Altronix SMP7 Power Supply Charger Installation Guide
- June 4, 2024
- Altronix
Table of Contents
SMP7 Power Supply Charger
Installation Guide
Overview:
Altronix SMP7 power supply/charger converts a low voltage AC input into 12VDC or 24VDC output with a 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.
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 107.9mm x 31.75mm).
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:
SMP7 should be installed in accordance with The National Electrical Code and all applicable Local Regulations.
-
Mount SMP7 in the desired location/enclosure (mounting hardware included).
-
Set SMP7 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. -
Connect the 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 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 inside.
Refer installation and servicing to qualified service personnel. -
Measure output voltage before connecting devices. This helps avoid potential damage.
-
Connect devices to be powered to terminals marked [– DC +].
-
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 for 24VDC operation.
Note: When batteries are not used, a loss of AC will result in the loss of output voltage.
LED Diagnostics:
| Red (DC) | Green (AC) | Power Supply Status |
|---|---|---|
| ON | ON | Normal operating condition. |
| ON | OFF | Loss of AC. The stand-by battery is supplying power. |
| OFF | ON | No DC output. |
| OFF | OFF | Loss of AC. Discharged or no stand-by battery. No DC output. |
Terminal Identification:
| Terminal Legend | Function/Description |
|---|---|
| AC/AC | Low voltage AC input (24VAC or 28VAC / 175VA). |
| – DC + | 12VDC / 24VDC @ 6A continuous output. |
| – 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: info@altronix.com
Lifetime Warranty
IISMP7 – Rev. 110606
H17U
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