4: SPECIAL FUNCTIONS
USER’S MANUAL 4-23
Function Specifications (A/D Converter Unit)
Load Impedance in Signal Range
Voltage input unit: 1 MΩ minimum
Current input unit: 250Ω
Analog Input Error
Maximum error at 25°C: ±0.6% of full scale
Temperature coefficient: +0.012% of full scale/°C (typ.)
Maximum Error over Full Temperature Range ±1% of full scale
Digital Resolution 250 increments
Data Format Returned to User Program BCD (0 to 249, 250: overflow)
Input Value of LSB (Least Significant Bit)
FC2A-AD1 FC2A-AD2 FC2A-AD3 FC2A-AD4 FC2A-AD5
40 mV 64 µA 20 mV 40 mV 80 mV
Maximum Permanent Allowed Overload
(No Damage)
±16V ±64 mA ±16V ±16V ±16V
Digital Output Reading at Overload 250
Type of Input Differential input
Common Mode Reject Ratio –50 dB
Common Mode Voltage 16V DC
Other Inputs None
Total Input System Transfer Time 1 msec maximum
Sample Duration Time 125 msec
Sample Repetition Time 1 msec maximum
Input Filter Characteristics None
Maximum Temporary Deviation during
Electrical Noise Tests and Test Conditions
3% maximum of full scale at impulse test 500V
Conversion Method V-F conversion
Operating Mode Self-scan
Type of Protection Resistor, diode, photocoupler
Output Short-circuit Damage will be caused
Maximum Allowed Output Voltage
Voltage at the +24V DC terminal + 0.3V or – 0.3V
(between GND and OUTPUT)
Maximum Allowed Input Voltage Maximum permanent allowed overload (no damage)
External
Power
Supply
Data
Rated Power Voltage 24V DC
Power Voltage Range 19 to 30V DC
Resetting Method
Use a power supply of self-reset type or with an overcurrent protection
against 10A inrush current into the A/D converter unit
Output Power 2.5W minimum
Calibration or Verification to Maintain Rated
Accuracy
Once every 6 months (recommended value)
Effect of Improper Input Terminal Connection
If a signal over the maximum permanent allowed overload (no damage)
is applied, permanent damage may be caused.
Monotonicity Yes
Non-linearity 0.2% maximum of full scale
Repeatability after Stabilization Time 0.5% maximum of full scale (more than 30 minutes after power up)
Life Time of Electromagnetic Relay
Multiplexers
None
MICRO
3
Setting
Set hard filter value to 10 (default) using FUN7
Factory setting: 10 (default)
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