Using the EF-Series Unit
2-18 Rev 2/01
As described in sections 2.5.3.1 and 2.5.3.2, connect the batteries (if used) to the “+BAT” and “BAT-”
terminals. Connect the charging source (normally a solar panel) to the “+CHG” and “CHG-”
terminals. Make sure the hook-up polarity is correct.
NOTE
If you are connecting a solar panel that has its own regulator, connect the panel
instead to the +BAT and BAT- terminals.
2.5.3.1 Battery Connections
The battery connections are on the removable terminal block labeled POWER. Refer to Figure 2-4.
These connections provide the input power for the electronics and are also the output of the charge
regulation circuitry. A single 12-volt, sealed, lead-acid battery or multiple batteries wired in parallel
are connected to these terminals, which are labeled “+BAT” for battery positive and “BAT-” for battery
negative.
CAUTION
The maximum voltage that can be applied to the “BAT” terminals without damage
to the electronics is 15 volts dc.
The EF-Series unit enclosure can hold up to four sealed lead-acid batteries; see Section 1.7.5 for
recommended battery types. The 12-volt batteries can be installed to give 7, 14, 21, or 28 amp-hours
of backup capacity.
The batteries are mounted under the electronics swing-out mounting panel and are retained by the
panel when it is secured. The batteries are connected to a harness that allows the batteries to be
changed without removing power from the unit. Make sure that the black wires of the harness are
connected to the negative terminals of the batteries and that the red wires are connected to the positive
terminals. Input wiring is connected at the POWER wiring terminal connector.
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