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208 SICAM RTUs, SICAM AK 3 User Manual
Edition 07.2016, DC2-028-2.03
5.1 Operation And Display Elements
Meaning of the LED Symbols
Symbol State Symbol State
˜
lights up
§
flash pulse regularly
™
dark
V
flash pulse irregularly
ž
flickering (data transfer) x not relevant
5.1.1 Power Supply
The LED “RY” on the front panel displays the operating state (see 2.1.1, PS-2630, PS-2632).
System Display Elements
Name Color Function LED Meaning
RY yellow Ready
˜
Power supply ready
§ • Temperature > 95°C
• Temperature sensor defective
V
Call timeout (module not called by the master
control unit)
5.1.2 Basic System Elements
LEDs on the front panel (refer to 2.2, Basic System Elements ) display various states. The ar-
rangement of the LEDs comprises
• System display elementsDisplay of operating- and error states of the system
• Function display elementsDisplay of the readiness of the protocol elements
• Communication display elementsDisplay of the operating- and error states of the proto-
col elements
Which states are displayed, is determined by
• the firmware implemented
• the protocol elements used
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