Siemens HF 35M 562 B Specifications Page 149

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Device functions
SIMATIC - ET 200pro motor starters
GWA 4NEB 950 5661-02 DS 06
10-11
10.4 Current limits
Description
The motor current and the current limits can be used to derive information on
a number of system states:
10.4.1 Device parameters
Response with zero current violation
(can be parameterized with standard and high feature motor starters)
The zero current detection function is activated when the motor current in
all 3 phases becomes lower than 18.75 % of the set rated operating current.
This device parameters is used to determine how the motor starter reacts
to zero current detection:
Warning
Disconnect
Caution
When switching on the motor, the zero current detection is suppressed for
approx. 1 second!
Response with current limit violation
(can only be parameterized with high feature motor starters)
This device parameters is used to determine how the motor starter reacts
to current limit violation:
Warning
Disconnect
System state Current value Protection by:
System becomes more inert, for exam-
ple on account of damaged bearings
System becomes freer, for example
because the processing material in
the system has been used up.
Current is higher
or lower than
usual
Current limits
System is blocked! Very high current
flowing
Blocking protection
Motor running at no-load, e.g. due
to system damage!
Very low level of
current flowing
(< 18.75 % of I
e
)
Residual current
detection
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