Toshiba GR200 Series Instruction Manual page 418

Trip circuit (TRC)
The trip circuit (TRC) scheme issues trip commands to the circuit breakers (CB#1, CB#2) when
it receives trip signals from the protection functions (which are identified with 'FC9', etc. to
represent ZS relay, etc.). The TRC function is able to receive an alternate trip signal generated
by an additional relay external to the IED using PLC connection points via the binary IO
module (BIO)†. If the additional relay can provide a check-signal to condition tripping,
increased reliability can be achieved within the IED when using the check-signal as an input
to the TRC logic (i.e., fail-safe operation is realized by the operation of the additional relay).
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Note: The implementation of particular features is dependent upon the selection of
hardware and the configuration of functions. Several IED models do not support certain
features. To determine whether a particular feature has been implemented within an IED,
identify the IED ordering number; and check the order number for the "G&T position" whilst
referring to the comparison table below. For more information, see
Table 2.26-1 Comparative table in respective ordering numbers
✓: Applicable
Figure 2.26-1 shows that the function is made with following logics:
Sec. Feature
– Main features
NA: Not applicable)
- 397 -
Ordering No. at "G&T"
31 32
✓ ✓
6F2S1915 (0.46)
Appendix: Ordering
.
GRZ200 (Soft 031 & 032)