Schneider Electric vw3-a58101, altivar 58 telemecanique Wiring example, LIx reverse LIy + speed

GP_ATV58_EN.fm Page 94 Mardi, 2. avril 2002 9:15 21

Configurable I/O Application Functions

ENGLISH

+/ - speed : 2 types of operation are available

1Use of single action buttons : two logic inputs are required in addition to the operating direction(s). The input assigned to the “+ speed” command increases the speed, the input assigned to the “- speed” command decreases the speed.

This function accesses the Str save reference parameter in the Control menu.

2Use of double action buttons : only one logic input assigned to + speed is required. + / - speed with double action buttons :

Description : 1 button pressed twice for each direction of rotation.

Each action closes a volt-free contact.

	Release (- speed)		Press 1 (speed	Press 2 (+ speed)
			maintained)
forward button		–	a	a and b
reversebutton		–	c	c and d
Wiring example :	ATV58 control terminals
	LI1 LIx	LIy + 24

LI1 : forward						a	c
￿￿￿￿￿￿￿￿￿
LIx : reverse							b		d
LIy : + speed
￿￿￿￿￿￿￿￿￿￿￿	￿	￿	￿	￿	￿			￿			￿
￿￿￿￿￿￿￿￿￿￿									￿	￿

This type of +/- speed is incompatible with 3-wire control. In this case, the - speed function is automatically assigned to the logic input with the highest index (for example : LI3 (+ speed), LI4 (- speed)).

In both cases of operation, the maximum speed is given by the references applied to the analog inputs. For example, connect AI1 to +10V.

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