Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 137)

LT-4201TM/4301TM Hardware Manual
137
Temperature Input (Temperature Probes) Characteristics
The table describes the characteristics of the Temperature Input (Temperature Probes):
WARNING
UNINTENDED EQUIPMENT OPERATION
Do not exceed any of the rated values specified.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
Input Characteristics
Input sensor type Pt100/Pt1000/Ni100/Ni1000
Input temperature range Pt100/Pt1000: -200...600 ° C (-328...1112° F)
Ni100/Ni1000: -20...200 ° C (-4...392° F)
Measuring current Pt100/Ni100 1.12 mA ± 3.5%
Pt1000/Ni1000 0.242 µA ± 3.5%
Input impedance Typically 10 M Ω
Sample duration time 10 ms+1 cycle time
Wiring type 2-wire or 3-wire connection configured by software
for all inputs
Conversion mode Sigma delta type
Input filter Low pass
Resolution temperature value 0.1 ° C (0.18 ° F)
Detection type Open circuit (detection on each channel)
Input tolerance* Maximum
deviation at 25
° C
(77 ° F) without
electromagnetic
disturbance
± 5 ° C (41° F)
Maximum
deviation at
25...50
° C
(77...122 ° F)
Pt type: ± 5.6 ° C (42.08° F)
Ni type: ± 5.2 ° C (41.36° F)
Temperature drift 30 ppm/ ° C
Digital resolution 16 bits
Rejection in
differential mode 50/60 Hz Typically 60 dB
Common mode
rejection Typically 80 dB
Isolation method Photo coupler Isolation
Permitted input signal ±5 Vdc max.
Cable length Pt100/Ni100 20 Ω or less
Pt1000/Ni1000 200 Ω or less
Terminal blocks Type: 3.5 mm (0.137 in.) pitch
Terminal blocks are removable
Noise resistance - cable Shielded cable is necessary
* Excluding errors caused by the wiring