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Analog I/O Modules (AD268 / DA264 / TC218)
2. Specifications
PART 3 TC218
2. Specifications
This section describes the TC218 specifications.
The general specification for the TC218 conforms to the specification for the T2 PLC.
2.1 Specifications
Item TC218
Input type Voltage input Thermocouple input
mV input Type K Type J Type E
Input range
-100 to +100
mV
-200 to +1200
°C
-200 to +800
°C
-200 to +600
°C
Number of input channels 8 channels 7 channels 7 channels 7 channels
Input impedance
1MΩ or more
I/O allocation type X 8W (8 input registers XW are assigned)
Resolution 16-bit
Overall accuracy
±0.2% FS (at 25°C)
±0.5% FS (0 to 55°C)
(FS: ±100mV (mV input) or 1400°C (type K))
Temperature drift
±100ppm/°C or less
Conversion cycle Approx. 1ms/channel (Approx. 8ms/8 channels)
Insulation resistance
10MΩ or more
Withstand voltage
1500Vac - 1 minute (between logic and analog circuits)
500Vac - 1 minute (between analog circuit and external 24V)
1500Vac - 1 minute (between analog circuit and FG/LG)
Status indication 1 green LED (On when normal)
Special function
Gain and offset calibration function (mV input only)
Linearize function (thermocouple input)
Cold junction compensation function (thermocouple input)
Burnout detection function (thermocouple input)
Input data averaging function
External 24Vdc power voltage drop detection
External power supply
24Vdc ±10% - 120mA
Internal 5Vdc current
consumption
300mA or less
External connection 20-pin removable terminal block
Weight Approx. 300g
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