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Program features 139
SPFC powering routine
The diagram below illustrates the SPFC powering routine.
1. At start, relay RO 1 is closed and motor 1 is connected to the drive output.
2. The drive waits for the time specified by parameter
to
ensure that the contactor (RO 1) has stabilized and then starts modulating from
zero speed. Motor 1 is the speed regulated motor.
3. When the drive output frequency
f
out
rises over the start frequency (
), the start delay for the auxiliary motor (
) is set.
4. When delay
has elapsed, the drive coasts to stop and relay RO 1 is opened
(motor 1 is disconnected from the drive output).
to ensure that the contactor (RO 1)
has stabilized.
RO 2 is closed and motor 2 is connected to the drive output as
the new speed regulated motor.
to ensure that the contactor (RO 2)
has stabilized.
8. After delay
, the drive starts modulating from zero speed regulating the
speed of motor 2. RO 1 is closed and motor 1 is connected directly on-line as an
auxiliary motor.
8115 AUX MOT START D
8122
PFA START DELAY
RO 1 / Motor 1
RO 2 / Motor 2
f
out
Start
Motor 1 is speed reg. motor
Motor 2 is speed reg. motor
Motor 1 is aux. motor
1
2
3 4
6
5 7
8
t
8109 START
FREQ 1
8122 PFA START DELAY
8122 PFA START DELAY
Содержание ACS320 series
Страница 1: ...ABB drives User s manual ACS320 drives 0 5 to 30 hp ...
Страница 4: ......
Страница 18: ...18 Safety ...
Страница 28: ...28 Operation principle and hardware description ...
Страница 56: ...56 Electrical installation ...
Страница 142: ...142 Program features Connection diagram example ACS320 xx xxxx x ...
Страница 282: ...282 Actual signals and parameters ...
Страница 358: ...358 Fieldbus control ...
Страница 376: ...376 Fault tracing ...
Страница 382: ...382 Maintenance and hardware diagnostics ...
Страница 407: ...Dimension drawings 407 Frame size R2 NEMA 1 Frame size R2 IP20 NEMA 1 3AUA0000051097 A ...
Страница 409: ...Dimension drawings 409 Frame size R3 NEMA 1 Frame size R3 IP20 NEMA 1 3AUA0000051118 A ...
Страница 411: ...Dimension drawings 411 Frame size R4 NEMA 1 Frame size R4 IP20 NEMA 1 3AUA0000051133 A ...
Страница 412: ...412 Dimension drawings ...
Страница 413: ...Index Numerics A B C D E F G H I K L M N O P R S T ...
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