E3
Handling Precautions
•
The included base and main unit must be used as a pair.
•
Be sure to fit the hook on the main unit into the base first. If
this is not done, the hook might be broken during mounting.
Removing the main unit from the base
(1) Grasp the main unit near the front and push it in toward the
base.
(2) While pushing, press the tip of the lever on the top of the
main unit.
(3) While pressing the tip of the lever, rotate the main unit down
to remove it.
(1)
(2)
(3)
Handling Precautions
•
Press the tip of the lever. Do not press it down excessively
(2 mm or more). Doing so may break the lever.
WIRING
Wiring precautions
•
Do not run wires outside. The equipment could be damaged in
the event of lightning.
•
When connecting wires to the power terminals, use crimp ter-
minals with insulating sleeves.
•
Check the model number of the controller and the terminal
numbers on the label on the side of the module to prevent any
wiring errors.
•
For connections to power and RS-485 communications termi-
nals, use crimp terminals that are the correct size for M3 screws.
•
Be careful not to allow any crimp-type terminal lugs to touch
adjacent terminals.
•
The signal wires and power wires of the module should be at
least 60 cm away from other power wires or power sources.
Also, do not pass these wires through the same conduit or wir-
ing duct.
•
Before connecting the NX-S01 to other devices in parallel,
check their connection conditions carefully.
•
To ensure stable operation, the NX-S01 is designed not to oper-
ate for 60 seconds after the power is turned ON.
•
After wiring, check that there are no mistakes before turning
the power ON.
Wiring diagrams (model with fault DO)
Connect fault outputs according to the specifications for the
2-piece terminal block.
Press here.
Do not press in this area.
z
Connection diagram
DO
COM
Load
1
2
or
−
+
+
−
z
Fault DO circuit
1
2
DO
COM
PhotoMOS relay
Logic circuit
Fuse
Terminal block
Connecting the power supply
Connect the power terminals as shown below.
1 2
Instrument power supply 24 V DC
4 5 6
+
−
The power supply unit must be a UL Class 2 power supply unit.
Handling Precautions
•
Linked modules supply power to each other. Supply power
to one of the linked modules.
•
I/O wiring to the terminal block or elsewhere should
be connected directly to the power supply for I/O, not
connected via the base unit.
•
If there are multiple wires to the power supply or some other
wiring difficulty, add a relay terminal or the like.
•
Use a power supply that can supply the total power
requirement of the linked modules.
Connecting the RS-485 communications
Connect the RS-485 wiring for CPL or Modbus as shown below.
1
2
4
5
6
DA (+) DB (−) SG
Handling Precautions
•
0.5 W or greater terminating resistor of 150 Ω ±5 % at each
end of the communications lines. However, if any device that
does not allow a terminating resistor is connected to the
same communications line, follow the instructions on that
device.
•
Be sure to connect the SG terminals to each other. Failure to
do so might cause unstable communications.
•
For communications wiring, use twisted pair cables.
I/O isolation
Items surrounded by solid lines are isolated from other signals.
Power supply (including side connector)*
Logic circuits
Loader jack
RS-485, Ethernet communications through side connector*
Displays (LED, switch, etc)
Fault DO
Ring communications through side connector*
* Power, side-connector ring communications, and RS-485/side-connector
Ethernet communications are isolated from each other.