WEG SSW-03 Plus Series User Manual

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DETAILED PARAMETER DESCRIPTION
6.5.2 - P25 - Thermal
Class of the
Motor
Protection
The Soft-Starter SSW-03 Plus is fitted with a Thermal
Protection. This protection is very efficient for the motor
protection. All Soft-Starter SSW-03 Plus models are fitted
with this protection and always it is activated, error E04
is displayed and the motor is switched off.
This thermal protection has curves that simulate the mo-
tor heating and cooling. The calculation is performed
through a sophisticated software that estimates the mo-
tor temperature by means of the current that is supplied
to the motor.
The actuation curves of the motor Thermal Protection
are according to IEC 60947-4-2 standard.
The motor heating and cooling curves are based on long
experience of the company with its motors. These curves
adopt a standard three-phase motor with IP55 degree of
protection. These curves also consider if the motor is
cooled during operation or not.
NOTE!
The error E04, motor overload, remains in the memory, even
if the CPU is reset, and when the CPU is switched Off, the last
value is stored. The value is only decremented with the switch
On and the motor Off.
Factory
Standard
OFF
P21 - Adjust of the motor current
min. Range max.
shortest step
OFF, 30.0%IN 1% 200.0%IN
P25
Action
5 Class 5
10 Class 10
15 Class 15
20 Class 20
25 Class 25
30 Class 30
Table 6.3 - Thermal Classes

WEG SSW-03 Plus Series Specifications

General

Brand	WEG
Model	SSW-03 Plus Series
Category	Controller
Language	English