Ametek UPLC-II - Page 43

January 2016 Page 2–31
2
GBT =GuardBefore Trip
TAG= Trip AfterGuard
CB=CheckBack Trip= TripFreq.Received
DTT =Direct Transfer Trip
LR=LineRelaying
U12
U18
NORMAL GBT
U6
U16
GBT OVERRIDE
U10
U15
U8
U1
U11
U9
U2
U13
U7
U5
U3
U17
U4
GBT DISABLED
LogicLevel1
LogicLevel1
1=LR TRIP OUT
1=LRGUARDOUT
1=NOISEOUT
0
1=FADE ALARMOUT
1=FADEMARGINOUT
1=CB TRIP OUT
1
D
CLK
Q
Q
PR
CL
PRE-TRIP
TIMER
TRIP HOLD
TIMER
GBT OVERRIDE
TIMER
GBT RESTORE
TIMER
0
______
N
0
______
N
GUARDHOLD
TIMER
GBT TIMER
N=0to100msin
1mssteps.
N=0to100msin
1mssteps.
N=0to30msin
1mssteps.
Fromreceiverfront-end andchannelbandpass digitalfilter. FSdiscriminator, amplitudedetector& fastnoisedetector
1= TRIP FREQ 1=GUARDFREQ 1=NOISE
LOWLEVEL
HOLD TIMER
0
__________
3ms
NOISEHOLD
TIMER
GBT Mode
Thesearenotreal
switches. Theyshow programmedsetting.
1=LOW LEVEL
3ms
__________
0
UNBLOCK
DELAY
N=0to100msin
1mssteps.
_________
N
0
UNBLOCK TIMER
N=0to500msin
1mssteps.
N
_________
0
_________
N
0
TAG TIMER
1000ms
___________
0
200ms
0
___________
1=GOOD CHANNEL OUT
0
_________
120ms
_________
0
120ms
TheUnblockfunctionisdisabled whenUnblock Timerisprogrammed
toN=0.
Receivedtripsetstimerto"N"
(timeroutputisthen0).
1=UnBlock Trip
(ForSOEsonly).U14
Figure 2–14. FSK Mode: 2-Frequency Logic Diagram