Toshiba VF-A7 instruction manual Torque limit, Setting, Power running /regenerative torque limit

voltage signals

current signals

6.22 Torque limit

			, 
RR-CC ―― 0～10V		(0～250%)	
RX-CC ―― 0～±10V		(-250～250%)	
VI-CC	―― 0～10V	(0～250%)	
II-CC	―― 4(0)～20mA	(0～250%)	

 ：Selection of power running torque limit #1

 ：Power running torque limit #1

 ：Selection of regenerative torque limit #1

 ：Regenerative torque limit #1

 ：Power running torque limit #2

 ：Regenerative torque limit #2

 ：Power running torque limit #3

 ：Regenerative torque limit #3

 ：Power running torque limit #4

 ：Regenerative torque limit #4

 ：Torque limit mode (polarity)

・Function

The function is to decrease or increase the output frequency according to the load ing condition when the motor torque reaches the limit level.

Setting a torque limit parameter at 250.0 means "Invalid".

Note) Decreases of the output frequency are not limited by (Lower limit frequency), and

decrease up to (Stop frequency)+0.1Hz.

■Setting

(1) Power running /regenerative torque limit

First, you need to set the polarity of each torque limit. Set  at .

Title	Function	Adjustment range	Setting value
	Torque limit	: Power running/regenerative torque limit	
	mode (polarity)	: Positive/negative torque limit

a）limiting the torque with internal parameters (or on communication mode)

			＋250% torque
		
	
		Power running
	Regenerative
Reverse		Regenerative		Forward
	Power running
		
	
			－250% torque

Torque limits can be set with the parameters  and .
[Setting of power running torque]
(Selection of power running torque limit #1) :Set		at ( )
(Power running torque limit #1)	:Set	a desirable	torque	limit	level.
[Setting of regenerative torque]
(Selection of regenerative torque limit #1)	:Set	at ( )
(Regenerative torque limit #1)	:Set	a desirable	torque	limit	level.

F-45