Power With External Power Source - ABB RMC-100 User Manual

a. Verify the solar panel's polarity and output voltage with a digital voltmeter. Voltage varies
depending on the amount of sun and angle to sun.
b. Continue with the installation if the measured output voltage is within the manufacturer's
specification, per the specification sheet supplied with the panel.
c. Call the ABB main office number on the last page of the manual if the measured voltage is
out of specification.
2. Pry the CHARGER/EXT PWR port removable terminal connector off the electronic board with a
slotted screwdriver.
3. Trim back the covering on the end of the charger cable that connects to the controller ¼ inch
(0.635 cm) on each wire.
4. Loosen the terminal connector screws.
5. Insert the wires in the required pins. Observe the polarity (+ and -).
6. Insert the wired terminal connector back into the CHARGER/EXT PWR port
Figure 3-15: Connect the charger (solar panel)
12Vdc
Battery
BAT CHARGER/EXT PWR
Continue to section 3.8, Enable lithium battery backup, to continue the installation.
3.7.3

Power with external power source

The controller can receive power from an external power supply (9 to 30 Vdc). Remove the
CHARGER/EXT PWR terminal connector to wire the power cable before connecting the power supply to
the board.
WARNING – Bodily injury. To prevent injury only permit a licensed electrician to install Vac
wiring.
IMPORTANT NOTE: The external power supply must meet the specifications in section 3.1.3.
All wiring must comply with national and local electrical codes and applicable ABB certification
drawings to maintain system certification.
NOTICE – Equipment damage. A battery cannot be used when the controller is in EXT
PWR mode.
To wire an external power source to the RMC:
1. Follow the manufacturer's instructions supplied with the external power supply to install and
connect the power source.
2. Pry the CHARGER/EXT PWR port removable terminal connector off the electronic board with a
slotted screwdriver.
3. Trim back the covering on the end of the power cable that connects to the controller ¼ inch
(0.635 cm) on each wire.
4. Loosen the terminal connector screws.
5. Insert the wires in the required pins. Observe the polarity (+ and -).
6. Insert the wired terminal connector back into the CHARGER/EXT port
4 4 | R MC-1 00 | 2 10 55 5 2MN A E
(Figure 3-15).
Solar
panel
(Figure 3-16).