Siemens SIMOCODE pro C, System Manual

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Description of system components
8.5 Current / voltage measuring modules (UM, UM+) for the SIMOCODE pro V High Performance device series
SIMOCODE pro
System Manual, 05/2019, A5E40507475002A/RS-AD/004
139
Measurement performance
The rate of measured value acquisition has been improved, and so updating of all measured
values within 200 ms can be assumed.
Tripping characteristic
The overload tripping characteristic, which is calculated in the measuring modules, has been
revised in the 2nd generation current / voltage measuring modules. By means of diverse
analyses, the characteristic curve has been adjusted further to the actual requirements for
overload release.
The tripping characteristic fulfills all basic points defined for overload protection
in IEC 60947-4-1. In particular in the range of the 2-fold motor rated current, the
characteristic curve was approximated to the practical conditions. Thus, the characteristic
curve has steepened slightly, which produces slower tripping in the range between 1.15-fold
and 6-fold motor rated current, and faster tripping in the range above 6-fold motor rated
current.
The tripping characteristics can be found in Chapter "Overload protection" in the manual
Parameterizing SIMOCODE pro
( https://support.industry.siemens.com/cs/ww/en/view/109743958 ).
The trip classes have been extended with trip class 7. Thus, if required, finer coordination of
the trip classes can be chosen in the lower range (if, for example, there is a wish to
approximate to the characteristic curve of the class 10 current measuring modules).
Interaction with the SIMOCODE basic units
The 2nd generation current / voltage measuring modules operate with the new functions
together with the basic units as from the following product versions:
● SIMOCODE pro V PB: From E15
● SIMOCODE pro V MR: From E03
● SIMOCODE pro V PN: From E10
● SIMOCODE pro V EIP: From E01.
NOTICE
Connecting current / voltage measuring modules to the basic unit
The 2nd generation current / voltage measuring modules must be connected directly to the
basic unit in order to achieve the full performance capability.