Configuration Mode (ConF)
a a a a a
+/- 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 ass igned to the “+ s peed” com mand increases the s peed, the input ass igned to the “- speed”
com mand decreases the speed.
•
Use of double action keys:
Only one logic input ass igned to “+ s peed” is required.
+/- s peed with double-press buttons:
Des cription: 1 button pres sed twice (2 s teps ) for each direction of rotation. A contact clos es each tim e the
button is pres s ed.
Re leas ed (- s peed) 1s t press (speed m aintained)
2nd press (faster)
Forw ard button
–
a
a and b
Re ve rse button
–
c
c and d
Exam ple of wiring:
LI1: Forward
LIx: Reverse
LIy: + s peed
Motor frequency
LSP
0
LSP
Forw ard
2
nd
press
1
nd
press
0
Reverse
2
nd
press
1
nd
press
0
Do not use this +/-s peed type with 3-wire control.
Whichever type of operation is selected, the m ax. speed is s et by
[High speed]
(HSP) (s ee page 87).
Note:
If the reference is s witched via
[Ref. 2 switching]
(rFC)
(s ee page 155) from any one reference channel to
another reference channel with "+/- speed", the value of reference
[Outpu
t fre
qu
e
n
cy ]
(
rFr
) (after ramp)
m ay be copied at the sam e tim e in accordance with the
[Copy channel 1 --> 2]
(COP) param eter (s ee page
156).
If the reference is s witched via
[Ref. 2 switching]
(rFC)
(s ee page 155) from one reference channel to any
other reference channel with "+/- speed", the value of reference
[Output frequency]
(
rF
r
) (after ramp) is
copied at the s am e tim e.
This helps to prevent the s peed being incorrectly reset to zero when s witching takes place.
Parameters described in this page can be accessed by:
DRI- > CONF > FULL > FUN- > UPD-
terminals
LI1 LIx LIy +24
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