Data Formats 401 To 426 - Siemens SENTRON VL Series System Manual

8.7.7

Data formats 401 to 426

The table below shows the format (401) "Trip unit: tripping operations'", which shows the last
unacknowledged tripping operation of the trip unit.
Table 8- 79
The table below shows the format (402) "Trip unit: alarms" via which the trip unit
communicates the currently pending alarms.
Table 8- 80
The table below shows format (405) "Contact status" that is calculated empirically from the
maintenance information.
Table 8- 81
The table below shows the format (406) "Control trip unit" via which the statistical information
can be reset, among other things.
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
Format (401) Trip unit: "tripping operations"
Byte Value
0 0x00
0 0x01
0 0x02
0 0x04
0 0x08
Format (402) Trip unit: "Alarms"
Byte Value
0 0
0 1
0 2
0 3
0 4
0 5
0 6
0 7
1 0
1 1
Format (405) "Contact status"
Byte Value
0 0
0 1
0 2
No tripping operation
Instantaneous short circuit (I)
Short-time delayed short circuit (S)
Ground fault (G)
Overload N-conductor
Phase unbalance current
Microprocessor fault
Overtemperature
Leading overload tripping alarm
Short-time mean value current
No maintenance necessary yet on main contacts
(Note: Despite this, the main contacts must be checked after every
tripping operation!)"
Perform immediate visual inspection on main contacts.
Prepare maintenance of the main contacts
Meaning
Overload (L)
Meaning
Overload
Load shedding
Load pick up
Ground fault
Meaning
Data library
8.7 Formats
275