Maintenance and Repair
294
7SS52 V4 Manual
C53000-G1176-C182-3
Module
ZPS-SBK
On detecting a system failure, the protection system is reset. After three unsuccessful
restarts within a 3 second window of time, the device automatically removes itself from
service and indicates the failure by the alarm relay “
Device failure
”.
This is indicated on the ZPS-SBK by flashing of the 3rd yellow LED (H4). The cause
for the failure which blocked the protection can be read from the fault event buffer
(Chapter 8.2.1, page 292).
Module
ZPS-SBK
Module
ZPS-SK
Table 8-1
LEDs of the ZPS-SBK module
LEDs
Status
RED
H1r
GREEN
H1g
YELLOW1
H2
YELLOW2
H3
YELLOW3
H4
•
o
•
⊗
∇
Operational status
o
•
•
•
⊗
Failure status
(diagnosis by means of fault buffer
required)
o
bright
•
dark
∇
dim
⊗
flashing
Table 8-2
LEDs of the ZPS-BSZ module
LEDs
Status
RED
H1r
GREEN
H1g
YELLOW1
H2
YELLOW2
H3
YELLOW3
H4
•
o
•
⊗
•
Operational status
o
•
•
•
⊗
Failure status
o
•
o
•
•
Start-up not completed successfully
(diagnosis by means of fault buffer
required)
o
bright
•
dark
∇
dim
⊗
flashing
Table 8-3
LEDs of the ZPS-SK module
LEDs
Status
RED
H1r
GREEN
H1g
YELLOW1
H2
YELLOW2
H3
YELLOW3
H4
•
o
•
•
•
Fault-free cyclic process
o
o
•
•
⊗
Failure of one bay unit or
one channel
o
•
•
•
⊗
Failure of the SK module
o
bright
•
dark
∇
dim
⊗
flashing
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