Altronix SMP5 Manual

SMP5 power supply/charger converts low voltage AC input into 6VDC, 12VDC or 24VDC @ 4A of continuous
supply current (see specifications). This general purpose power supply has a wide range of applications for access
control, security and CCTV system accessories that require additional power.
Input:
• 16VAC to 28VAC

(Voltage Output/Transformer Selection Table).

Output:
• 6VDC, 12VDC or 24VDC selectable output.
• 4A 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 0.3A.
* Specified at 25˚C ambient.
Switch Position
Output
Voltage
SW1
6VDC ON
12VDC OFF
24VDC OFF
Note: Transformers with higher power (VA) ratings may be used for all output voltages selected above
provided the input voltage does not exceed 28VAC or 45VDC.
SMP5 should be installed in accordance with The National Electrical Code and all applicable Local Regulations.
1. Mount SMP5 board in the desired location/enclosure.
2. Set DC output voltage with switches (Voltage Output/Transformer Selection Table).
3. Connect a proper transformer to the terminals marked [AC] (Voltage Output/Transformer Selection Table).
Use 18 AWG or larger for all power connections (Battery, DC output).
4. Measure output voltage before connecting devices. This helps avoiding potential damage.
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.
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 battery to the terminals marked [+ BAT --- ] (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.
SMP5
Power Supply/Charger
Voltage Output/Transformer Selection Table:
Transformer Requirements
(Recommended Altronix Part #'s)
SW2
OFF 16VAC / 40VA (TP1640)
OFF 24VAC or 28VAC / 100VA (T2428100), or 16VAC / 100 VA (T16100)
ON 28VAC / 175VA (T2428175)

Installation Instructions:

Overview:

Specifications:

Battery Backup (cont'd):
• Zero voltage drop when switching over to
battery backup.
Visual Indicators:
• AC input and DC output LED indicators.
Features:
• Extremely compact design.
• Includes battery leads.
• Snap Trac compatible
(order Altronix model number ST3).
Board Dimensions (W x L x H approx.):
3" x 3.5" x 2" (76.2mm x 88.9mm x 50.8mm)