WEG SSW-06.0205 User Manual page 116

[Factory Setting]
Parameter
(1)
P640
Motor Protection
Thermal Class
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Range
Unit Description / Notes
NOTE!
The start command will be executed only after the time interval
programmed at P630 has elapsed.
NOTES!
1) The time interval starts to be counted at the moment when the
2) This function is only active when the time interval, which has
3) If the control board supply is removed, or if the microcontroller
0 to 9
[ 6=30 ]
1
 Soft-Starter SSW-06 has a rigid thermal protection that is efficient
and totally programmable for the protection of your motor. All Soft-
Starter SSW-06 models are fitted with this protection device. When
activated, error E05 (overload) will be displayed and the motor will be
switched off.
 This thermal protection has curves that simulate the motor heating
and cooling. The calculation is executed by a complex Software, that
estimates the motor temperature through True RMS current supplied
to the motor.
 The actuation curves of the Thermal Protection are based on
IEC 60947-4-2 standard.
 The heating and cooling curves are based on WEG's extensive
experience with motor development. These curves adopt WEG three-
phase IP55 standard motors. They also consider if the motor is cooled
or not when driven.
 The cooling time of the thermal image depends on the motor power,
which means that each power will have different cooling time. When
reduction of this cooling time is required, you can use P641.
 The estimated motor temperature is saved in non-volatile memory
every time the power supply of the control board is switched off. Thus,
when the control board is switched on again, the last value saved will
return.
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
motor switch Off command is given, indifferently if a deceleration
ramp has been programmed or no.
been set at P630, is longer than the time set at P104 for the
deceleration process, if programmed.
is reset, no time counting occurs.
P640
0
1
2
3
4
5
6
7
8
9
Table 6.36 - Thermal Classes
Action
Inactive
Class 5
Class 10
Class 15
Class 20
Class 25
Class 30
Class 35
Class 40
Class 45
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