Altronix SMP7PM Installation Instructions - Manual

Overview:
The SMP7PM is a supervised power supply that will convert a low voltage AC input, into 12VDC or 24VDC output,
with a 6 amp continuous supply current.
Voltage Output/Transformer Selection Table:
Output VDC Switch Position Max. Load DC TransformerRequirements
(Recommended Altronix Part #’s)
12VDC SW1 Closed 6 amp 24VAC or 28VAC / 175VA (T2428175)
24VDC SW1 Open 6 amp 24VAC or 28VAC / 175VA (T2428175)
Installation Instructions:
The SMP7PM should be installed in accordance with The National Electrical Code and all applicable Local Regulations.
1. Mount the SMP7PM in desired location/enclosure.
2. Set the SMP7PM to the desired DC output voltage by setting the switches (Fig. 1a, pg. 2) to the
appropriate positions (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).
Keep power limited wiring separate from non-power limited wiring (115VAC / 60Hz Input, Battery Wires).
Minimum .25” spacing must be provided.
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 trouble reporting devices to AC Fail & Low battery supervisory
relay outputs marked [NC, C, NO]. Use 22 AWG to 18 AWG for AC Fail / Low Battery reporting.
AC Failure will report in 5 minutes. For a 6 hour delay on reporting cut resistor R1.
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 stand-by battery. No DC output
SMP7PM
Supervised Power Supply/Charger
Rev. 061603
Input:
• Input 28VAC
(Voltage Output/Transformer Selection Table).
Output:
• 12VDC or 24VDC selectable output.
• 6 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 0.7 amp.
Battery Backup (cont’d):
• Zero voltage drop when switching over
to battery backup.
Supervision:
• AC fail supervision (form “C” contacts).
• Battery presence and low battery supervision
(form “C” contacts).
Indicators:
• AC input and DC output LED indicators.
Board Dimensions (L x W x H) (approximate) :
4.266” (108.36mm) x 7.045” (178.95mm)
x 2.127” (54.05mm)
Specifications: