Siemens SIRIUS 3RW44 System Manual page 49
Soft starters
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Also See for SIRIUS 3RW44:
- Manual (292 pages) ,
- User manual (262 pages) ,
- System manual (132 pages)
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Quick commissioning menu, when switching on for the
first-time or after executing command "Factory settings"
Information on quick start menu
After supplying the control voltage for the first time, you will be
automatically directed to the quick start menu. You must
complete the entire quick start menu to commission the soft
starter.
If you confirm the last item "Save settings?" with "yes" in the
quick start menu, you can only return to this menu by resetting
the device back to the basic factory settting. (See manual or
operating instructions)
This overwrites all settings made up until that point.
Information on application selection:
Standard parameters are recommended on the basis of the set
type of application.
If the required load is not listed, choose a fan in order to
preselect the necessary start parameters.
In general:
The parameters are suggested settings.
The parameters may need to be optimized, as explained in the
Section "Start command "Soft starter on".
1. "Soft starter off"
1. "Soft starter off"
2. Increase starting time in
2. Reduce starting time in menu
menu item Settings, or
item Settings or if current
3. If current limiting has
limiting has been set, increase
been set, possibly reduce
the current limiting value.
current limiting value
3. If the torque control is active,
check if the selected limiting
torque is high enough
(recommended ≥ 150 %)
The motor reaches its
nominal rotational
speed
- quicker than desired
- not softly
- if no current limiting
has been set according
Motor:
to the specified ramp
time
Increase DC braking
Decrease
Increase
torque or increase
stopping
stopping time
stopping time
time
or decrease
stopping
torque
The
motor
The
Soft
keeps
motor
stopping
going
comes to
Pump stop
for too
a stop
long.
abruptly,
not softly.
The
water can
be heard
during
the
pumping
opera-
tion.
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04
Select language
Select application
Set the rated operating cur-
rent of the motor
Set starting time
Set current limiting
value
Save settings
1. "Soft starter off"
2. Increase the start voltage or
start torque in menu item
Settings or
3. if current limiting has been
set, possibly increase the cur-
rent limiting value
The motor
- hums and does not
start immediately
The motor reaches
- does not start at all
its nominal rota-
(motor stuck)
tional speed
- slower than
desired,
- not at all
(motor stuck)
Reduce DC braking
torque or reduce
stopping time
The
The motor
motor
comes to
does not
a stand-
come to
still but
a stand-
the brak-
DC braking
still
ing cur-
rent con-
tinues to
flow.
(Motor
hums
when at a
standstill)
Check and connect the
voltages in the control and
main circuits.
Yes
Initial parameterization or starter
in basic factory settings?
Check set parameters in Settings > Parameter set > Motor.
Set starting and stopping parameters in Settings > Parameter
set > Starting or stopping settings according to the Table
"Suggested setting for commissioning" on the basis of the
respective application.
1. "Soft starter off"
2. Decrease the start
voltage or start torque
in menu item Settings
The motor
starts with a
strong sud-
den
increase in
torque
Motor:
No
Increase DC braking
Increase
torque or increase
dynamic
stopping time
braking torque
Yes
Does the motor
continue to run during the
braking process at a
constant speed (no
recognizable
braking effect)?
Motor does not
comes to a stand-
still or continues to
Combined
run at a constant
braking
speed during the
braking process.
Quick commissioning of the
3RW44 SIRIUS soft starter
Wiring control
- Control part and
- Performance part
"Soft starter off"
Correct fault
(for possible faults see 3RW44
system manual, Chapter 7)
Yes
Fault message
on display?
No
No
Start command "Soft starter on"
Fault message
in display
No
Does the motor
immediately
No
start softly?
Yes
Does
the motor reach
its nominal rotational
speed quickly and within
the desired time?
Switch off soft
Yes
starter
Which
stopping mode
is selected?
Reduce DC braking
No
torque or reduce
stopping time
The motor
Motor
comes to a
comes to a stand-
standstill
still as desired
but the
braking cur-
rent contin-
Yes
ues to flow.
(Motor hums
when at a
Save the changed parameters in
standstill)
the menu item: Settings > Safety
options > Save settings.
End of commissioning
No
Commissioning
"Soft starter off"
Correct fault
(for possible faults see
3RW44 system manual,
Chapter 7)
Yes
Coasting down
Pump stop,
torque control,
brakes
5-5
- Quick Links:
- Diagnosis, Messages
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