NAPCO NP-P7ASUP Installation Instructions Manual

Contents

installation instructions

NAPCO NP-P7ASUP Installation Instructions Manual Manual pdf 1 page image

DESCRIPTIONThe NP-P7ASUP is both a charger and a supervised powerlimited supply that converts a low voltage AC input into a12VDC or 24VDC power limited output, with 7A of continu-ous supply current.FEATURES• 12VDC or 24VDC selectable output.• Maximum charge current .5 amps.• 7 amps continuous supply current at 12VDC-24VDC.• Filtered and electronically regulated outputs.• Built-in charger for sealed lead acid or gel type batteries.• Automatic switch over to stand-by battery when AC fails(zero voltage drop).• AC input and DC output LED indicators.• AC fail supervision (form "C" contacts).• Low battery supervision (form "C" contacts).• Short circuit and thermal overload protection.• Includes battery leads.• Board Dimensions:179.3mm(L) x 108.7mm(W) x 50mm(H)Specified at 25° C ambient.INSTALLATION INSTRUCTIONSThe NP-P7ASUP should be installed in accordance with TheNational Electrical Code and all applicable Local Regulations.1. Mount the NP-P7ASUP in desired location.2. Set the NP-P7ASUP to desired DC output voltage via SW1(see voltage output/transformer selection table).3. Connect proper transformer to terminals marked [AC] (seevoltage output/transformer selection table).Use 18 AWG or larger for all power connections (Battery, DCoutput).Use 22 AWG to 18 AWG for power limited circuits (AC Fail/Low Battery reporting).4. Connect devices to be powered to terminals marked [+ DC -].Note: It is important to measure output voltage before con-necting devices. This helps avoid potential damage.5. When the use of stand-by batteries are desired, they mustbe lead acid or gel type.Connect battery to terminals marked [+ BAT -] on the board(battery leads included).Use two (2) 12VDC batteries connected in series for 24VDCoperation.Note: When batteries are not used, a loss of AC will result inthe loss of output voltage.6. Connect appropriate signaling notification devices to AC Fail& Low battery supervisory relay outputs marked [N.C., C, N.O.].R333 Bayview AvenueAmityville, New York 11701For Sales and Repairs, (800) 645-9445For Technical Service, (800) 645-9440NP-P7ASUP7 AMP SUPERVISEDPOWER SUPPLY / CHARGERWI1341B 12/05© NAPCO 2005Red(DC)Green(AC)Power Supply StatusON ON Normal operating condition.ON OFF Loss of AC, Stand-by battery supplying power.OFF ON No DC output.OFF OFF No DC output. Loss of AC. Discharged or no battery.LED DIAGNOSTICSVOLTAGE OUTPUT/TRANSFORMER SELECTION TABLEOutputVDCSwitchPositionTransformerRequirements12VDC @ 7 Ampscontinuous supply current1. ON2. OFFNP-TRF2817524VDC @ 7 Ampscontinuous supply current1. ON2. ONNP-TRF28300Note: Transformers with higher VA ratings may be used for all outputvoltages above as long as you do not exceed 28VAC.TERMINAL IDENTIFICATIONTerminalLegendFunction/DescriptionAC/AC Low voltage AC input (see voltage output/transformer selection table).For 12VDC output use 28VAC or higher with 175VA power rating or higher.For 24VDC output use 28VAC with 300VA power rating or higher.Caution: Do not apply voltages above 28VAC (28VAC is maximum input rating)+ DC - 12VDC/24VDC @ 7 amps continuous power limited output.AC FAILN.C., C, N.O.Used to notify loss of AC power, e.g. connect to audible device or alarmNC, C, NO panel. Relay normally energized when AC power is present.Contact rating 1 amp @ 120VAC / 28VDCLow BatteryN.C., C, N.O.Used to indicate low battery condition, e.g. connect to alarm panel.NC, NO, C Relay normally energized when DC power is present.Contact rating 1 amp @ 120VAC / 28VDC.Low battery threshold:12VDC output threshold set @ approximately 10.5VDC,24VDC output threshold set @ approximately 21VDC.+ BAT - Stand-by battery connections. Maximum charge rate .5 amp.

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