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10.2.13 Supervision of analog input data on VCT (ACC error)
VCT
failures can be detected by the supervision function.
1
Note: see Chapter
1
627).
Error level
(i)
Error has been set at level 1 (Serious error
[CHK_ACC:LVl]. Remember that the user needs to set On for the [CHK_ACC:Sw]. The
manufacturer has set one (1) second to detect a failure. The IED automatically will reset the
error within a second when the failure is solved.
Note: When the error is detected, IED operation is stopped forcibly entirely.
2
Error message
(ii)
When detecting an error, the error message will be shown on the LCD screen. LED will be lit
up.
Table 10.2-25 Error messages provided by the supervisor in CHK_ACC1
Message and level
AI(ACC) error
Error level
Table 10.2-26 Detailed information in Hexadecimal in CHK_ACC1
Display
area
00000001: P error
00000002: N error
Top
00000004: Neg error
00000010: P(H) error
row
00000020: N(H) error
00000040: Neg(H) error
Middle
row
Bottom
row
Technical description: Transformer module for AC analog input
Conversion deterioration of VCT
Serious error (Level 1)
Meaning of the detailed information
Left column
Plus rev value / (none)
Plus rev value
- 814 -
; default), but the user can change it with setting
2
Meaning of the information
Plus value / Minus value
Plus value / Minus value
(No message displayed)
6F2T0207 (0.01)
(→p.
Right column
GRE200 (5,6)
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