Toshiba GR200 Series - 10.2.38 Aux. contacts monitoring (DPSY;DOPS;TOPS faulty or undefined); (i) Correspondence between CHK functions and applications

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1275 -
10.2.38 Aux. contacts monitoring (DPSY/DOPS/TOPS faulty or undefined)
When signals of an external device (i.e., a circuit breaker) are provided in a pair of auxiliary
contacts
1
, the signals may be grouped into four states: Open, Fault, Undefined, and Closed.
This is because, two different kinds of N/C and N/O contacts operates in the other way around;
hence, there is a possibility that the generated signal may have an incorrect condition (Faulty)
or an intermediate condition (Undefined). When receiving the signal by the BI circuit
1
of the
IED, a preliminary logic
2
starts to group the receiving signals into Open and the other states.
Consequently, the control function is able to operate securely not being affected by improper
signals (i.e., Fault, Undefined). In the supervision function, the received signals are sorted
with the definition of the error levels programmed by the manufacture, but the user can
program the sorting procedure arbitrarily using the settings in CHK functions
(CHK_DPOSSYN, CHK_DPOS, and CHK_TPOS).
1
Note: The BI circuit is discussed in the Binary IO module. For more information, see
Chapter Technical description .
2
Note: The preliminary logic is designed to acquire a signal coming from the BI circuit
and to sort the signal into the ‘Open’, ‘Fault’, ‘Undefined’, and ‘Closed’ states. The
preliminary logic is furnished in every control functions. For example, we can find
the logic in section “ Setup for BIO module ” in Chapter Control and monitoring
application: Double position controller with synchronizing-checking .
(i) Correspondence between CHK functions and applications
There are a number of CHK operations in the automatic supervision function; hence, the user
is required so that the control applications correspond with the CHK functions, as shown in
Table 10.2-78.
Table 10.2-78 Correspondence table for the control applications
CHK functions
Control applications
Function ID
Names
Function ID
Names
229001
CHK_DPOSSYN
511001
DPSY01 function†
DPSY02 function†
229101
CHK_DPOS
512001
DPOS01 function
DPOS02 function
DPOS03 function
….
DPOS72 function
229201
CHK_TPOS
513001
TPOS01 function
TPOS02 function
….
TPOS24 function
†Note: To detect the “Faulty” and “Undefined” states in the DPSY01 function, the user
can adjust the time for supervision using settings [DPSY01-FLTTIM] and
[DPSY01-UDFTIM], each of which is accommodated in the DPSY1 function. Then,
set [DPSY01-FLTEN] On for the operation. Likewise, settings are available in the
DPSY02 function.