Woodward HighPROtec MCDLV4, Manual, Page: 655 / 1275

Protective Elements
High Set Restricted Ground Fault Signals (Output States)
Signal Description
active Signal: active
ExBlo Signal: External Blocking
Blo TripCmd Signal: Trip Command blocked
ExBlo TripCmd Signal: External Blocking of the Trip Command
Alarm Signal: Alarm
Trip Signal: Trip
TripCmd Signal: Trip Command
Sig-Trans
–
Signal-Transfer over Protection Communication
Available elements:
Sig-Trans
The line differential protection is based on two protection devices that constantly communicate one with another via
a dedicated ProtCom protection communication interface. The module Sig-Trans (“Signal-Transfer over Protection-
Communication”) allows for configuring 16 signals to be sent from one protective device to the other via the
ProtCom connection.
Principle of the Sig-Trans functionality
655 MCDLV4 DOK-HB-MCDLV4-2E
Protective Device A
Transfer Signals
Φ
Signal1
. . .
. . .
. . .
. . .
. . .
. . .
Signal16
active
ExBlo
in1
in2
. . .
inN
out1
out2
. . .
outN
Module B
in1
in2
. . .
inN
out1
out2
. . .
outN
Module A
Φ
Φ
Φ
1
2
Transfer Signals
Protective Device B
Φ
. . .
. . .
. . .
. . .
. . .
. . .
active
ExBlo
in1
in2
. . .
inN
out1
out2
. . .
outN
Module B
in1
in2
. . .
inN
out1
out2
. . .
outN
Module A
Φ
Φ
Φ
4
5
3
Transfer Signals
Transfer Signals
ExBlo1
ExBlo2
. . .
. . .
. . .
. . .
. . .
. . .
ExBlo1
ExBlo2
. . .
. . .
. . .
. . .
. . .
. . .
Sig-Trans
T
ra
n
sf
e
rS
ig
n
al
s/
Z
0
1
Transmit
to remote device
Receive
from remote device
Transmit
to remote device
Receive
from remote device
Protection communication interface
Signal1
Signal16
Signal1
Signal16
Signal1
Signal16