Siemens SIRIUS 3RW55 Equipment Manual page 210

Functions
8.14 ATEX / IECEx
Parameters
Ex application
Ex relevant parameters
1)
(Ex-relevant parameters
1)
This parameter is displayed and can be set depending on the chosen Ex application.
1)
Selection of the motor protection function
Selection of the motor protection function in question influences the parameterization. If the "Ex
application" is activated, impermissible settings of the ATEX/IECEx-relevant parameters are
deactivated and therefore prevented. The following parameters are ATEX/IECEx-relevant:
210
Description
No (factory setting)
All ATEX/IECEx-specific function restrictions are not active. Ex parameter is not displayed.
Yes, with complete motor protection
• Both motor protection functions of the 3RW55 and 3RW55 Failsafe soft starters (electronic
motor overload protection and thermistor motor protection with temperature sensor) are
implemented in a safety-related manner.
Yes, with motor overload protection
• Only the motor protection function "Electronic motor overload protection" is implemented
in a safety-related manner.
• The motor protection function "Thermistor motor protection with Temperature sensor" is
not implemented in a safety-related manner.
Yes, with thermistor motor protection with temperature sensor
• Only the motor protection function "Thermistor motor protection with Temperature sen‐
sor" is implemented in a safety-related manner.
• The motor protection function "Electronic motor overload protection" is not implemented
in a safety-related manner.
Rated operational current I
)
Set the 3RW55 or 3RW55 Failsafe soft starters to the rated operational current of the motor as
stated on the type plate or design test certificate of the motor.
The 3RW5 HMI High Feature shows the value to be enabled in parentheses.
Tripping class (or trip class)
Make sure that the motor and the cables are dimensioned for the selected trip class. The rated
data of the 3RW55 and 3RW55 Failsafe soft starters refers to normal starting (CLASS 10E). For
heavy starting (> CLASS 10E), you may have to overdimension the 3RW55 or 3RW55 Failsafe
soft starter because you can only set an operational current of the motor that is lower than the
operational current of the soft starter.
The 3RW5 HMI High Feature shows the value to be enabled in parentheses.
Recovery time
Set the recovery time.
The 3RW5 HMI High Feature shows the value to be enabled in parentheses.
Motor connection type
Set the motor connection type.
The 3RW5 HMI High Feature shows the motor connection type to be enabled in parentheses.
Ex application
e
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006