Siemens SIRIUS 3RW44 - Selecting Motor Protection Settings

Commissioning
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
5-31
5.4.9 Selecting Motor Protection Settings
Figure 5-24:Selecting motor protection settings
Notice
In the case of heavy starting and set values of tripping class
³CLASS 20, we recommend setting the "Prewarning limit
tripping reserve" parameter value to 0 s (deactivated) and increasing the parameter "Prewarning limit motor heat build-
up" to 95 %. Otherwise, a warning message regarding motor protection will be issued when starting.
Notice
If a CLASS setting other than 5(10a) or 10 is selected, it may be necessary to check and adjust the set values for the
rated operating current I
e
of the motor (Chapter 5.4.2 "Entering the Motor Data") in all 3 parameter sets, since otherwise
the error message "Impermissible Ie/ CLASS settings" may be issued.
For the maximum permissible set value for the rated operating current I
e
of the motor based on the CLASS settings,
please refer to Chapter 10.3.2 "Technical Data Power Unit".
change
ESC
Tripping
1
ESC
Motor
6
CLASS 10
OK
ESC
Current asymmetry
2
40.0 %
OK
ESC
Prewarning limit
3
200 s
OK
ESC
Prewarning limit
4
80.0 %
OK
ESC
Idle time
5
deactivated
OK
ESC
Pre-charge
6
60 s
OK
tripping reserve
class
limit value
motor heat build-up
time
ESC
Protection against
7
Yes
OK
voltage failure
Adjustable
from ... to
None; CLASS 5(10a);
CLASS 10; CLASS 15;
CLASS 20; CLASS 30
30 ... 60 %
0 ... 500 s
0 ... 100 %
deactivated; 1 ... 100 s
deactivated; 60 ... 1,800 s
Yes ; No
Deactivated
Thermo click
PTC-type A
ESC
Temperature
8
Deactivated
OK
sensor
ESC
Inputs
4
OK
ESC
Settings
3
OK
Display mea-
select
SIEMENS
Menu
3RW44
1
sured value
ESC
ESC OK
OK
select
1
Status
select
2
display
ESC OK
OK
ESC
Parameter
1
OK
ESC
Parameter
2
OK
ESC
Parameter
3
OK
set 1
set 2
set 3
OK
ESC
Outputs
5
OKOK
OK
OK
OK
select
select
select
select
select
select
select
change
change
change
change
change
change
change
protecin