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SMP3CTX series
5. Connect devices to be powered:
a. For Power Supply Board connect to the terminals marked [– DC +].
b. For Power Distribution Module(s) connect devices to be powered to the terminal pairs 1 to 4 marked
[1P & 1N] through [4P & 4N] (Fig. 2, pg. 3), 1 to 8 marked [1P & 1N] through [8P & 8N] (Fig. 3, pg. 3), or 1 to 16
marked [1P & 1N] through [16P & 16N] (Fig. 4, pg. 3), carefully observing correct polarity.
*Note: Power switch is used to disconnect the L (HOT) terminal from the rest of the board (Fig. 1a, pg. 3).
When servicing the unit, AC mains should be removed.
6. When using stand-by batteries, they must be lead acid or gel type. Connect battery to the terminals marked [– BAT +]
(battery leads included).
12VDC operation: Use one (1) 12VDC battery.
24VDC operation: Use two (2) 12VDC batteries connected in series.
Note: When batteries are not used, a loss of AC will result in the loss of output voltage.
For supervised models only:
7. Connect appropriate signaling notification devices to AC Fail & Low Bat supervisory relay outputs
marked [NC, C, NO] (Fig. 1b, pg. 3).
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.
Terminal Identification:
Power Supply Board:
Terminal Legend Function/Description
L, G, N
Connect 115VAC/230VAC to these terminals: L to Hot, N to Neutral.
– DC +
12VDC / 24VDC @ 2.5 amp continuous output.
*AC FAIL
NC, C, NO
Used to notify loss of AC power, e.g. connect to audible device or alarm panel. Relay normally
energized when AC power is present. Contact rating 1 amp @ 120VAC / 28VDC.
*Low Battery
NC, C, NO
Used to indicate low battery condition, e.g. connect to alarm panel. 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.
– BAT +
Stand-by battery connections. Maximum charge rate 0.5 amp.
*Note: Supervised models only
PD4/PD4CB/PD8/PD8CB/PD16W/PD16WCB - Power Distribution Module:
Terminal Legend
Function/ Description
PD4/PD4CB PD8/PD8CB
PD16W/PD16WCB
1P to 4P
1P to 8P
1P to16P
Positive DC power outputs.
1N to 4N
1N to 8N
1N to 16N
Negative DC power outputs.
