Siemens SIRIUS 3RW44 User Manual page 49
Soft starter
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Also See for SIRIUS 3RW44:
- Manual (292 pages) ,
- System manual (255 pages) ,
- Getting started (38 pages)
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Quick start menu, when switching on for the
first time or after executing a command
"Basic factory settings"
Information on quick start menu:
After applying 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 once to commission the soft
starter for the first time.
If you confirm the last item, "Save settings?", by
entering "yes" in the quick start menu, you can
only return to this menu by resetting the device
back to its basic factory settings. (See manual or
operating instructions)
This overwrites all settings made up until that
point.
Information on application selection:
Standard parameters are recommended due to
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 from Section "Start command 'Soft
starter on'" onwards.
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 whether the selected
The motor reaches its
limiting torque is high enough
nominal rotational
(recommended ³ 150 %)
speed
- quicker than desired
with an excessively
high starting current
- not softly
- according to the
specified ramp time if
no current limiting has
Motor:
been set
Increase DC braking
Increase
Decrease
torque or increase
stopping
stopping
stopping time
time or
time
decrease
The
stopping
motor
torque
continu
es to
Soft stop
run for
Pump stop
The motor
too
stops
long.
abruptly,
not softly.
The water
can be
heard
during
pump
operation.
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
Select language
Select application
Set the rated operating
current 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 current
limiting value
The motor
- hums and does
not start
The motor reaches
immediately
its nominal rotational
- does not start at
speed
all
- slower than
(motor stuck)
desired,
- not at all
(motor stuck)
Reduce DC braking
torque or reduce
stopping time
The
The
motor
motor
does not
comes to
come to
a
a
standstill
DC braking
standstill
but the
braking
current
continues
to flow.
(Motor
hums
when at a
standstill)
Yes
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
sudden
increase in
torque
Motor:
No
Increase
Increase DC braking
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
standstill, or
Combined braking
continues to run at
a constant speed
during the braking
process
Quick commissioning
3RW44 SIRIUS soft starter
Wiring inspection
- Control unit and
- Power unit
Check and connect the
voltages in the control and
main circuits
Yes
Fault message
on display?
No
Initial parameterization
or starter in basic
factory settings?
No
Start command "Soft starter on"
Fault message
in display
No
Does the motor
immediately start
No
softly?
Yes
Does the motor reach
its nominal rotational
speed quickly and within
the desired time?
Yes
Switch off soft
starter
Which
stopping mode
is selected?
Reduce DC braking
No
torque or reduce
stopping time
The motor
comes to a
comes to a
standstill
standstill as
but the
braking
current
continues to
flow. (Motor
hums when
Save the changed parameters in
at a
the menu item: Settings > Saving
standstill)
options > Save settings.
Commissioning is complete.
No
Commissioning
"Soft starter off"
Correct fault (for possible faults
see Chapter 7)
"Soft starter off"
Correct fault
(for possible faults see
Chapter 7)
Yes
Coasting down
Pump stop,
torque control,
braking
Motor
desired
Yes
5-5
- Quick Links:
- Diagnosis and Messages
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