WEG CFW-10 EASYDRIVE User Manual page 64

CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
[Factory Setting]
Parameter
P156 0.3xPI
Motor Overload
Current
P169 0.0xPI
Maximum Output
Current
64
Range
to 1.3xPI
nom nom
[ 1,2xP295 ]
0.1A
Parameter P156 must be set from 10% to 20% higher
than the rated motor current.
Prevents motor stalling during an overload. If motor load
to 2.0xPI
nom nom
increases its current will increase too. If the motor current
[ 1.5xP295 ]
attempts to exceed the value set at P169, the motor speed
0.1% (<100%);
will be decreased by following the deceleration ramp until
1% (>99.9%)
the current becomes lower than P169. As soon as the
overload condition disappears, the motor speed is
resumed.
Acceleration
Description / Notes
The motor will not stop if the line is permanently with
overvoltage (U >P151). In this case, reduce the line
d
voltage, or increase the value of P151.
If even with these settings the motor does not decelerate
within the required time, you will have the alternative to
increase P136;
This function is used to protect the motor against overload
(Ixt function - E05).
The motor overload current is the current level above which
the inverter will consider the motor operating under
overload. The higher the difference between the motor
current and the overload current, the sooner the Ixt function
- E05 - will act.
Motor Current (P003)
Overload Current
3,0
2,0
1,5
1,0
15 30
Figure 6.13 - Ixt function – Overload detection
Motor Current
P169
Speed
ramp
Deceleration ramp (P101/P103)
(P100/
during
P102)
acceleration
Figure 6.14 – Curves showing the operation of the current limitation
Time (s)
60 90
during
during
continuous
deceleration
duty
Time
Time