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SMP3CTX220 Series Installation Guide
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:
Terminal Legend
Function/Description
L, G, N
Connect 115VAC/230VAC to these terminals: L to Hot, N to Neutral.
– DC +
12VDC / 24VDC @ 2.5A continuous output.
*AC FAIL
NC, C, NO
SMP3PMCTX220 only
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 1A @ 120VAC / 28VDC.
*Low Battery
NC, C, NO
SMP3PMCTX220 only
Used to indicate low battery condition, e.g. connect to alarm panel. Relay normally
energized when DC power is present. Contact rating 1A @ 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 0.5A.
