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Handling Precautions
•
RX modules have terminals for connecting a commercial
power supply for the load in the front terminal block. At an
RX module installation site, be sure to display the following
warnings to prevent electric shock.
[Breakers]
•
Warning: electric shock or short circuit can cause injury. Be
sure to turn off the main breaker before electric work or
maintenance.
[RX module installation site]
•
Warning: fire or electric shock can occur. Be sure to observe
the following precautions fully.
•
Read the installation manual or operation manual for the
control cabinet.
•
Do not modify the module without permission.
•
After a test, be sure to return the mode to the previous
setting.
•
Close and lock the door of the control cabinet after use.
•
Do not attach or detach a terminal block while power is
being supplied.
•
Do not attach or detach an RX module while power is being
supplied.
•
Do not open the cover of the terminal block while power is
being supplied.
„ Installation position
Install so that the device is positioned as shown.
Top
Example of
Front
DIN rail installation
„ Installation space
When installing, leave a space of at least 50 mm above and below,
100 mm on the right and left, and 80 mm from the front of the
unit for air intake and device removal, wiring, and maintenance.
Install at least 100 mm away from other devices or another row
of RX units. Do not install above heat sources such as electric
devices.
Example for RX-L90
50 mm
100 mm
CB
RX-L90 RX-R
CA
50 mm
CB: Communication box*
CA: Communication adapter*
*
„
Optional accessories (sold separately) (P. E9) .
„ Module connection
This device can be connected to the RX-R with the side connec-
tor on the base. Connecting the modules connects the power and
communication of each module, reducing the amount of wiring
that is required. Connect the modules before installing them on
the DIN rail. A module connection example is shown below.
Vertical wall
Top
Front
Front panel
50 mm
100 mm
80 mm
RX-R
RX
50 mm
Wiring/ducts, etc.
z Multiple burners
RX-L
RX-R
24 V DC
Connecting through the side connector
z Multiple zones
RX-L
RX-L
24 V DC
24 V DC
RX-L
control signal
RX-L connection
Up to 16 modules
For Ethernet connections, the RX-L90 requires a communica-
tion box or a communication adaptor.
Handling Precautions
•
Modules receive and supply power through the side
connectors. Up to 8 connected RX-L and RX-R modules can
receive and supply power in this way.
•
Supply power to one of the modules connected by side
connectors.
•
Use a power supply that is sufficient for the total power
consumption of all the modules connected by side
connectors.
•
The right side of this unit can only be connected to an RX-R.
RX-Ls cannot be connected to each other.
•
Install breakers for each zone so that burner maintenance
does not affect the power to every zone.
•
Communication box and communication adapter can be
connected only on the left side of the unit.
„ Installation method
There are two methods of installing this device, as described
below.
•
Screw installation
•
DIN rail installation
If a communication box and communication adapter are attached
to the RX-L90, it must be mounted on a DIN rail.
z Screw installation
Secure the device by inserting 4 M4 screws in the provided
screw holes.
Installation screws (M4)
E3
RX-R
RX-R
RX-R control signal
Up to 8 modules
RX-R
RX-R
RX-L
RX-R
24 V DC
(80)
(80)
80
33
33
66
66
RX-R
24 V DC
RX-R
Unit: mm
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