2 NFS2-640 UL Listing Document — P/N 52741LD:H9 5/19/2022
TB6 thru TB9 NAC Circuits
• Nominal Operating Voltage: 24 VDC Regulated
• Maximum Current: 1.5A (See Note 1)
• End-Of-Line Resistors: 2.2 K 1/2 W (ELR-2.2K)
• Wiring Configuration: Class B or Class A
• Ground Fault Impedance: 0 ohms
• Maximum Line Impedance: 20 ohms
• Supervised return
• Power-limited (Class 2)
TB10 DC Power
• Nominal Voltage: 24 VDC, Regulated
• Maximum Current: 1.25 A DC, 1.5 A max for special applications (See Note 1)
• Maximum Ripple Voltage: 176 mVrms
• Class B wiring. Supervise with a power supervision relay EOLR-1
• Ground Fault Impedance: 0 ohms
• Supervised
• Supported by battery backup during AC power loss
• Power-limited (Class 2)
• Resettable and Non-resettable power available.
TB11 EIA-485 Terminal Mode & ACS Mode
Connection
• Characteristic. Impedance: 120 ohms
• Supervised
• Power Limited (Class 2)
TB12 EIA-232 Printer/PC/CRT (Terminal)
Connection
• Power Limited (Class 2)
• Not Supervised
• Equipment must be located in the same room within 20 feet of the panel with cables
encased in conduit.
TB13 SLC Loop (#1)
• Voltage: 24 VDC nominal voltage, 27.6 VDC maximum voltage
• Maximum Current: 200 mA average (short circuit will shut down the circuit until the short
is fixed)
• Wiring Configuration: Class A or B
• Maximum Length: 12,500 ft (3810 m) total loop length (NFPA Class A and B)
• Maximum Resistance: 50 ohms Class A or B
• Device Capacity (per loop): 01- 159 Intelligent Detectors, 01 -159 Monitor/Control
Modules
• Maximum Capacitance: 0.5 µf for all SLC wiring
• Ground Fault Impedance: 0 ohms
• Supervised
• Power-limited (Class 2)
• Second loop available with the addition of the LEM-320 (See J4)
J1 Network/Service Connection (NUP)
• Power Limited (Class 2)
• Supervised
J2 USB A - VeriFire Tools Connection
• USB connection for VeriFire Tools communication to the panel (Mini AB)
J3 USB B - VeriFire Tools Connection
• USB connection for VeriFire Tools communication to the panel (Standard B)
J4 LEM-320 Connector (for SLC #2)
• Connection for the addition of an LEM-320 loop extension board
J5 Security Tamper Switch
• Connection for a Security Tamper Switch (STS-1)
J6 Auxiliary Trouble Input
• Trouble monitoring connection for auxiliary equipment
J7 KDM-R2 Connection
• Connection for the addition of the KDM-R2 display
J8 Zone Coder Connection
• Connection for the UZC-256 Zone Coder
Notes:
1. Total current drawn from the power supply by TB2, TB6 through TB9 and TB10 cannot exceed 3.0 A in standby or 6.0 A in an alarm condition. The
Control Panel provides a total of 4.4 A of power in standby and 7.4 A of power in alarm to be shared by all internal circuitry and external provisions
(24 V resettable and non-resettable).
2. Refer to the NOTIFIER® Device Compatibility Document for a list of Notification Appliance Circuits and Releasing Circuits. Refer to the SLC
Signaling Line Circuit Manual for a list of other devices compatible with this FACP.
3. Refer to the Section , “NOTIFIER Compatible Equipment” for a list of external accessories that is compatible with the NFS2-640
Terminal Block/
Connector
Description Specifications
Table 1 CPU2-640 Wiring Connections (2 of 2)
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