Toshiba GR200 Series - 10.2.13 Supervision of analog input data on VCTs (AI ACC error); (i) Error level; (ii) Error message

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1248 -
10.2.13 Supervision of analog input data on VCTs (AI ACC error)
It is possible to detect the failure of the analog to digital conversion in the VCT module†.
†Note: For more information about the VCT, see Chapter Technical description:
Transformer module for AC analog input . The function can operate for respective
VCTs.
(i) Error level
Generally, the default error level has been set at level 1 (Serious error
1
). For example, the user
can program the level using setting [CHK_ACC1:LVl] when the VCT module at the VCT#1
2
slot should be supervised. Set On for the settings [CHK_ACC1:Sw]. The manufacturer sets one
(1) second to detect the failure; it is reset within a second when the failure is cleared.
1
Note: When the error is detected, the entire operation of the IED is stopped forcibly.
2
Note: The location of the VCT is discussed in Alpha-numerical references. See 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 10.2-27 Error messages provided by the supervisor in CHK_ACC
Message and level
Meaning of the information
AI#x(ACC) error
Detection of the conversion deterioration at VCx slot
Error level
Serious error (Level 1)
Table 10.2-28 Detailed information in Hexadecimal in CHK_ACC
Display
area
Meaning of the detailed information
Left column
Right column
Top
row
00000001: P error
00000002: N error
00000004: Neg error
00000010: P(H) error
00000020: N(H) error
00000040: Neg(H) error
Plus value / Minus value
Middle
row
Plus rev value / (none)
Plus value / Minus value
Bottom
row
Plus rev value
(No message displayed)