Vacon 20 CP/X, Applications Manual

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Parameter description vacon • 64
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4
P9.5 M
OTOR STALL DELAY
This time can be set between 0.0 and 300.0 s.
This is the maximum time allowed for all stage. the stall time is counted by an internal up/down
counter. If the stall time counter value goes above this limit the protection will cause a trip.
Figure 14. Stall time count.
P9.6 M
OTOR STALL MIN FREQ
Stall is recognized when the current limiter has reduced the output frequency below P9.6, for
the time in P9.5.
P9.7 U
NDERLOAD PROTECTION
0: No action
1: Warning
2: Fault
Underload (Dry run) is recognized when torque is above the minimum curve defined by P9.8
and P9.9, for the programmed time P9.10.
The Underload mode is selected with P9.23. When P9.23 = 0, Underload is determined by pa-
rameters P9.8 - P9.10. When P9.23 =1, the fault is related to P9.24.
P9.8
UNDERLOAD LOAD CURVE AT NOMINAL FREQ
The torque limit can be set between 10.0-150.0% x T
nMotor
.
This parameter gives the value for the minimum torque allowed when the output frequency is
above the field weakening point.
Par. P9.5
Trip area
Time
Stall time counter
Stall•
No stall
Trip/warning
par. P9.4