INSTALLATION—SYSTEM INPUTS
15
DC Power Supply — Photo Eyes
Connect the 24 VDC power supply for the photo eyes to
the control panel as shown on the schematic that was
shipped with the door.
NOTE: Reference the electrical schematic that
was provided inside the System 4 control
panel. The instructions in this manual per-
tain to most doors; however, your door
may have different requirements.
The DC power +24 and –24 VDC (GND)
can be found at various locations through-
out the System 4 control board. For exam-
ple, the front set of photo eyes is
connected to terminal block X22. The +24
VDC is on terminal 220, the –24 VDC is on
terminal 223, and the signal wire connects
to terminal 222.
The rear set of photo eyes is connected to
terminal block X23. The +24 VDC is on ter-
minal 230, the –24 VDC is on terminal
234, and the signal wire connects to termi-
nal 232.
NOTE: The photo eye power supply is a dedicated
power supply for the photo eyes. Each set
of photo eyes should be connected to the
specific power supply for that particular set
of photo eyes. NO other electrical devices
should be connected to the photo eye
power supplies.
DC Power Supply — Auxiliary Device
Connect the 24 VDC power supply for an auxiliary
device (such as a motion detector) to the control panel
as shown on the schematic that was shipped with the
door.
NOTE: Reference the electrical schematic that
was provided inside the System 4 control
panel. The instructions in this manual per-
tain to most doors; however, your door
may have different requirements.
The DC power +24 and –24 VDC (GND)
can be found at various locations through-
out the System 4 control board. For exam-
ple, terminals 200, 210, 220, 230, 270,
277, and 290 on the microcontroller board
are all access points for +24 VDC connec-
tion(s).
The front set of photo eyes is connected to
terminal block X22. The +24 VDC is on ter-
minal 220 and the –24 VDC is on terminal
223, and the signal wire connects to termi-
nal 222.
The rear set of photo eyes is connected to
terminal block X23. The +24 VDC is on ter-
minal 230, the –24 VDC is on terminal
234, and the signal wire connects to termi-
nal 232.
NOTE: The photo eye power supply is a dedicated
power supply for the photo eyes. Each set
of photo eyes should be connected to the
specific power supply for that particular set
of photo eyes. NO other electrical devices
should be connected to the photo eye
power supplies.
Reversing Edge
Anytime the door is closing and the reversing edge (bot-
tom edge) of the door makes contact with an object, the
door will reverse direction and move to the open posi-
tion. The door will remain in the open position until the
control system is manually reset.
To ensure the reversing edge wiring has continuity, the
control system monitors a resistor installed on the pres-
sure switch located in the bottom bar. If the control sys-
tem does not detect the correct resistance, the control
system will not allow the door to close.
NOTE: The reversing edge signal is carried on the
pink wire in the encoder cable. The pink
wire is attached to terminal 272 on termi-
nal block X27.
The reversing edge wires are connected
to the Rytec Ry-Wi mobile unit installed in
the bottom bar. If you remove the Ry-Wi
cover you will find the reversing edge con-
nections on terminals 1 and 2 of the
mobile unit. A resistance check performed
on these two terminals should read 8,200
ohms or 8.2K ohms. If resistance value is
not found, one of the wires is broken or the
resistor is bad.
NOTE: Reference your door-specific electrical
schematic for reversing edge connections.
These connections may be different for dif-
ferent models of doors.
IMPORTANT: After control system start-up,
test the reversing edge accord-
ing to the instructions provided
in the owner’s manual that came
with the door. You must verify
that the bottom bar reversing
edge operates properly before
placing the door into service.
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