System Overview System Components14 NFS-640 Installation Manual P/N 51332:B1 12/01/20032.2.4 Circuit Board ComponentsThe following two figures illustrate the location of the various connections, switches, jumpers andLEDs on the circuit board. Figure 3 shows wiring connections. Figure 4 shows jumpers, LEDs andswitches. See Section 3 “Installation” for more details.Figure 3 Circuit Board Components: Wiring ConnectionsNO NO NO NONC NC NC NCC C C C+ - + - + - + - + - TX RX REF TX RX REF B+ A+ B- A-EARTH NTRL HOTBATT+ BATT- B+ B- A+ A- B+ B- A+ A- B+ B- A+ A- B+ B- A+ A-J3 - LEM-320Connector(SLC Loop #2)J5 - Panel Circuits (supervised)J6 - Panel Circuits (supervised)J10 - Security Tamper SwitchJ11 - Auxiliary Trouble InputJ4 - KDM-2ConnectionTB1 - Battery Connection(over-current protected)TB6 - NAC#1TB5 - NAC#2TB4 - NAC#3TB3 - NAC#410 Amp Slo-Blow FuseP/N 12067J7 - Accessory Power ConnectionTB2 - AC Power Connectionnfs640-board2.cdrAll NAC Circuits: power-limited, supervisedTB16 - SLC #1 Connections (Detectors,Modules) (supervised)TB15 - EIA-232 PC Terminal ConnectionJ1 - Network/Service Connection (NUP)(power-limited, supervised)TB14 - EIA-232 Printer ConnectionTB12 - EIA-485 Terminal Mode Connection (supervised)TB13 - EIA-485 ACS Mode Connection (supervised)TB7 - DC Power (24 VDC power-limited, non-resettable)TB7 - DC Power (24 VDC power-limited, resettable)J8 - Zone Code InputTB8 - Alarm RelayTB9 - Trouble RelayTB10 - Supervisory RelayTB11 - Security RelaySee Section 3.5.13 “Output RelayConnections” for details.
