13
XA DEVICES
REF
CLK
CMD
SIG
REF
CLK
CMD
SIG
REF
CLK
CMD
SIG
Non-Power Limited
End-of-Line
Supervision Device
XA Loop Wiring
Shield
TB3
SHLD
SLAVE
SW2
ON | OFF
4-WIRE | 3-WIRE
SLAVE | MASTER
256 | 257
MASTER
CLASS A
CLASS B
REF
SIG
CMD
CLK
REF A
SIG A
CMD A
CLK A
SHLD
REF B
SIG B
CMD B
CLK B
12 AWG (3.309 mm
2
)
to
18 AWG (0.8231 mm
2
)
To connect the XA Loop Interface Card (XALIC) to devices using Class B wiring, do the
following.
1. On TB3 jumper REF A to REF B, SIG A to SIG B, CMD A to CMD B and CLK A to CLK
B. If the jumper is absent a XA Loop Wiring fault will be indicated.
2. Route wire from the CLK B, CMD B, SIG B, REF B and SHLD outputs of the XALIC card
to the appropriate inputs on a XA Loop device.
3. Route wire from the first XA Loop device to the next one. Repeat for each appliance.
4. Connect an End-of-Line Supervisory device at the end of the XA Loop.
Note:
This configuration shall not be used if the FACP is providing preaction/deluge
service.
Figure 10. Class B Wiring, XALIC Configured as XA Loop Master
Continued on next page
Connecting to the XA Loop,
Continued
Class B Wiring –
XALIC Configured
as XA Loop Master
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Summary of Contents for 4100-3115 XALIC
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