19
The XPS can receive auxiliary power appliances via the dedicated auxiliary power tap (TB2). If
additional power is needed, any of the three NAC outputs can be used as auxiliary power inputs.
Figure 12, below, shows how the XPS should be wired for auxiliary power at any given terminal.
B+ B- A+ A-
B+ B- A+ A-
B+ B- A+ A-
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
AUX POWER
0V
24V
Figure 12. Auxiliary Power Wiring
Step 4. XPS Field Wiring,
Continued
Auxiliary Power
Wiring
TB1
XPS
TB2
Dedicated auxiliary
power screw terminal
NAC points must be
reconfigured as
auxiliary power input
points in the
programmer
All wiring is 18 AWG (0.8231 mm
2
)
(minimum) to
12 AWG (3.309 mm
2
)
(maximum).
All wiring is power-limited.
Auxiliary power may be taken from the dedicated auxiliary
power tap or from an unused NAC.
If auxiliary power is taken from NAC terminals, the NAC
must be configured as an auxiliary power point type in the
Panel Programmer.
Programming may be required for dedicated auxiliary
outputs.
Remove end-of-line resistors from circuits used for auxiliary
power.
External wiring is not supervised unless an end-of-line relay
is wired coil to auxiliary power, and Normally Open
contacts are monitored by a system power point. Relay
current must be considered as part of the load.
All wiring that leaves the building requires overvoltage
protection. Install module 2081-9044 (3 A) or 2081-9028 (¼
A) inside a UL Listed electrical box wherever wire enters or
exits the building. A maximum of four 2081-9044 Modules
may be connected to one channel. When using the 2081-
9044, the maximum alarm current is reduced to ¼ A for
that part of the circuit downstream of the module.
CE compliant systems require ferrite beads. Use kit 4100-
5129.
All auxiliary power taps are rated at 2 A. The total auxiliary
power current available is 5 A. The overall total current
available is 9 A, including NAC, auxiliary, and card power.
Current used for card power by modules plugged into the
PDI, and an current from aux. 24 V, must be deducted from
the 9 A available current.
Voltage rating: 24 VDC (nominal), 2 V P-P ripple
(maximum). The following devices connect to 2 A aux power:
-
2088-series relays and door holders
-
2098-series four-wire smoke detectors
-
2190-series monitor and signal ZAMs
-
4090-series IDNet ZAMs
-
4098-series four-wire smoke detectors and duct detectors
- 2190-9039
Printer
-
4190-9050/9051 4-20 mA ZAMs
-
4603-9101 LCD Annunciator
Resettable 24 V is obtained from any aux power point by
programming the point as type “resettable 24 V”. Refer
to the Programming Manual for details.
Devices
Primary
Return
TB1
TB2
24V
0V
TB1
TB2
To SPS
or RPS
Class A aux power wiring requires the use of 4090-9117
IDNet Power Isolators, as shown above.
4090-9117
ISOLATOR
4090-9117
ISOLATOR
Ferrite bead
for CE
compliance
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