Data Formats And Data Sets; Characteristics - Siemens SIRIUS 3RW44 User Manual

8.10

Data Formats and Data Sets

8.10.1 Characteristics

Control data
Messages
Diagnosis
Current values
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
The soft starter acquires a multitude of operating, diagnostics and statistics data.
Data transmitted to the soft starter, e.g. Motor LEFT switching command, Trip
reset, etc.
Data format: Bit
Data transmitted by the soft starter indicating the current operating status, e.g.
Motor left, etc.
Data format: Bit
Data transmitted by the soft starter indicating the current operating status, e.g.
Overload fault mode, etc.
Data format: Bit
Current values are coded in different current formats, in
• 6-bit current format,
• 8-bit current format and
• 9-bit current format:
9-bit current format
8-bit current format
6-bit current format
Bit 8 7 6 5
3 2 1 0
2 2 2 2 2
1 + 0.5 + 0.25 + 0.125 + 0.0625 + 0.03125 = 1.96875 (q 0 to 197 %)
4 + 2 1 + 0.5 + 0.25 + 0.125 + 0.0625 + 0.03125 = 7.97 (q 0 to 797 %)
8 + 4 + 2 1 + 0.5 + 0.25 + 0.125 + 0.0625 + 0.03125 = 15.97 (q 0 to 1597 %)
Figure 8-8: Current formats
Current values are
• Motor current I (6-bit current format)
max
• Phase currents I
L1max
• Last trigger current (9-bit current format)
• Maximum tripping current (9-bit current format)
PROFIBUS DP Communication Module
4 3 2 1 0
-1 -2 -3 -4 -5
2 2 2 2
, I , I (8-bit current format)
L2max L3max
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