11
Commissioning and start
HB-37500-810-11-16F-EN SCU Installation Manual - Master and Slaves - SARC
Page 142 of 303
Status: 09.06.2022
11.3.
LED displays
The SCU unit has 2 LEDs:
EC ST and RUN:
LED
Colour
Display
Meaning
EC ST
Off
Init
Green
Flashing
PRE-OPERATIONAL
Green
Single
Flash
SAFE-OPERATIONAL
Green
On
OPERATIONAL
Red
Off
No error
Red
Flashing
Invalid configuration
Red
Single
Flash
Local error:
Red
Double
Flash
Watchdog Timeout
RUN
-
Off
No power supply voltage
Orange
Flashing
Control is in startup phase, or STOP, or
firmware update is carried out.
Orange
Permant
light
Assembly in local mode (without network
connection)
Green
Blinking
Control function correct; applicatoin runs,
but has not (yet) been validated.
Green
Permanent
light
Control function correct; application runs
and is validated.
Red
Blinking
Alarm (application error)
–
the assembly is
in safe operating state. Error status can be
reset
Red
permanent
light
Fatal error
–
the assembly is in safe
operating state.
Table 7: LED displays
NOTICE
For all operating states except RUN, the displays are passivated by the
firmware, i. e., the displays are safely disconnected. In the RUN status, the
status of the plant depends on the implemented PLC program.
Summary of Contents for SCU Series
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