2: M
ODULE
S
PECIFICATIONS
2-62
FC5A MicroSmart User’s Manual FC9Y-B1268
Analog Input Specifications (Ladder Refresh Type)
Type No.
FC4A-J8AT1
Analog Input Signal Type
NTC Thermistor
PTC Thermistor
Input Range
–50 to 150°C
Applicable Thermistor
100 k
maximum
Input Detection Current
0.1 mA
AD
Conversion
Sample Duration Time
2 ms maximum
Sample Repetition Time
2 ms maximum
Total Input System Transfer
Time
(Note 1)
10 ms
ch 1 scan time (Note 1)
Type of Input
Single-ended input
Operating Mode
Self-scan
Conversion Method
Successive approximation register method
Input Error
Maximum Error at 25°C
±0.2% of full scale
Temperature Coefficient
±0.005% of full scale/°C
Repeatability after
Stabilization Time
±0.5% of full scale
Non-lineality
No
Maximum Error
±1% of full scale
Data
Digital Resolution
Approx. 4000 increments (12 bits)
Input Value of LSB
25
Data Type in Application
Program
Default:
0 to 4000
Optional:
–32768 to 32767 (selectable for each channel) (Note 2)
Temperature: Celsius, Fahrenheit (NTC only)
Resistance:
0 to 10000
Monotonicity
Yes
Input Data Out of Range
Detectable (Note 3)
Noise
Resistance
Maximum Temporary
Deviation during Electrical
Noise Tests
±3% maximum
(when a 500V clamp voltage is applied to the power supply and I/O lines)
Input Filter
Software
Recommended Cable for
Noise Immunity
—
Crosstalk
2 LSB maximum
Isolation
Between input and power circuit:
Transformer isolated
Between input and internal circuit:
Photocoupler-isolated
Effect of Improper Input Connection
No damage
Selection of Analog Input Signal Type
Using programming software
Calibration or Verification to Maintain
Rated Accuracy
Not possible
Note 1:
Total input system transfer time = Sample repetition time + Internal processing time
The total input system transfer time increases in proportion to the number of channels used.
Note 2:
The data processed in the analog I/O module can be linear-converted to a value between –32768 and 32767. The optional
range designation, and analog I/O data minimum and maximum values can be selected using data registers allocated to analog I/O
modules. See page 9-13.
Note 3:
When an error is detected, a corresponding error code is stored to a data register allocated to analog I/O operating status. See
page 9-7.
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