Input Specifications; Measurement Precision - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Input specifications

Items Specifications
Number of input points 4 points
*1
Input type Thermocouple
Resistance thermometer
Micro voltage input

Measurement precision

Page 17 Measurement precision
Cold contact temperature When ambient
compensation error temperature is 0 to 55
When ambient
temperature is -20 to 0
0.1 (0.1), 1.0 (1.0), 0.5 μV, or 5.0 μV
Resolution
Varies depending on input range of used sensors.
Sampling period 250 ms/4ch
Approx. 0.125 μV/Ω
Effect of external resistance
(When thermocouple is used)
Effect of input lead wire 3-wire type
resistance (When resistance
2-wire type
thermometer is used)
Input impedance 1 MΩ or more
Sensor current Approx. 0.20 mA (When resistance thermometer is used)
Operation when input is Upscale/downscale (When resistance thermometer is used)
disconnected/Operation
when input is short-circuited
*1 A different input can be selected for each channel.
Measurement precision
Measurement precision is as described below. However, cold contact temperature compensation errors are not included in
the thermocouple precision. For cold contact temperature compensation errors, refer to Page 17 Input specifications
Further, the input value rounds up the minimum resolution for the measurement precision described below.
If the ambient temperature is 25±5
Input type Input range
K, J, E, T, PL II, U, L Less than -100
-100 to less than +500
500 or more
R, S, N, W5Re/W26Re Less than 1000
1000 or more
B Less than 400
400 to less than 1000
1000 or more
Pt100, JPt100, Pt1000 Less than 200
200 or more
Micro voltage input ± (0.3% of span) ±1 digit
K, J, R, S, E, T, B, N JIS C 1602-1995
PL II, W5Re/W26Re, U, L
3-wire Pt100 JIS C 1604-1997 (New JIS)
3-wire JPt100 JIS C 1604-1981 (obsolete JIS)
2-wire/3-wire Pt1000 JIS C 1604-2013
Within ±1.0
However, within ±2.0 while input value is -150 to -100 / within ±3.0 while input value is -200
to -150
Within ±1.8
However, within ±3.6 while input value is -150 to -100 / within ±5.4 while input value is -200
to -150
Approx. 0.03%/Ω of full scale. 10 Ω or less per 1-wire
Approx. 0.04%/Ω of full scale. 7.5 Ω or less per 1-wire
Measurement precision
±3.0 ±1 digit
±1.5 ±1 digit
± (0.3% of display value) ±1 digit
±3.0 ±1 digit
± (0.3% of display value) ±1 digit
±70 ±1 digit
±3 ±1 digit
± (0.3% of display value) ±1 digit
±0.6 ±1 digit
± (0.3% of display value) ±1 digit
2 SPECIFICATIONS
2.3 Performance Specifications
2
17