Toshiba GR200 Series - (iii) FRQ trip signal; (iv) UF;OF scheme logic

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 342 -
(iii) FRQ trip signal
The FRQ can issue a trip signal for the function of trip circuit (TRC) when Trip is set for scheme
switch [FRQ1-UseFor]. However, when an alarm signal is required in place of the trip signal,
the user should set Alarm for scheme switch [FRQ1-UseFor]. The TRC function is discussed
separately. (See Chapter Relay application: Trip circuit .)
(iv) UF/OF scheme logic
Figure 2.26-2 shows the scheme logic for the UF and OF functions. Each stage operates
independently. PLC connection point “FRQ1-BLOCK” is provided to block the stage1 when
blocking is required by an external signal. The user can connect the PLC connection point with
an external signal using PLC function. (For more information of PLC function, see Chapter
PLC function )
The under-voltage block (FRQBLK) element is used to block the FRQ operation, as
mentioned earlier (section 2.26.1(i)).
FRQ1-Chara
FRQ-S1-OPT
8100021C23
8100021B60
0.00 - 300.00s
TFRQ2
OF
FRQ2
UF
810002EBB1 FRQ-S2-OPT
&
&
Alarm
FRQ2-UseFor
Trip
≥1
&
t 0
&
&
&
1
8000011C23
8000011B60
0.00 - 300.00s
TFRQ1
OF
FRQ1
UF
800001EBB1 FRQ-S1-OPT
8000011BB1
&
&
Alarm
FRQ1-UseFor
Trip
≥1
&
t 0
&
&
&
1
FRQBLK
(UVBLK)
1
8700001C23
≥1
≥1
8500061C23
8500061B60
0.00 - 300.00s
TFRQ6
OF
FRQ6
UF
850006EBB1 FRQ-S6-OPT
&
&
Alarm
FRQ6-UseFor
Trip
≥1
&
t 0
&
&
&
1
FRQ-S2-OPT
FRQ-S6-OPT
FRQ-OPT-TRIP
FRQ-ARC-BLOCK
FRQ-OPT-ALARM
To TRC
OverFrq
UnderFrq
FRQ2-Chara
OverFrq
UnderFrq
FRQ6-Chara
OverFrq
UnderFrq
FRQ1-EN
On
FRQ2-EN
On
FRQ6-EN
On
1
800001EBB0 FRQ1-BLOCK
1
810002EBB0 FRQ2-BLOCK
1
850006EBB0 FRQ6-BLOCK
8100021BB1
8500061BB1
NON FRQBLK
To DFRQ
Figure 2.26-2 Scheme logic for FRQ function