Status Of The Etu - Siemens SENTRON 3WA System Manual

Status of the circuit breaker

3.4 Status of the ETU

Number of tripping operations
Separate registers exist to indicate the number of individual tripping types.
Number of all tripping operations
Number of GF tripping operations
Number of INST tripping operations
Number of LT tripping operations
Number of residual current tripping operations
Number of reverse power protection tripping operations
Number of S / dST tripping operations
3.4 Status of the ETU
The status of the ETU600 electronic trip unit can be indicated and evaluated in the "ETU
status" register.
Name
ETU status
Description
ETU defective
Overload alarm 1
Overload alarm 2
GF alarm
Pre-alarm
Check ETU settings
ETU in error-free operating mode
Test mode
DAS+ active
Parameter set B active
ETU not calibrated
18
0x0093
0x0095
0x0097
0x0099
0x009B
0x009D
0x009F
Register (0x0000 HEX)
0x61DA
Bit Comment
0 Determine the cause of the error using
register 0x61DE "ETU error messages".
1 Indicated by orange "AL" LED on ETU600.
Overload alarm AL1 can be set between
40 and 100% I
threshold AL1".
2 Indicated by red "AL" LED on ETU600.
Momentary current ≧ 100% I
Can result in LT overload tripping.
3 GF current can be read out in the associ-
ated I
GF
5 Generates an alarm before a protection
tripping operation occurs.
A pre-alarm is available for the LT and N
characteristic curves.
6 ETU error detected, please contact Ser-
vice.
8 Equivalent of ETU sign-of-life contact.
9 Not currently used.
11 For more information, see section DAS+
status (Page 22). Parameter set B func-
13
tions according to the same principle as
DAS+.
15 ETU error detected, please contact Ser-
vice.
System Manual, 11/2021, 92310000004-02
in register 0x61EB "Alarm
r
.
r
current.
3WA Air Circuit Breaker Communication