2: M
ODULE
S
PECIFICATIONS
2-6
Analog Input Specifications (Ladder Refresh Type)
For Note 1 through Note 4, see page 2-7.
Type No.
FC4A-J8AT1
Analog Input Signal Type
NTC
PTC
Input Range
–50 to 150°C
Applicable Thermistor
100 k
Ω
maximum
Input Detection Current
0.1 mA
AD
Conversion
Sample Duration Time
2 ms maximum
Sample Repetition Time
2 ms
×
channels
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
0.05°C
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
(Note 4)
±3% maximum
Input Filter
Software
Recommended Cable for
Noise Immunity
—
Crosstalk
2 LSB maximum
Isolation
Isolated between input and power circuit
Photocoupler-isolated between input and internal circuit
Effect of Improper Input Connection
No damage
Selection of Analog Input Signal Type
Using software programming
Calibration or Verification to Maintain
Rated Accuracy
Impossible
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