Altivar 31 - Square D

Altivar ® 31 Adjustable Speed AC Drives
Functions
563717
563718
38
Adjusting the preset speeds in PowerSuite software
Adjusting the +/- Speed function in PowerSuite software
Example of wiring:
LI1: forward
LIx: reverse
LIy: +speed (USP)
LIz: -speed (DSP)
ATV31 Control Terminals
LI1 LIx LIy LIz +24
a c b d
© 2004–2005 Schneider Electric All Rights Reserved
8800CT0401_Single Action Button
Preset speeds
This function permits the switching of preset speed references. Choose
between two, four, eight, or sixteen preset speeds, enabled via one, two,
three, or four logic inputs respectively. Preset speeds are adjustable in
increments of 0.1 Hz, from 0 Hz to 500 Hz.
Preset speeds are suited to material handling and to machines with several
operating speeds.
563539
Forward
or
Reverse
LSP
20
15
10
1
LI2 0
1
LI3 0
1
LI4 0
f (Hz)
Example of operation with four preset speeds and two logic inputs
+/- Speed
This function increases or decreases a speed reference using single action
buttons or double action buttons (such as on a pendant station).
Single action buttons
Single action buttons require two logic inputs and two directions of rotation.
The input assigned to the +speed command increases the speed; the input
assigned to the -speed command decreases the speed. The maximum
speed is set by HSP.
Direction -Speed Speed maintained +Speed
Forward a and d a a and b
Reverse c and d c c and b
Motor frequency
LSP
0
LSP
Forward
0
Reverse
0
b b
d
a a a a a a a a
t
t
t
t
b
c c
The speed obtained with
inputs LI3 and LI4 at state 0 is
LSP or the speed reference,
depending on the level of
analog inputs AI1, AI2, and
AI3.
Factory settings:
1st speed: LSP (low speed or
speed reference)
2nd speed: 10 Hz
3rd speed: 15 Hz
4th speed: 20 Hz (high speed)
8800CT0401_Plus Speed_Minus Speed_2.eps
4/2005