ABB ACQ580 Firmware Manual page 263

No. Name/Value
76.30 Start point 1
Speed
76.30
76.41
Min. speed
ON
OFF
ON
OFF
0.00...32767.00
[rpm/Hz] [m]
76.31 Start point 2
76.32 Start point 3
Description
Defines the start point 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
delay. 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 76.57 PFC speed hold
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
Stop
Speed/frequency.
Defines the start point for the second auxiliary motor. See
parameter 76.31 Start point
Defines the start point for the third auxiliary motor. See
parameter 76.31 Start point
on. Certain pump
76.55
76.57
76.56
76.58
Start
1.
1.
Parameters 259
Def/FbEq16
Vector:
1300 rpm;
Scalar 48 Hz;
58 Hz
(95.20 b0);
20.00; 30.00
76.55 Start
Max. speed
Time
Increasing
flow
Decreasing
flow
1 = 1 unit
Vector:
1300 rpm;
Scalar 48 Hz;
58 Hz
(95.20 b0);
25.00
Vector:
1300 rpm;
Scalar 48 Hz;
58 Hz
(95.20 b0);
30.00; 20.00