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100

101

Parameter listing and descriptions 301

ACH550-01 User's Manual

8109 START FREQ 1 0.0…500 Hz

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 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 Hz

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.

Code Description Range

P 8115

(P 8109)+1

P 8112

f (Hz)

MAX

MIN

P 8109

1 2 ... 300 301 302 303 304 305 306 307 308 309 310 ... 473 474

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ABB RCNA-01 Manual de usuario Pagina 305

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