Siemens SIMATIC S7-300 Reference Manual page 334

Analog Modules
Module filtering mode
Integration/conversion time/
resolution (per channel)
•
Programmable
•
Basic conversion time in
ms
•
Additional conversion time
for measuring resistance,
in ms
•
Additional conversion time
for open-circuit monitoring,
in ms
•
Resolution including sign
•
Noise suppres
sion for interference
frequency f1 in Hz
Smoothing of the measured
values
Basic response time of module
(all channels enabled)
Suppression of interference, Limits of Error
Noise suppression for f = n
"(f1 = interference frequency) n = 1.2, etc.
•
Common-mode
interference
(U 60 VAC)
CM <
•
Series-mode interference
(peak value of interference
< rated value of input
range)
Crosstalk between the inputs
Operational limit (over entire temperature range, referred
to 0 to 60 _C input range)
•
Resistance thermometer
•
Resistors
Basic error (operational limit at 25
range)
•
Resistance thermometer
•
Resistors
Temperature error (with
reference to the input range)
* The resistance measurement for a three-conductor connection is performed every 5 minutes.
** Open-circuit monitoring in module filtering mode 4 Channels, Hardware is performed every 3 seconds.
4-128
4 channels, hardware
Yes
3.3
185*
85**
16 bits
400 / 60 / 50
None / low/
average/ high
10 ms
(f1 1%),
> 100 dB
> 90 dB
> 100 dB
°
"1.0 C
"0.1 %
°
C, referred to input
°
"0.5 C
"0.05 %
"0.005 %/K
Linearity error (with reference to
the input range)
Repeat accuracy (in the steady
°
state at 25 C, referred to the
input range)
Status, Interrupts, Diagnostics
Interrupts
•
Hardware interrupt
•
Diagnostic interrupt
Diagnostic functions
•
Group error display
•
Diagnostic information can
be displayed
Data for Selecting a Sensor
Input range (rated values) input
resistance
•
Resistance thermometer
•
Resistors
Maximum input voltage for
voltage input (destruction limit)
Connection of the sensor
•
For measuring resistance
With two-conductor
connection
With three-conductor
connection
With four-conductor
connection
Characteristic linearization
•
Resistance thermometer
•
Technical unit for
temperature measurement
Programmable Logic Controllers S7-300 Module Data
"0.02 %
"0.01 %
Programmable
(channels 0 – 7)
Programmable
Programmable
Red LED (SF)
Possible
Pt 100, Pt 200, Pt 500,
Pt 1000, Ni 100, Ni
120, Ni 200, Ni 500, Ni
1000, Cu 10
150, 300, 600 W
35 VDC continuous;
75 VDC for max. 1 s
(duty factor 1:20)
Possible (without
resistance correction)
Possible
Possible
Pt 100, Pt 200, Pt 500,
Pt 1000, Ni 100, Ni
120, Ni 200, Ni 500, Ni
1000, Cu 10 (standard
and climatic range)
Degrees Celsius;
degrees Fahrenheit
A5E00105505-03