Technical Description
IP244
C79000–B8576–C859–02
2–8
Additional error caused by voltage divider
(e.g. channels 13 and 14) 0.25 %
Temperature influence
(range 0 to 50 mV)
1
o
/
oo
/ 10 Kelvin
(2 units / 10 Kelvin)
Additional error caused by temperature influence
in channels with voltage dividers
(temperature coefficient of the voltage divider)
0.5
o
/
oo
/ 10 Kelvin
(1 unit / 10 Kelvin)
Error message when tolerance exceeded,
overflow or line break
yes
Line break detection yes for sensors with
Ri < 1 kohm
Measuring principle integrating
Measured value resolution (internal) 11 bits + sign (value plus
sign);
2048 units;
for Pt 100 0 to 4096 units
Encoding time per channel typically 50 ms
40 ms for 0
60 ms for 2048 units
80 ms for 4096 units
Integration time
– for 50 Hz power supply frequency 20 ms
– for 60 Hz power supply frequency 16
2
/
3
ms
Max. permissible length of lines
for thermocouples (50 mV) 50 m, shielded
for Pt 100 and linear sensors (> 500 mV) 200 m, shielded
(the recommended maximum
line length; can be exceeded
if suitable measures are
taken to prevent parasitic
voltages)
Comparator channel (fixed wiring on channel 13)
Rated input voltage 10.24 V
Resolution 1024 units
(1 unit = 10 mV)
Max. permissible potential difference (U
CM
) < 1 V
pp
Time constant typically 0.2 ms
Error
< 0.5 %
Comparator output (K) digital ouptut 18 (technical
data as for digital outputs
1 to 17)
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