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Where reference has been made above to the use of the PEFS-PL80S-11/PEFS-PL80S-21 as the source of supply of the
24VDC, it can also be considered that power can be supplied to the RSD units by an alternative suitably rated UL Approved
24VDC Class II power supply (AC/DC or DC/DC types). This power supply unit should be used in conjunction with a shutdown
initiator that ensures disconnection of the 24VDC supply upon operation, and for the PEFS-PL80S-11/PEFS-PL80S-21 the
appropriate in-line fuse must also be installed in the 24VDC line.As the supply of these parts are outside the scope of Projoy
we recommend that the device’s instructions of use are fully understood and the necessary appropriate precautions made
when using such parts; and that the correct 24V/0V polarity connections are made as indicated in this installation guide.
One RSD PEFS-PL80S-11/PEFS-PL80S-21 will control two solar panels and by series connection of the FireRaptor, multiple
solar panel pairs can be connected to form a greater capacity system. The diagram below illustrates a typical example of a
FireRaptor protected installation using eight solar panels and four PEFS-PL80S-11/PEFS-PL80S-21 FireRaptors.
MULTIPLE INSTALLATIONS
If it is found that the product cannot be output�
1) Please check whether the 24V power supply is normal. After the 24V power supply is restored, the product can output
normally.
5 Trouble shooting
www.projoy-electric.com
RSD PEFS-PL80S
N≤60
N≤60
String
DC 24V
Power out
3
