ABB ACH550-UH-011A-6 User Manual page 312

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ACH550-01 User's Manual
Code Description
8109 START FREQ 1
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
• In effect, the output of the speed regulated motor drops to
compensate for the input from the auxiliary motor.
See figure, where:
• A = (8109
START FREQ
• 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
• 8112
LOW FREQ
• (2008
MAXIMUM FREQ
8110 START FREQ 2
Sets the frequency limit used to start the second auxiliary motor.
• See 8109
START FREQ
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
Parameter listing and descriptions
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f (Hz)
f
MAX
(P 8109)+1
P 8109
A
P 8112
f
MIN
C
1
0
1) - (8112
LOW FREQ
1) - (8112
LOW FREQ
1 value must be between:
1
) -1.
1 for a complete description of the operation.
AUX MOT START D
Range
0.0...500 Hz
P 8115
B
1).
1)
0.0...500 Hz
.
A
t
t
307

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