270
Parameter listing and descriptions
ACH550-01 User's Manual
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
Range
3701
USER LOAD C MODE
0…3
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
272
.
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
1=FAULT, 2=ALARM
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
10…400 s
Defines the time limit for generating a fault.
• Half of this time is used as the limit for generating an alarm.
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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