Siemens 7UT51 Instruction Manual page 112

9
Thermal Overload Protection (49-1, 49-2)
Thermal Overload Protection (49
Trip
The thermal overload protection will trip if and when ALL the
following statements are true:
• the corresponding 49 element has picked
dropped out or already caused a trip,
• the corresponding 49 time delay has expired,
With the default marshalling, the occurrence of logical event 1571
or 1621 will light and latch LED 9 (49
(as for any trip event) LED 1.
Configuration Error
Configuration Error: One of the 49 functions has been assigned to
winding 3 (Address 7824 or 7825), but the protected device
(Address 7801) does not have a third winding (7UT513 only)
Table 9.1 Events Related to Thermal Overload Protection (49-1 and 49-2)
112
- -
1 and 49 2) Occurrence
-
up and it has not yet
- -
1) or LED 10 (49 2), and
LCD Abbreviation Event
>49 O/L1 TRIP 1571
>49 O/L2 TRIP 1621
>49 O/L1 ErrS3 1576
>49 O/L2 ErrS3 1626
7UT51 v3
Oper Fault In/Out
C G S T
C G S T
C S
C S
PRIM-2330C