Toshiba GR200 Series Instruction Manual page 1271

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
Transformer module for AC analog input
VCTs.
Error level
(i)
Generally, the default error level has been set at level 1 (Serious error
can program the level using setting [CHK_ACC1:LVl] when the VCT module at the VCT#1
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.
Note: When the error is detected, the entire operation of the IED is stopped forcibly.
1
Note: The location of the VCT is discussed in Alpha-numerical references. See chapter
2
Technical description: IED case and module slot
Error message
(ii)
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
AI#x(ACC) error
Error level
Table 10.2-28 Detailed information in Hexadecimal in CHK_ACC
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
Detection of the conversion deterioration at VCx slot
Serious error (Level 1)
Meaning of the detailed information
Left column
Plus rev value / (none)
Plus rev value
- 1248 -
Technical description:
. The function can operate for respective
.
Meaning of the information
Plus value / Minus value
Plus value / Minus value
(No message displayed)
6F2S1914 (0.49)
). For example, the user
1
Right column
GRL200 (Soft 033 & 037)
2