WEG SSW-06.0205 User Manual page 113

CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Parameter
P604 (1)
Voltage Unbalance
between Phases
(1)
P605
Voltage Unbalance
Between Phases
Time
(1)
P610
Immediate
Undercurrent
P611 (1)
Immediate
Undercurrent Time
P612 (1)
Immediate
Overcurrent
(1)
P613
Immediate
Overcurrent
Time
114
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Range
[Factory Setting]
Unit Description / Notes
 Time of Voltage Unbalance between phases is set as a percentage of
0 to 30
[ 15 ] the motor rated current (P400).
 P604 sets the maximum voltage difference between the three line
1%Un of the Motor
phases at which the motor can operate without problems, during the
0 to 99 time set at P605. If these values are exceeded, the Soft-Starter is
[ 1 ] switched Off and the Voltage Unbalance error is displayed.
 These settings also activate the phase fault protection during the
1s
starting process and during the operation at full voltage.
 The Undercurrent and the overcurrent are set as percentage of the
0 to 99
[ 20 ]
motor rated current (P401).
1%In of the motor  P610 sets the minimum current level at which the motor can operate
without problems. This protection function acts when the motor current
1 to 99
drops below the value and during a time equal or longer than those
[ 0=Inactive ]
set at P611. If these values are exceeded, the Soft-Starter is switched
1s
Off and the Undercurrent Error is displayed. This function is generally
used in applications with hydraulic pump which can not be operated
without a load.
0 to 99  P612 sets the maximum overcurrent levels that the motor or Soft-
[ 20 ]
Starter allows during the time set at P613, after which the Soft-Starter
1%In of the motor
is switched Off and the Overcurrent Error is displayed.
1 to 99
[ 0=Inactive ]
1s
I(A)
P612
P610
I(A)
P612
P610
NOTE!
This function is active always when motor is running.
NOTE!
These Functions are only active after the motor start and after full
voltage operation has been reached.
Actuation Region
Start
0
Enable
Fault Action
Nominal
Under Current
t
P611
Figure 6.24 - Actuation Levels for Overcurrent and Undercurrent
Nominal
Disable
I(A)
Over Current
Nominal
t(s) t
P613
t(s)
Fault Action
t(s)