Altronix SMP7PM Supervised Power Supply Installation Guide

SMP7PM Supervised Power Supply
Installation Guide

Overview:

Altronix SMP7PM is a supervised power supply that converts a low-voltage AC input into 12VDC or 24VDC output with 6A continuous supply current.

Specifications:

Input:

• Input 28VAC (Voltage Output/Transformer Selection Table).

Output:

• 12VDC or 24VDC selectable output.
• 6A supply current.
• The output fuse is rated 15A/32V.
• Filtered and electronically regulated outputs.
• Short circuit and thermal overload protection.

Supervision:

• AC fails supervision (form “C” contacts).
• Battery presence and low battery supervision (form “C” contacts).

Battery Backup:

• Built-in charger for sealed lead acid or gel-type batteries.
• Maximum charge current 0.7A.
• Zero voltage drop when switching over to battery backup.

Indicators:

• AC input and DC output LED indicators.
  Board Dimensions (W x L x H approximate):
  7” x 4.25” x 1.25” (177.8mm x 108mm x 31.8mm).
• Specified at 25˚C ambient.

Voltage Output/Transformer Selection Table:

Output VDC| Switch Position| Max. Load DC| Transformer Requirements
(Recommended Altronix Part #’s)
---|---|---|---
12VDC| SW1 ON| 6A| 24VAC or 28VAC / 175VA (T2428175)
24VDC| SW1 OFF| 6A| 24VAC or 28VAC / 175VA (T2428175)

Installation Instructions

SMP7PM should be installed in accordance with The National Electrical Code and all applicable Local Regulations.

1. Mount SMP7PM in the desired location/enclosure (mounting hardware included).

2. Set SMP7PM to the desired DC output voltage by setting the SW1 switch (Fig. 1a, pg. 2) to the appropriate position (Voltage Output/Transformer Selection Table). Adjust output voltage by using the trimpot on the power supply board (Fig. 1a, pg. 2) prior to connecting devices.

3. Connect the proper transformer to the 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 0.25” spacing must be provided.
   CAUTION: Do not touch exposed metal parts.
   Shut branch circuit power before installing or servicing equipment.
   There are no user-serviceable parts on the board.
   Refer installation and servicing to qualified service personnel.

4. Measure output voltage before connecting devices. This helps avoid potential damage.

5. Connect devices to be powered to the terminals marked [– DC +].

6. When the use of stand-by batteries is desired, they must be lead acid or gel type. Connect the battery to the terminals marked [– BAT +] on the board (battery leads included). Use two (2) 12VDC  batteries connected in series for24VDC 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 J1.
   

LED Diagnostics

Terminal Identification:

AC FAIL
NC, C, NO| Used to notify loss of AC power, (e.g. connect to audible device or alarm panel).
The relay is normally energized when AC power is present. Contact rating 1A @ 28VDC.
Low Battery
NC, C, NO| Used to indicate low battery condition, (e.g. connect to alarm panel).
The relay is normally energized when DC power is present. Contact rating 1A CO 28VDC
— BAT +| Stand-by battery connections. Maximum charge rate 0.7A.

Altronix is not responsible for any typographical errors.
140 58th Street, Brooklyn, New York 11220 USA | phone: 718-567-8181 | fax: 718-567-9056
website: www.altronix.com | e-mail: [email protected] | Lifetime Warranty
IISMP7PM Rev. 061603
H18U

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