3.0 SYSTEM COMPONENTS
3-4 Cheetah Xi 50 Installation Manual UL S2203
Rev 6, 09/2015 P/N: 06-369 FM
Exhibit 3-6: Cheetah Xi 50 Controller Terminal Specifications – Cont.
Function and Electrical
Ratings/Requirements
• RS232 port, power-limited and
supervised
• VESDA High Level Interface (HLI) P/N
68-023 connection point
• Intelligently links Xtralis VESDA detectors
to the Cheetah Xi 50 by zone #, 0 – 255.
Does not require SLC address
68-023 includes 14 ft. (4.27m) RS232 cable
P/N 02-3053 for connection to the Cheetah
Xi 50 controller P4
HLI must be powered from the Cheetah Xi
50 auxiliary power outputs or a ground fault
condition could occur
• Currently not used.
(+ -)
• Power-limited and supervised
• Interface point for Digital Alarm
Communicator Transmitter (Point ID
communication)
• DACT can be mounted inside the panel
or external in a separate enclosure
Terminal blocks accept 12 – 24 AWG
(485)
(shld,+ , -)
• Power-limited and supervised
• Connects to RS485 peripheral devices
• 31 peripheral devices maximum
• Typical circuit voltage will vary between 0
– 1 VDC. It should never be a constant
voltage or 0 VDC
• Peripheral devices must be configured as
supervised if 2-way communication is
required
RS485 wiring: Belden 9841 or equal. Use
Belden 82841, 82842, or 89841 for plenum
applications
Maximum wire length of 4000 ft. (1219m),
9600 bps, 5 VDC, 1mA
Maximum wire impedance 110Ω
Maximum wire capacitance 0.05uF
100Ω termination resistor is required on the
last device on circuit, P/N 02-2519 (supplied
with each device)
T-tapping of circuit is NOT allowed
Terminal blocks accept 12 – 24 AWG
#1 and #2
(+, -, shld)
• Power-limited and supervised
• Regulated auxiliary power output rated 24
VDC @ 1.75A maximum, regulated 28
volts maximum
• Fused by F3 and F4 for short circuit, 4A
field replaceable fuse, P/N 02-11412
• Used to power detectors, peripheral
devices, modules, etc. that require 24
The Cheetah Xi 50 controller has a total
power capability of 6 amps. The Cheetah Xi
1016 is expandable to 12 amps with the
addition of the 10-2474, Supplemental
Power Supply
Terminal blocks accept 12 – 24 AWG
(+, -, shld, -,
+)
• Power-limited and supervised
• Supports up to 50 addressable devices
(only those listed in this manual)
• Support Class B, Class A or Class X if
using isolator devices
• Maximum loop current draw: 50 mA @
28 VDC
• Typical circuit voltage will range from 24
VDC nominal to 0 – 5 VDC during data
communication pulse. It should never be
a constant 0 VDC
• FM Approved Deluge and Pre-action
Sprinkler operation requires that initiating
device circuits be Class A and wired to
FM Listed/Approved devices.
12,000 ft. (3657m) maximum wire length
from panel to last device using 14 AWG
Shielded cable should be used for
electrically noisy environments
Maximum resistance 70Ω (35Ω per leg)
Maximum capacitance 0.60uF
If using Class X wiring, the first and last
isolator device shall be mounted within
conduit, within the same room as the control
panel, and no more than 20 ft. (6.1m) from
the control panel
Terminal blocks accept 12 – 24 AWG
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