ABB rec670 Applications Manual

15.1.3.2 Delta blocking scheme
GUID-F4359690-F433-46CB-A173-8C14559E3FCF v1
Set
Operation = Enabled
Set SchemeType = DeltaBlocking
Set tCoord = 0 s
Set
tSendMin = 0 s
Set
Unblock = Disabled
(Set to NoRestart if Unblocking scheme with no alarm for loss of guard is to be
used.
Set to Restart if Unblocking scheme with alarm for loss of guard is to be used)
Set
tSecurity = 0.035 s
Set
DeltaI = 10 %IB
Set
DeltaV = 5 %VB
Set
Delta3I0 = 10 %IB
Set
Delta3V0 = 5 %VB
15.1.3.3 Permissive underreaching scheme
M13869-25 v4
Set
Operation = Enabled
Set SchemeType = Permissive UR
Set tCoord = 0 ms
Set
tSendMin = 0.1 s
Set
Unblock = Disabled
Set tSecurity = 0.035 s
15.1.3.4 Permissive overreaching scheme
M13869-34 v4
Set
Operation = Enabled
Set Scheme type = Permissive OR
Set tCoord = 0 ms
Set
tSendMin = 0.1 s (0 s in parallel line applications)
Set
Unblock = Disabled
Set tSecurity = 0.035 s
15.1.3.5 Unblocking scheme
M13869-43 v4
Set
Unblock = Restart
(Loss of guard signal will give both trip and alarm
Choose NoRestart if only trip is required)
Set
tSecurity = 0.035 s
1MRK 511 401-UUS A Section 15
Scheme communication
Bay control REC670 2.2 ANSI 473
Application manual

ABB rec670 Specifications

General

Brand	ABB
Model	rec670
Category	Control Unit
Language	English