94
ENGLISH
Configurable I/O Application Functions
+ / - 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 :
Wiring example :
LI1 : forward
LIx : reverse
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.
Description : 1 button pressed twice for each direction of rotation.
Each action closes a volt-free contact.
Release (- speed) Press 1 (speed
maintained)
Press 2 (+ speed)
forward button – a a and b
reversebutton – c c and d
LI1
ac
bd
LIx LIy
ATV58 control terminals
+ 24
GP_ATV58_EN.fm Page 94 Mardi, 2. avril 2002 9:15 21