Power Products SOLAR BOOST 3048, Инструкция по установке и эксплуатации

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Installation and Operation Manual
16
OPTIONAL EXTERNAL CURRENT SHUNT
As described in the Float Transition Current Measurement Shunt and Float Transition Current Setpoint sections,
charge control is enhanced through the use of an external current shunt. If used, the external shunt should be installed
in the battery negative cable and connected to Solar Boost 3048 as shown in Figure 3 so that it measures net battery
current only. With net positive charge current going to the battery, the signal polarity on the battery shunt terminal block
must be
+
/
−
as shown in Figure 3. This can be verified by measuring the voltage on test points “I Bat” with respect to
“Com”. The voltage should be positive with net positive charge current flowing, scaled appropriately for the shunt
installed. Use twisted pair cable 18-22 AWG for shunt signal wires.
Shunt polarity must be correct for the charge
control system to operate properly.
----
Make no connection to the Battery Shunt
terminal block if the external shunt is not used.
OPTIONAL DIGITAL DISPLAY
The digital display connects to the main circuit board connector as shown in Figure 3. Cabling uses standard RJ-
45 8-pin connectors, wired as shown in Figure 5. Non twisted pair cable is typically suitable for lengths up to 40ft/12.2m.
Longer lengths should use standard Category 5 computer network cable, wired pin to pin with no swap. Typical
Category 5 unshielded twisted pair (UTP) cable wiring used for the remote display is shown in Figure 5. With a
Category 5 UTP cable, up to 300ft/91.4m of cable may be used. Longer lengths are possible and can be evaluated on
an individual basis. The remote display mounts into a standard duplex wall mount box.
A digital display may also be mounted in the controller unit (SB3048D or SB3048PD). If this is the case, the front
panel display plugs into the Digital Display connector shown in Figure 3, and the remote display cable plugs into the
spare receptacle on the front panel digital display. The two receptacles on the digital display are internally wired in
parallel.
REMOTE DISPLAY CABLE SCHEMATIC
FIGURE 5
INPUT POWER SOURCES OTHER THAN PV MODULES
Since Solar Boost 3048 is a high efficiency series pass “buck” type power converter with current limit, the
battery can be charged from virtually any power source with a voltage greater than the acceptance voltage setpoint,
and less than the maximum PV open circuit voltage rating of 127 volts. Examples of this type of charge control
include hydroelectric or wind generators, or charging a 24 volt battery from a 48 volt electrical system. Whether a
particular input power source will operate properly depends on two criteria. These are;