Altronix SMP5PM Installation Instructions
SMP5PM - Supervised Power Supply/Charger
Overview:
SMP5PM is a supervised power supply/charger that converts a low voltage AC input, into a 12VDC or 24VDC
selectable output, with 4 amp of continuous supply current (see specifications).
Specifications:
Input:
• 24VAC or 28VAC
(Voltage Output/Transformer Selection Table).
Output:
• 12VDC or 24VDC selectable output.
• 4 amp supply current.
• Filtered and electronically regulated outputs.
• Short circuit and thermal overload protection.
Battery Backup:
• Built-in charger for sealed lead acid or
gel type batteries.
• Maximum charge current 0.3 amp.
Voltage Output/Transformer Selection Table:
Output VDC Switch Position Max. Load DC Transformer Requirements
12VDC SW1 Closed 4 amp 24VAC or 28VAC / 100VA (T2428100)
24VDC SW1 Open 4 amp 24VAC or 28VAC / 175VA (T2428175)
Battery Backup (cont’d):
• Zero voltage drop when switching over
to battery backup.
Supervision:
• AC fail supervision (form “C” contacts).
• Low battery supervision (form “C” contacts).
Indicators:
• AC input and DC output LED indicators.
Board Dimensions (L x W x H) (approximate):
• 4.05” (102.87mm) x 7” (177.8mm) x 1.35” (34.29mm)
Note: Transformers with higher VA ratings may be used for all output voltages above as long as you
do not exceed 28VAC or 45VDC.
Installation Instructions:
The SMP5PM should be installed in accordance with The National Electrical Code
and all applicable Local Regulations.
1. Mount the SMP5PM board in desired location/enclosure.
2. Set the SMP5PM to desired DC output voltage via SW1 (Voltage Output/Transformer Selection Table).
3. Connect proper transformer to terminals marked [AC] (Voltage Output/Transformer Selection Table).
Use 18 AWG or larger for all power connections (Battery, DC output).
Use 22 AWG to 18 AWG for power limited circuits (AC Fail/Low Battery reporting).
4. Measure output voltage before connecting devices. This helps avoid potential damage.
5. Connect devices to be powered to terminals marked [ + DC -- ].
6. When the use of stand-by batteries are desired, they must be 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 24VDC operation.
Note: When batteries are not used a loss of AC will result in the loss of output voltage.
7. Connect appropriate signaling notification devices to AC Fail & Low battery supervisory
relay outputs marked [NC, C, NO].
LED Diagnostics:
Red (DC) Green (AC) Power Supply Status
ON ON Normal operating condition
ON OFF Loss of AC, Stand-by battery supplying power.
OFF ON No DC output.
Off Off Loss of AC, Discharged or no standby by battery. No DC output.
SMP5PM - 1 -
Terminal Identification:
+ BAT --- + DC ---
AC AC
DC
AC
12V - SW1 CLOSED
24V - SW1 OPEN
AC FAIL
LOW BAT
NC
C
NO
C
NC
NO
Terminal Legend Function/Description
Low voltage AC input (Voltage Output/Transformer Selection Table).
AC/AC
+ DC -- 12VDC/24VDC @ 4 amp continuous output.
AC FAIL
NC, C, NO
Low Battery
NC, C, NO
+ BAT - Stand-by battery connections. Maximum charge rate 0.3 amp.
For 12VDC output use 16VAC or higher with 85VA power rating or higher.
For 24VDC output use 28VAC with 140VA power rating or higher.
Caution: Do not apply voltages above 28VAC (28VAC is maximum input rating
Used to notify loss of AC power, e.g. connect to audible device or alarm
NC, C, NO panel. Relay normally energized when AC power is present.
Contact rating 1 amp @ 120VAC / 28VDC
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.
Maximum input
voltage not to
exceed 28VAC
Altronix is not responsible for any typographical errors. Product specifications are subject to change without notice.
140 58th Street, Brooklyn, New York 11220 USA, 718-567-8181, fax: 718-567-9056
website: www.altronix.com, e-mail: info@altronix.com, Made in U.S.A.
IISMP5PM - Rev. 090710 B09L
- 2 - SMP5PM
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