaneously,
				Turn on the STR signal to start reverse rotation and turn it off to	the stop	2
		STR	Reverse rotation start		command is
				stop.
					given.
		STOP	Start self-holding	Turn on the STOP signal to select the self-holding of the start signal.
			selection
		RH, RM, RL	Multi-speed selection	Use the RH, RM and RL signals as appropriate to select multiple
				speeds.
				Turn on the JOG signal to select jog operation (factory setting).	Input terminal
	input	JOG	JOG mode selection	Jog operation can be performed with the start signal (STF or	function selection
				STR).	(Pr. 180 to
signals	Contact			Turn on the RT signal to select the second acceleration/	Pr. 186) change
				RT signal.	terminal
			Second acceleration/	deceleration time. When the second functions such as "second
		RT	deceleration time	torque boost" and "second V/F (base frequency)" functions have	functions.
			selection	been set, these functions can also be selected by turning on the
Input
				Turn on the MRS signal (20ms or longer) to stop the inverter output.
		MRS	Output stop	Used to shut off the inverter output to bring the motor to a stop by the magnetic
				brake.
		RES	Reset	Used to reset the protective circuit activated. Turn on the RES signal for more than
				0.1 second, then turn it off.
		AU	Current input	Only when the AU signal is turned on, the inverter can be	Input terminal
			selection	operated with the 4-20mADC frequency setting signal.	function selection
			Automatic restart after	With the CS signal on, restart can be made automatically when	(Pr. 180 to
		CS		the power is restored after an instantaneous power failure. Note	Pr. 186) change
			instantaneous power	that this operation requires restart parameters to be set. When	terminal
			failure selection
				the inverter is shipped from the factory, it is set to disallow restart.	functions.
	SD		Contact input	Common to the contact input terminals and terminal FM. Common output terminal for
			common (sink)	24VDC 0.1A power (PC terminal).
			24VDC power and	When transistor output (open collector output), such as a programmable controller, is
			external transistor	connected, connect the external power supply common for transistor output to this
	PC		common	terminal to prevent a fault caused by undesirable current. This terminal can be used
			Contact input	as a 24VDC, 0.1A power output. When source logic has been selected, this terminal
			common (source)	serves as a contact input common.

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