SIMATIC - ET 200pro motor starter
8-22 GWA 4NEB 950 5661-02 DS 04
8.3.3 Features
The electronic starters ET 200pro sDSSte / sDSte and sRSSte / sRSte
• Are suitable for switching and protecting 3-phase current consumer units up
to 5.5 kW at AC 400 V
• Are available in 2 setting ranges with 0.15 - 2 A and 1.5 - 12 A
• Have power electronics designed as 2-phase (L2 and L3 are controlled, L1 is
bridged)
• After motor start-up, the power thyristors of the soft starter are bridged via
integrated relays as of I
e
> 7 A
• Have a parameterizable electronic overload protection
• Upper and lower current limits can be specified and monitored for system
and process monitoring
• The motor starter can be parameterized for warning or shutdown in the event
of an overload or current limit violation
• An integrated protection mechanism detects a blocked motor and leads to a
quick stop
• Residual current detection integrated
• Asymmetry detection integrated
• The actual power is measured and transferred for evaluations
• Available diagnosis information of the soft starter (see Chapter 4)
• Display of switch state and motor starter status via LEDs
• Have a command of various types of start-up and run-down (soft start-up and
run-down, as well as a mix of both)
• Have a command of direct switching on and off (instant switching) of motor
for applications with high switching frequency
Caution
Phase L1 is not fed via the semiconductors in the sDSSte / sDSte and sRSSte /
sRSte.
Before working on the output, switch off the starter protection switch first.
Soft start-up function with automatic powering up detection
Torque-reduced start for three-phase induction motors:
The two-phase activation means that during the entire powering up time the
current is kept at low values. Peak loads as they arise in the case of a star-delta
start during switchover from asterisk to delta are prevented by the continuous
voltage influence.
Transient peak loads (inrush currents) are automatically prevented each time the
motor is switched on by means of a special activation function of the power
semiconductors.
Automatic powering up detection:
With a motor current of 1.5 x I
e
or after 4 s start-up, the powering up detection
is activated and switches at 1.2 x I
e
to the bypass or on devices without bypass
fully operates the semiconductors.
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