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5. Wiring
Cautions on wiring
•
Make sure to shut down the power supplies of all phases on the outside before starting installation
or wiring.
If the power supplies are not shut down, you may receive an electrical shock or the unit may be
damaged.
•
As to loads, such as a connector for normal rotation and a connector for reverse rotation,
which are dangerous when turning on at the same time, make sure to interlock them outside
the PLC in addition to interlocking of them in a program in the PLC.
•
Correctly connect the power cable of the FX
If the AC power supply is connected to a DC I/O terminal or DC power terminal, the PLC may
be damaged.
•
Perform Class D grounding with an electric wire of 2 mm
FX
-2LC and the PLC. However, never perform common grounding with a strong power system.
2N
When a temperature sensor is a thermocouple
FX
-2LC
2N
24+
24-
OUT1
COM
OUT2
CT
CT
PTA/
FG
PTB/TC+
PTB/TC-
CT
CT
PTA/
FG
PTB/TC+
PTB/TC-
When a temperature sensor is a resistance thermometer bulb
FX
-2LC
2N
PTA/
FG
PTB/TC+
PTB/TC-
6. Specifications
6.1 General specifications
Item
Withstand voltage
Other General specifications are equivalent to those for the PLC main unit. Refer to the manual of the PLC
main unit.
6.2 Power supply specifications
Item
Driving power supply
Power supply for
communication
Current consumption
Insulation method
Number of occupied
I/O points
DC24V
-
+
*1
SSR
SSR
Shielded cable
Thermocouple
Shielded cable
Thermocouple
Resistance
thermometer bulb
Shielded cable
500V AC for 1 minute
(between analog input terminal and grounding terminal)
24V DC (-15% to +10% maximum), input from driving power
supply terminal
5V DC (supplied from inside of PLC main unit)
24V DC, 55 mA and 5V DC, 70 mA
Analog input area and PLC are insulated by photocoupler.
Power supply and analog input are insulated by DC/DC converter.
(Channels are insulated from each other.)
8 points in total (including input points and output points)
-2LC and the PLC as described in this manual.
2N
AC power
supply
CT
Heater
CT
Heater
Specifications
Specifications
2
or more to the grounding terminal in the
*1 Connect the ground terminals of
the FX
-2LC unit and the main
2N
unit. Use class D grounding on
the main unit.
•
Use the compensating cable
when you use the thermo couple.
•
The temperature sensor must use
three line type.
The resistance of the lead wire is a
little, and use the wire rod without
the resistance difference between
three lines.
•
Secure the termination using a
tightening torque of 0.5 to 0.8N m
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