Tyco 4100U-S1 - Manual (Page 24)

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The operator interface lets a user operate the panel. It provides alarm, fault, and isolate
status alerts, and lets the user review historical logs and perform diagnostics.
Figure 2-3. Operator Interface
4100-6014 Modular Network Interface Card (NIC). A daughter card that mounts to the
CPU motherboard. Performs 4100 networking operations. May be installed with 4100-
6056 Wired Media Cards and/or the 4100-6057 Fiber Media Cards.
The 4100U-S1 is powered by the SPS (System Power Supply), which gets its primary
power from the AC mains and its secondary power from the backup batteries.
The SPS in the 4100U-S1 has hardware and software that are specific to Australian
requirements.
The system power supply is mains powered and has backup batteries that get switched in
on mains failure. It is the initial power source for the CPU and the host cabinet. The SPS
provides 24V card power to the CPU motherboard and the other cards. It also supplies
24V power on a separate bus to the outputs, e.g. Notification Appliance Circuits (NACs).
The SPS also has three on-board NACs that support reverse polarity supervision. It
provides an IDNet channel, auxiliary power, an auxiliary relay, and it mounts and drives
the Alarm Relay Card.
The SPS performs functions such as brownout detection, battery transfer, battery
recharge, earth fault detection, and power limiting of outputs. It provides voltage and
current information to the CPU card, which can then be displayed at the user interface.
The 24VDC bulk power on the SPS is unregulated, and is divided into three feeds: 24V
Card, 24V Signal, and 24V Aux Power. 24V Card, which supplies the cards, and Aux
Power, which is accessible on screw terminals, are each rated at 2A and protected by a
PTC. The 27.3V regulated battery charger is powered from the bulk supply and is
switched off during alarm. The charger has two programmable options of rating: 1.4A for
6-18Ahr batteries, and 3.3A for batteries above 18Ahr.
The “heavy” 24V Signal feed is only accessible via the NACs on the SPS.
Continued on next page
Introduction to 4100U-S1 Cabinet, Continued
Operator Interface
Additional CPU
Motherboard
Modules
System Power
Supply (SPS)