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ACH550-UH User’s Manual
Parameters
8104
REFERENCE STEP 2
0.0…100.0%
0.1%
0.0%
Sets a percentage value that is added to the process reference.
• Applies only when at least two auxiliary (constant speed) motors are running.
• See parameter 8103
REFERENCE
STEP
1.
8105
REFERENCE STEP 3
0.0…100.0%
0.1%
0.0%
Sets a percentage value that is added to the process reference.
• Applies only when at least three auxiliary (constant speed) motors are running.
• See parameter 8103
REFERENCE
STEP
1.
8109
START FREQ 1
0.0…500.0 Hz
0.1 Hz
60.0 Hz (US)
Sets the frequency limit used to start the first auxiliary motor. The first auxiliary motor starts if:
• No auxiliary motors are running.
• ACH550 output frequency exceeds the limit:
8109 + 1 Hz.
• Output frequency stays above a relaxed limit
(8109 - 1 Hz) for at least the time: 8115
AUX
MOT
START
D
.
After the first auxiliary motor starts:
• Output frequency decreases by the value =
(8109
START
FREQ
1) - (8112
LOW
FREQ
1).
• In effect, the output of the speed regulated motor drops to
compensate for the input from the auxiliary motor.
See the figure, where:
• A = (8109
START
FREQ
1) - (8112
LOW
FREQ
1)
• B = Output frequency increase during the start delay.
• C = Diagram showing auxiliary motor’s run status as
frequency increases (1 = On).
Note:
8109
START
FREQ
1 value must be between:
• 8112
LOW
FREQ
1
• (2008
MAXIMUM
FREQ
) -1.
8110
START FREQ 2
0.0…500.0 Hz
0.1 Hz
60.0 Hz (US)
Sets the frequency limit used to start the second auxiliary motor.
• See 8109
START
FREQ
1 for a complete description of the operation.
The second auxiliary motor starts if:
• One auxiliary motor is running.
• ACH550 output frequency exceeds the limit: 8110 + 1.
• Output frequency stays above the relaxed limit (8110 - 1 Hz) for at least the time: 8115
AUX
MOT
START
D
.
8111
START FREQ 3
0.0…500.0 Hz
0.1 Hz
60.0 Hz (US)
Sets the frequency limit used to start the third auxiliary motor.
• See 8109
START
FREQ
1 for a complete description of the operation.
The third auxiliary motor starts if:
• Two auxiliary motors are running.
• ACH550 output frequency exceeds the limit: 8111 + 1 Hz.
• Output frequency stays above the relaxed limit (8111 - 1 Hz) for at least the time: 8115
AUX
MOT
START
D
.
Group 81: PFA Control
Code Description Range
Resolution
Default
S
P 8115
(P 8109)+1
P 8112
A
B
1
0
C
P 8109
A
t
t
f
(Hz)
f
MIN
f
MAX
Summary of Contents for ACH550-BCR
Page 4: ...iv Manual contents ...
Page 6: ......
Page 12: ...1 8 ACH550 UH User s Manual Table of contents ...
Page 36: ...1 32 ACH550 UH User s Manual Installation ...
Page 70: ...1 66 ACH550 UH User s Manual Application macros ...
Page 335: ...ACH550 UH User s Manual 1 331 Technical data ...
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Page 382: ...2 36 ACH550 E Clipse Bypass User s Manual Start up ...
Page 398: ...2 52 ACH550 E Clipse Bypass User s Manual Bypass functions overview ...
Page 406: ...2 60 ACH550 E Clipse Bypass User s Manual Application macros ...
Page 544: ...2 198 ACH550 E Clipse Bypass User s Manual Embedded fieldbus ...
Page 584: ...2 238 ACH550 E Clipse Bypass User s Manual Diagnostics ...
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Page 612: ...3 6 ACH550 UH User s Manual Table of contents ...
Page 622: ...3 16 ACH550 PCR PDR User s Manual Installation ...
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