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Main Supply Circuit
The AC terminals are located in the upper left hand portion of the main board. The main board supervises the main AC power and
provides indication that the AC power is absent. The terminals are rated at 120/240 VAC 50/60 Hz and are labeled "AC POWER"
on the board.
Figure 5. VFR-500 AC Terminals
N L
The earth ground connection is marked as "
connections.
The AC input power rating is: Maximum of 3.0A at the nominal 120/240V VAC rating.
Battery Connections
The battery charging circuit is located on the main panel in the lower left portion of the board. The battery charging current is 1.0
amp typical; the charging voltage is approximately 27.3 VDC and is supervised.
Note: The battery should be clearly labeled as "Sealed Lead Acid Battery" or equivalent UL listed or UL Recognized.
Connect the battery wire leads to the terminal connections, as shown, observing proper polarity
Figure 6. VFR-500 Battery Connections
-
+
12 V
Battery
VFR-500 • 5403789 • REV A • 10/23
" and is separate from the two terminals for Line (L) and Neutral (N)
Panel
Connections
-
+
BATTERY
+
-
12 V
Battery
DWG # 593-5
2-13
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