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10.2.22 Supervision of binary IO module#4 (BIO#4 error)
A supervision function is provided to detect the operation failure in the forth binary IO modules
(BIO)†.
†Note: The function can operate for respective BIO modules mounted in the IED; the user
should have settings in them, which are located at the IO slot identified with the
number.
(i) Error level
Generally, the error level has been set at level 1 (Serious error
1
), as default. For example, the
user can program the level using setting [CHK_BIO4:LVl] when the BIO module at the IO#4
2
slot should be supervised; then, set On for the setting [CHK_BIO4:Sw]. The manufacture sets
one (1) second to detect the failure; it is reset in a second when the failure is cleared.
1
Note: The entire operation of the IED is stopped forcibly when the error is detected.
2
Note: The location of the IO slot is discussed in Chapter
Technical description: IED case
and module slot
.
(ii) Error message
When detecting an error, an error message can be shown on the LCD screen and an LED is lit.
Table 10.2-45 Error messages provided by the supervisor in CHK_BIO4
Meaning of the information
Detection of the BIO failure at IO slot#4
Table 10.2-46 Detailed information in Hexadecimal in CHK_BIO4
Meaning of the detailed information
00000001: CRC error
00000002: Connection error
00000004: Read back error
Count number by the CRC error
Count number by the connection error
Count number by the read-back error
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