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Parameters 319
SPFC
SPFC enabled. See section
on page.
3
Total number of motors used in the application, including the
motor connected directly to the drive.
1
1…4
Number of motors.
1 = 1
Minimum number of motors running simultaneously.
1
0…4
Minimum number of motors.
1 = 1
Maximum number of motors running simultaneously.
1
1…4
Maximum number of motors.
1 = 1
Defines the start speed (Hz/rpm) for the first auxiliary motor.
As the motor speed or frequency exceeds the limit defined by
this parameter, a new auxiliary motor is started.
To avoid nuisance starts of the second auxiliary motor, the
speed of the variable speed motor should be higher than the
start speed for the duration defined by parameter
. If the speed decreases below the start speed, the
auxiliary motor is not started.
To maintain the process conditions during the start of the
second auxiliary motor, a speed hold on time can be defined
with parameter
. Certain pump types do
not produce significant flow with low frequencies. The speed
hold on time can be used to compensate the time needed to
accelerate the second auxiliary motor to a speed where it
produces flow. The start of the second auxiliary motor is not
aborted if the speed of the first auxiliary motor decreases
Vector:
1300 rpm;
Scalar 48 Hz;
58 Hz
(
b0)
0…32767 rpm/Hz
Speed/frequency.
1 = 1 unit
No.
Name/Value
Description
Def/FbEq16
Increasing
flow
Speed
Time
Stop
Start
Decreasing
flow
A
ux
. pump
1
S
top/
S
tar
t
ON
ON
OFF
OFF
Min. speed
Max. speed
ACS580 FW.book Page 319 Wednesday, September 21, 2016 9:48 PM
Содержание ACS580 Series
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Страница 146: ...142 Program features ACS580 FW book Page 142 Wednesday September 21 2016 9 48 PM ...
Страница 444: ...440 Fieldbus control through a fieldbus adapter ACS580 FW book Page 440 Wednesday September 21 2016 9 48 PM ...
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