Chapter 6. Description of Operation of Protection Subsystem
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M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
6.17 Alarm Codes
In the following table are the protection alarm codes and their descriptions. These codes are
displayed in the protection display.
Software Alarms - protection-
Code Description
01 00 Adjustment loss
04 00 Check-sum in the RAM zone pertaining to the curves
08 00 CIM communication failure with the control subsystem
80 00 Protection out of order
Hardware Alarms - protection -
Code Description
00 01 E2PROM writing error
00 02 ADC alarm
00 04 ADC error
00 06 Internal voltage level error
00 08 Low battery clock
00 10 Stopped clock
00 20 E2PROM file calibration error
00 40 RAM file calibration error
00 80 Memory test error
Software Alarms - control-
Code Description
01 00 Adjustment loss
00 40 Error on the control one-line diagram
00 80 Control logic error
10 00 Direction logic alarm
20 00 Opcodes logic alarm
40 00 CIM communication failure with the protection subsystem
80 00 CIM communication failure with the measurement circuit board
Hardware Alarms - control-
Code Description
00 01 E2PROM writing error
00 02 ADC alarm
00 04 ADC error
00 08 Low battery clock
00 10 Stopped clock
00 20 Input and/or output transducers error
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