Notifier NFS-640 Installation Manual

Also see for NFS-640: Programming manual Manual Operation manual

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Notifier NFS-640 Installation Manual Manual pdf 39 page image

Installing the Control Panel InstallationNFS-640 Installation Manual P/N 51332:B1 12/01/2003 393.5.10 APS-6R Auxiliary Power Supply ConnectionsIf an optional APS-6R power supply is installed in the cabinet, connect it with no power applied;follow sequence of steps in Section 3.2 “Installation Checklist”, Table 2; this is Step 4. For allinformation pertaining to these connections see the APS-6R Instruction Manual.3.5.11 External DC Power Output ConnectionsTerminal TB7 provides two (2) power outputs, resettable and non-resettable. Each output is power-limited. Follow sequence of steps in Section 3.2 “Installation Checklist”, Table 2; this is part ofStep 6.Figure 15 Power Supply DC Outputs - TB724 VDC Resettable Power Circuit (Four-Wire Smoke Detectors). The power supplyprovides a single 24 VDC filtered, power-limited, resettable power circuit for devices that requireresettable power (such as four-wire smoke detectors). This circuit is power-limited, but must besupervised. To provide supervision, install a UL-listed end-of-line power supervision relay (such asthe A77-716B) after the last device. Connect the power supervision relay normally open contact inseries with an Initiating Device Circuit (IDC). The four-wire power circuit energizes the powersupervision relay. When you reset the system, the control panel removes power from theseterminals for approximately 15 seconds.Connect external field wires to the power supply terminals TB7 RESET(+)and(–) to provide up to1.25 A of current for powering four-wire smoke detectors. See Figure 15 above.24 VDC Non-resettable Power Circuit. The power supply provides one 24 VDC filtered,power-limited, non-resettable power output, capable of up to 1.25 A. Use this circuit to powerdevices that require low-noise 24 VDC power (such as annunciators or the TM-4).Connect external field wires to power supply terminals TB7 NONRST(+)and(–) to provide up to1.25 A of non-resettable current for powering external devices such as annunciators. See Figure 15above.+ – + –TB7Non-resettablePowernfs640-dcout.cdrResettablePower! CAUTION: During system reset, power remains at terminals TB7 NONRST(+)and(–).