Tyco SafeLINC 4100U Manual Do Utilizador

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2-7
 
 
In the USA, a number of variants of power supply are available, e.g. SPS, RPS, XPS, 
XCharger each with different portions of circuitry (eg  NACs, Battery Charger, IDNet) 
fitted or not fitted.  In Australia, only one variant (SPS) is currently available, and it has 
hardware and software that are specific to Australia.  This unit is used as the main power 
supply, but may also be fitted directly to a card bay as an expansion supply.   
 
The system power supply (SPS) 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 detect, 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.  
 
 
 
 
 
 
 
 
 
 
 
Figure 2-4.  System Power Supply 
 
 
Continued on next page 
Introduction to FACPs (4100U), 
Continued
 
System Power 
Supply (SPS) 
CITY / RELAY CARD  
MOUNTING AREA 
CITY CARD
CONNECTOR (P7)
AUXILIARY RELAY
TERMINAL BLOCK
(TB4)
AUXILIARY POWER
TERMINAL BLOCK
(TB3)
AC  
CONNECTOR 
(under board) 
BATTERY 
CONNECTORS: 
P4 
P5 
POWER/COMM TO 
CPU 
MOTHERBOARD 
(P8) 
DEVICE ADDRESS 
SWITCH (SW1)
IDNET SHIELD JUMPER
(P2)
CITY/RELAY CARD
TROUBLE INDICATION
JUMPER (P3)
EARTH 
FAULT 
MONITOR 
JUMPER (P1)
NAC TERMINAL BLOCK  (TB2) 
IDNET TERMINAL BLOCK  (TB1) 
POWER/COMM TO 
NEXT PDI (P6)