Samlex America SCC-30AB - Manuel (Page 41)

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6
InstallatIon & operatIon
3. The connections to the SCC-30AB terminals are shown in the drawing at Fig. 6.2.
A barrier type of Terminal Strip has been provided for connecting the PV array and
the battery. M-4 screws with clamping washers are used to make the connection.
A flat or a #2 Philips head screw driver may be used to tighten these screws.
Tighten each terminal clamping screw to 20 inch-pounds of torque. The distance
between the barriers is 9 mm and a standard Spade Type of terminal lug meant for
#8 Stud and AWG #10 – AWG #12 wire may be used at the end of the wires to be
connected to these terminals. 4 such terminal lugs are provided with the unit for
ease of installation.
4. Set DIP Switch 1 for the voltage system, set DIP Switches 2, 3, 4 for battery type
and charging algorithm (see Table 6.1).
5. Connect the BATTERY first. Be careful that bare wires do not touch the metal case
of the controller. Connect battery Negative first and then the battery Positive.
Use 32V, 35A fuse in series with the Positive battery wire to protect against fire
hazard due to overheating/burning of battery wires due to short circuit along
the length of wiring between the battery and the controller. The fuse should be
located within 7” of the battery Positive post.
The BATTERY must be connected before the Solar Panel / Array to properly start
the microcontroller, activate protections & guide installation.
A battery below 9V for 12V battery or 18V for 24V battery may not start the
microcontroller properly. Make sure the battery is charged before installing
the system.
Fig. 6.2. Installation Diagram
BTS+
BTS-
PV+
PV-
BAT+
BAT-
SCC-30AB
Solar Panel/Array
+
–
32V, 35A Fuse
(within 7” of
battery + terminal
)
Battery Temperature Sensor
DC-BTS-A-C (optional)
+ –
DC Circuit Breaker
or Disconnect Switch
- Voltage: ≥ 50 VDC
- Current: 1.56 times
I
sc
of Panel/
Array