1SDH002031A1002 ECN000092998 Rev. B
SACE Tmax XT2
– XT4 | 72
D Zone selectivity
[2]
Characteristics
Ekip Touch has five selectivity links:
Name
Type
Description
Name for D
Szi
Input
Selectivity input in Forward direction
DFin
Szo
Output
Selectivity output in Forward direction
DFout
Gzi
Input
Selectivity input in Backward direction
Dbin
Gzo
Output
Selectivity output in Backward direction
Dbout
Szc
Municipality
Municipality of selectivity network
SZc
Configuration
For a correct configuration of D selectivity in a ring system:
1. Connect the selectivity output of each device (example: DFin) to the selectivity input going
the same direction on the device immediately following (example: DFout).
2. Connect all the Szcs of the devices of the same network to each other.
Logical table
The table shows all cases in which
– with zone selectivity enabled on the device – there is an
alarm condition or a zone selectivity signal coming from another device.
If the
direction of the malfunction
is the same as the
direction of reference
(see page 58 for
details) then the Forward output is activated. If instead the direction is contrary, the Backward
output is activated.
Fault
direction
Condition
DFin
Dbin
DFout
Dbout
Tripping
time
Comments
Forward
If < I7 Fw
0
x
0
x
No TRIP
The device is not in alarm
status
Backward
If < I7 Bw
x
0
x
0
Forward
If < I7 Fw
1
x
1
x
No TRIP
The device is not in alarm
status but transmits the
selectivity signal received on
the output of the reference
direction
Backward
If < I7 Bw
x
1
x
1
Forward
If > I7 Fw
0
x
1
x
t7 Fw sel
The device is in alarm status
and is the first to detect the
fault: trips in the time t7 Fw sel
or t7 Bw sel
Backward
If > I7 Bw
x
0
x
1
t7 Bw sel
Forward
If > I7 Fw
1
x
1
x
t7 Fw
The device is in alarm status
but is not the first to detect the
fault: trips in the time t7 Fw (or
t7 Bw)
Backward
If > I7 Bw
x
1
x
1
t7 Bw
NOTE: with zone selectivity activated, if the direction of the malfunction cannot be
determined the unit intervenes taking into consideration the lowest programmed time
between t7 Fw and t7 Bw, without activating any output (DFout or Dbout).
Summary of Contents for SACE Tmax XT2
Page 84: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 84 L curve Ekip M Touch S curve t k I2 ...
Page 86: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 86 G curve t k I2 G curve t k ...
Page 87: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 87 IU curve UV curve UV2 curve ...
Page 88: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 88 OV curve OV2 curve VU curve ...
Page 89: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 89 S V curve S2 V curve RV curve ...
Page 90: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 90 UF curve UF2 curve OF curve OF2 curve ...
Page 91: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 91 RP curve D curve ...
Page 92: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 92 OQ curve OP curve ...
Page 93: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 93 UP curve RQ curve ...
Page 94: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 94 ROCOF curve R JAM curve R STALL ...
Page 95: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 95 UC curve ...
