ACS550-02/U2 User’s Manual 187
Parameters
Group 37: USER LOAD CURVE
This group defines supervision of user adjustable load curves (motor torque as a
function of frequency). The curve is defined by five points.
Code Description
3701 USER LOAD C MODE
Supervision mode for the user adjustable load
curves.
This functionality replaces the former underload
supervision in Group 30: FAULT FUNCTIONS. To
emulate it, see section Correspondence with the
obsolete underload supervision on page 188.
0 = NOT SEL – Supervision is not active.
1 =
UNDERLOAD – Supervision for the torque
dropping below the underload curve.
2 =
OVERLOAD – Supervision for the torque
exceeding the overload curve.
3 =
BOTH – Supervision for the torque dropping
below the underload curve or exceeding the
overload curve.
3702 USER LOAD C FUNC
Action wanted during load supervision.
1 =
FAULT – A fault is generated when the condition defined by 3701 USER LOAD C MODE has been valid longer than
the time set by 3703
USER LOAD C TIME.
2 =
ALARM – An alarm is generated when the condition defined by 3701 USER LOAD C MODE has been valid longer than
half of the time defined by 3703 USER LOAD C TIME.
3703 USER LOAD C TIME
Defines the time limit for generating a fault.
• Half of this time is used as the limit for generating an alarm.
3704 LOAD FREQ 1
Defines the frequency value of the first load curve definition point.
• Must be smaller than 3707 LOAD FREQ 2.
3705 LOAD TORQ LOW 1
Defines the torque value of the first underload curve definition point.
• Must be smaller than 3706 LOAD TORQ HIGH 1.
3706 LOAD TORQ HIGH 1
Defines the torque value of the first overload curve definition point.
3707 LOAD FREQ 2
Defines the frequency value of the second load curve definition point.
• Must be smaller than 3710 LOAD FREQ 3.
3708 LOAD TORQ LOW 2
Defines the torque value of the second underload curve definition point.
• Must be smaller than 3709 LOAD TORQ HIGH 2.
3709 LOAD TORQ HIGH 2
Defines the torque value of the second overload curve definition point.
3710 LOAD FREQ 3
Defines the frequency value of the third load curve definition point.
• Must be smaller than 3713
LOAD FREQ 4.
3711 LOAD TORQ LOW 3
Defines the torque value of the third underload curve definition point.
• Must be smaller than 3712 LOAD TORQ HIGH 3.
3712 LOAD TORQ HIGH 3
Defines the torque value of the third overload curve definition point.
Overload area
Underload area
Allowed operating area
P3706
P3705
P3704
P3709
P3708
P3707
P3712
P3711
P3710
P3715
P3714
P3713
P3718
P3717
P3716
Motor torque (%)
Output frequency (Hz)
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