Selecting Motor Protection Settings - Siemens SIRIUS 3RW44 System Manual

5.4.9 Selecting Motor Protection Settings

SIEMENS
3RW44
Menu
ESC OK
Display mea- 1 1
sured value
select
ESC OK
Status display 2
select
ESC OK
3
Settings
select
OK
ESC OK
1
Parameter
set 1
select
ESC OK
2
Parameter
set 2
select
ESC OK
3
Parameter
set 3
select
ESC OK
4
Inputs
select
ESC OK OK
5
Outputs
select
ESC OK OK OK
6
Motor
select
ESC
OK
OK
Figure 5-24:Selecting motor protection settings
Notice
In the case of heavy starting and set values of the tripping class
limit tripping reserve" parameter value to 0 s (deactivated) and increasing the parameter "Prewarning motor
temperature" to 95 % Otherwise, a warning message regarding motor protection will be issued when starting.
Notice
If CLASS settings other than 5(10a) or 10 are selected, it may be necessary to check and adjust the set values for the
rated operating current I
the error message "Impermissible Ie/ CLASS settings" may be issued.
For the maximum permissible set value for the rated operating current I
please refer to Chapter 10.3.2 "Technical Data Power Unit".
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04
Tripping class
CLASS 10
ESC
Current asymm.
limit value
40.0 %
ESC
Prewarning limit
tripping reserve
200 s
ESC
Prew. limit motor
heat build up
80.0 %
ESC
Idle time
deactivated
ESC
Pre-charge
time
60 s
ESC
Protect. against
voltage failure
Yes
ESC
Temperature
sensor
Deactivated
ESC
of the motor (Chapter 5.4.2 "Entering the Motor Data") in all 3 parameter sets, since otherwise
e
Adjustable
from ... to
None; CLASS 5(10a);
1
CLASS 10; CLASS 15;
CLASS 20; CLASS 30
change
OK
2
30 ... 60 %
change
OK
3
0 ... 500 s
change
OK
4
0 ... 100 %
change
OK
5
deactivated; 1 ... 100 s
change
OK
6
deactivated; 60 ... 1,800 s
change
OK
7
Yes; No
change
OK
8
Deactivated
Thermo click
change
PTC type A
OK
CLASS 20, we recommend setting the "Prewarning
≥
e
of the motor in regard to the CLASS settings
Commissioning
5-31