-10V to +10V
-20mA to +20mA
(100! or less)
Analog Input Block
! The analog input is received through a twisted pair
shielded cable. This cable should be wired separately
from power lines or any other lines which may induce
" If a voltage ripple occurs during input, or there is
electrically induced noise on the external wiring,
connect a smoothing capacitor of 0.1 to 0.47 µF, 25V.
# If you are using current input, connect the V+ and I+
terminals to each other.
$ If there is excessive electrical noise, connect the FG
(frame ground) terminal with the grounded terminal on
the FX2N-4AD. (In CH1, there is no FG terminal. Use
FG terminal of other channels.)
% Connect the ground terminal on the FX2N-4AD unit
with the grounded terminal on the main unit. Use
grounding on the main unit, if available.
4. CONNECTION WITH PLC
1) Up to 4 FX2N-4AD units can connect to the FX0N series PLC, up to 5 for FX1N, up to 8 for FX2N or, up
to 4 for an FX2NC series PLC, all with powered extension units.
However the following limitation exists when the undermentioned special function blocks are
FX2N: Main unit and powered extension units of 32 I/O points or less. Current consumption
available for the undermentioned special function blocks ≤ 190mA
FX2N: Main unit and powered extension units of 48 I/O points or more. Current consumption
available for the undermentioned special function blocks ≤ 300mA
FX2NC: Up to 4 undermentioned special function blocks can be connected regardless of the system
When using an FX2NC, an FX2NC-CNV-IF is required.
FX0N/1N: Main unit and powered extension units. Up to 2 undermentioned special function blocks can
be connected regardless of the system I/O.
2) Each block occupies 8 I/O points (The 8 points can be allocated from either inputs or outputs).
3) FX2N-4AD consumes 30mA from the 5V DC bus.
The total 5V consumption of all special function blocks connected to either the FX2N or FX2NC main
unit or FX2N extension unit must not exceed the 5V source capacity of the system.
4) The FX2N-4AD and main unit are connected by a cable on the right of the main unit.
5.1 Environmental specification
Dielectric withstand voltage
Same as those for the main unit
500V AC, 1min (between all terminals and ground)
5.2 Performance specification and others
Number of occupied I/O points
24V DC ± 10%, 55mA
(external power supply from the main unit)
5V DC, 30mA
(internal power supply from main unit)
Photo-coupler isolation between analog and digital circuits.
DC/DC converter isolation of power from the main unit.
No isolation between analog channels.
The analog block occupies 8 points.
(can be either inputs or outputs)