Mitsubishi FR - S500 instruction manual Stall prevention function and current limit function

2.3.12 Stall prevention function and current limit function

You can make settings to disable stall prevention caused by overcurrent and to disable the fast-response current limit (which limits the current to prevent the inverter from resulting in an overcurrent trip if an excessive current occurs due to sudden load variation or ON-OFF, etc. in the output side of the running inverter).

•Stall prevention

If the current exceeds the limit value, the output frequency of the inverter is automatically varied to reduce the current.

•Fast-response Current limit

If the current exceeds the limit value, the output of the inverter is shut off to prevent an overcurrent.

Parameter	Name	Factory	Setting	Remarks
		Setting	Range
21	Stall prevention	0	0 to 31,	Setting is enabled when
	function selection		100	Pr. 30 = "1".

		Stall					Stall
		Prevention		OL Signal			Prevention		OL Signal
		Operation					Operation
	Fast-			Output		Fast-			Output
		Selection					Selection
	Response	:		:		Response	:		:
Pr. 21	Current	Activated		Operation	Pr. 21	Current	Activated		Operation
	Limit	: Not		continued		Limit	: Not		continued
Set-	:	activated		:	Set-	:	activated		:
ting					ting
	Activated	celerationAc Constant speed	celerationDe	Operation		Activated	celerationAc Constant speed	Deceleration	Operation
	: Not			not		: Not			not
	activated			continued		activated			continued
				(*)					(*)
0					16
1					17
2					18
3					19
4					20
5					21
6					22
7					23
8					24
9					25
10					26
11					27
12					28
13					29
14					30
15					31
					100 Regenerative Driving
					68