Mitsubishi Electric FX2N-2AD User Manual page 2

1. Introduction
The FX -2AD type analog input block (hereafter referred to as the FX
2N
analog input of two points (voltage and current input) into a digital value of 12 bits, and to forward the
values to the Programmable Controller (hereafter referred to as a PLC).
FX 2AD can connected to the FX
2N
-
Programmable Controllers.
1) The analog input is selected from the voltage or current input by the method of connecting wires.
At this time, assume the setting to be two channels common analog input (voltage or current input).
2) The analog to digital conversion characteristics can be adjusted.
3) The block occupies 8 I/O points which can be allocated from either inputs or outputs.
4) The data transfer with the PLC uses the FROM/TO instructions.
FX /FX series PLC can use direct specification of buffer memory.
3U 3UC
2. External Dimensions and Parts
3. Wiring
Voltage input 0~10V DC
Current input 4~20mA
*1 The FX -2AD cannot have 1 channel as an analog voltage input and one channel as current input because both
2N
channels use the same offset and gain values. For current input please short circuit VIN and IIN as shown in the
diagram.
Connect a 0.1 to 0.47 µF 25V DC capacitor with the position of *2 when there is voltage ripple in the voltage input or
*2
there will be a lot of noise.
4. Connection with Programmable controller
1) The FX -2AD and main unit are connected by a cable on the right of the main unit.
2N
2) Up to 4 FX -2AD units can connect to the FX
2N
FX /FX /FX
3GC 3U 3UC
However the following limitation exists when the undermentioned special function blocks are connected.
FX : Main unit and powered extension units of 32 points I/O or less. Consumption current available for
2N
undermentioned special function blocks ≤ 190mA
FX : Main unit and powered extension units of I/O 48 points or more. Consumption current available
2N
for undermentioned special function blocks ≤ 300mA
FX : Up to 4 undermentioned special function blocks can be connected regardless of the system I/O.
2NC
FX : Main unit and powered extension units. Up to 2 undermentioned special function blocks can be
0N/1N
connected regardless of the system I/O.
Consumption current of 24V DC for one unit
The consumption current of the above units is to be subtracted from the service power supply of the
host PLC.
3) The blocks occupies 8 points. (The 8 points can be allocated from either inputs or outputs).
4) FX -2AD consumes 5V DC by 20mA.
2N
The total 5V consumption of all special function blocks connected to a main unit or an extension unit
must not exceed the 5V source capacity of the system.
, FX
0N 1N
Mass (Weight): Approx. 0.2kg (0.44lbs)
Accessories: Special Function block number label
VIN
IIN
*2
COM
VIN
*1 IIN
COM
PLC
Extension cable
or, up to 4 for the FX
, FX , FX , FX
2N 2NC
37.3KΩ
250Ω
165KΩ
AG
37.3KΩ
250Ω
165KΩ
FX -2AD
2N
series PLC, up to 5 for FX
0N
series PLC, all with powered extension units.
2NC
FX -2AD
2N
50mA
-2AD) is used to convert the
2N
, FX , FX , and the FX
3G 3GC 3U
Dimensions: mm (inches)
Channel number enter
up to 8 for FX
1N,
FX -2DA
2N
85mA
series
3UC
/FX /
2N 3G
FX -3A
0N
90mA