Schneider Electric vw3-a58101 Encoder input application functions, Preset setpoints, Reference

GP_ATV58_EN.fm Page 98 Mardi, 2. avril 2002 6:09 18

Configurable I/O Application Functions

ENGLISH

Analog input application functions

Preset setpoints:

2 or 4 preset setpoints require the use of 1 or 2 logic inputs respectively:

	2 preset setpoints				4 preset setpoints
	Assign: LIx to Pr2			Assign: LIx to Pr2 then, LIy to Pr4
LIx	Reference	LIy	LIx		Reference
0	Analog reference	0	0		Analog reference
1	Process max (= 10 V)	0	1		PI2 (adjustable)
		1	0		PI3 (adjustable)
		1	1		Process max (= 10 V)

Torque limit : (Only with an I/O extension card with analog input AI3)

The signal applied at AI3 operates in a linear fashion on the internal torque limit (parameter TLI in the "drive menu") :

-If AI3 = 0V : limit = TLI x 0 = 0

-If AI3 = 10 V : limit = TLI.

Applications : Torque or traction correction, etc.

Encoder input application functions :

(Only with an I/O extension card with encoder input)

Speed regulation : Is used for speed correction using an incremental encoder or sensor. (See documentation supplied with the card).

Summing speed reference : The setpoint from the encoder input is summed with AI1. (See documentation supplied with the card)

Applications :

-Synchronization of the speed of a number of speed controllers. Parameter PLS in the "drive" menu is used to adjust the speed ratio of one motor in relation to that of another.

-Setpoint via encoder.

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