Mitsubishi FR - S500 instruction manual Three-wire type connection STF, STR, Stop

Stop

3-wire type connection example

(2) Three-wire type connection (STF, STR, STOP)

A three-wire type connection is shown	Power		NFB
on the right. Assign the start self-holding						R<L1>,S<N>,T
	supply
signal (STOP) to any of the input				Forward
						Inverter
terminals. To make a reverse rotation		Stop		rotation start
start, set Pr. 63 to "- - -" (factory setting).						STF
1) Short the signal STOP-SD to enable						STR (Pr.63= "- - -" )
the start self-holding function. In this				Reverse
case, the forward/reverse rotation				rotation start		STOP
signal functions only as a start signal.
(Note) Assign the stop signal to any of						SD
		frequency
Pr. 60 to Pr. 62 (input terminal
function selection).
2) If the start signal terminal STF (STR)-
SD are shorted once, then opened, the
start signal is kept on and starts the								Time
inverter. To change the rotation		Output			ON
direction, short the start signal STR
(STF)-SD once, then open it.	Start
							ON
(Note) Assign the stop signal to any of

Pr. 60 to Pr. 62 (input terminal function selection).

3) The inverter is decelerated to a stop by opening the signal STOP-SD once. For the frequency setting signal and the operation of DC dynamic brake at a stop time, refer to paragraphs 2) to 4) in

(1)Two-wire type connection. The right diagram shows 3-wire type connection.

4)When the signal JOG-SD is shorted, the STOP signal is invalid and the JOG signal has precedence.

5)If the output stop signal MRS-SD is shorted, the self-holding function is not deactivated.

DC Injection Brake and Coasting to Stop functionality

Operation	External Operation or Combined		PU Operation or Combined		1
Mode	Operation		Operation
	Pr. 79 = "0", "2", "3"		Pr. 79 = "0", "1", "4"
	Terminals STF	Set frequency		Set frequency
	(STR)-SD		Stop key
DC Injection	disconnected	changed to 0Hz		changed to 0Hz
Brake	(*1)
	DC injection		DC injection
	brake operated at	DC injection	brake operated at	DC injection
DC injection	not more than		not more than
	"DC injection	brake operated at	"DC injection	brake operated at
brake enabled
	brake operation	0.5Hz or less.	brake operation	0.5Hz or less.
	frequency" set in		frequency" set in
	Pr. 10		Pr. 10
	Coasted to a stop		Coasted to a stop
DC injection	at not more than		at not more than	Coasted to a stop
	"DC injection	Coasted to a stop	"DC injection
brake disabled	brake operation	at 0.5Hz or less.	brake operation	at 0.5Hz or less.
	frequency" set in		frequency" set in
	Pr. 10		Pr. 10
*1: Also stopped by the RESETSTOP		key. Refer to page 94.
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