Satel APS-412, Manual, Page: 5 / 11

SATEL APS-412 3
2. Description of the power supply
Explanations for Fig. 1:
F1 fuse (T 3.15 A)
– AC circuit protection.
LEDs indicating status of the power supply:
– red LED – power output status:
OFF
– OK (current consumption below 4 A),
flashing
– overload (current consumption above 4 A).
– yellow LED – battery status:
ON
– battery OK (or the battery testing mode disabled),
flashing
– low battery (battery voltage below 11.5 V),
OFF
– no battery or blown F3 fuse.
– green LED – AC power status:
ON
– AC power OK,
flashing
– no AC power or blown F1 fuse.
2.1 Electronics board
Description of terminals:
L
– terminal for connecting phase conductor.
N
– terminal for connecting neutral conductor.
PE
– terminal for connecting protective conductor.
+12V
– +12 VDC power output.
COM
– common ground.
WS
– OC type output signaling 230 VAC power loss.