Toshiba GR200 Series Instruction Manual page 510

Supervision of disconnector contact (DS fail)
9.2.26
The auxiliary contacts of disconnector are supervised. When the main contact is 'Open', N/O
and N/C contacts of the auxiliary-contact are represent as 'Open and Closed'. However, if both
N/O and N/C are represented as 'Open', the auxiliary-contact operates incorrectly. Likewise, if
both are represented as 'Closed', the auxiliary contact operates incorrectly.
Error level
(i)
The default error level is set at level 3 (Minor error), but the user can program the level using
settings [CHK_DS:LVl]; set On for the setting [CHK_DS:Sw]. The time for the detection can be
set using [TDSSV], which is provided in Chap.
error is cleared, it is reset instantly.
Error message
(ii)
When detecting an error, an error message will be shown on the LCD screen and an LED is lit.
Table 9.2-54 Error messages provided by the supervisor in CHK_DS_CBP
Message and level
DS11 fail
DS12 fail
DS13 fail
DS21 fail
Error level
Table 9.2-55 Detailed information in Hexadecimal in CHK_DS_CBP
Display
area
10000000: CH1
01000000: CH2
00100000: CH3
00010000: CH4
Top row
00001000: CH5
00000100: CH6
00000010: CH7
00000001: CH8
10000000: CH17
01000000: CH18
00100000: CH19
00010000: CH20
Middle row
00001000: CH21
00000100: CH22
00000010: CH23
00000001: CH24
Bottom row
Meaning of the information
Detection of the failure among DS11, DS12, DS13, and DS21
Minor error (Level 3)
Meaning of the detailed information
Left column
(No information displayed)
- 496 -
Protection relay: Contact supervision
Right column
10000000: CH9
01000000: CH10
00100000: CH11
00010000: CH12
00001000: CH13
00000100: CH14
00000010: CH15
00000001: CH16
00000001: ORed state in all CHs
(No information displayed)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
6F2S1931 (0.20)
. If the