Installation manual

Configuration Mode (ConF)
S1A28692 03/2010 169
+/- SPEED
Two types of operations are available:
• Use of single action keys: 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.
• Use of double action keys: Only one logic input assigned to “+ speed” is required.
+/- speed with double-press buttons:
Description: 1 button pressed twice (2 steps) for each direction of rotation. A contact closes each time the
button is pressed.
Example of wiring:
LI1: Forward
LIx: Reverse
LIy: + speed
Do not use this +/-speed type with 3-wire control.
Whichever type of operation is selected, the max. speed is set by [High speed] (HSP) (see page 75
).
Note:
If the reference is switched via [Ref. 2 switching] (rFC) (see page 140
) from any one reference channel to
another reference channel with "+/- speed", the value of reference [Output frequency] (rFr) (after ramp)
may be copied at the same time in accordance with the [Copy channel 1 --> 2] (COP) parameter (see page
141
).
If the reference is switched via [Ref. 2 switching] (rFC) (see page 140
) from one reference channel to any
other reference channel with "+/- speed", the value of reference [Output frequency] (rFr) (after ramp) is
copied at the same time.
This helps to prevent the speed being incorrectly reset to zero when switching takes place.
Released (- speed) 1st press (speed maintained) 2nd press (faster)
Forward button – a a and b
Reverse button – c c and d
ATVppp control
terminals
LI1 LIx LIy +24
a
b
c
d
aaaa a a a
bb
cc
d
c
Motor frequency
LSP
Forward
0
2
nd
press
1
nd
press
Reverse
0
2
nd
press
1
nd
press
0
LSP
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com