Siemens SIMATIC User Manual

Analog modules
6.9 Analog input module SM 331; AI 8 x RTD; (6ES7331-7PF01-0AB0)
S7-300 Module data
390 Manual, 06/2017, A5E00105505-AJ
Parameters
Range of values
Default
Parameter
type
Scope
Measurement
• Measurement type
disabled
R-4L resistance
(4-wire connection)
R-3L resistance
(3-wire connection)
RTD-4L thermoresistor
(linear, 4-wire connection)
RTD-3L thermoresistor
(linear, 3-wire connection)
RTD-4L
dynamic Channel
group
• Measuring range
See chapter Measurement types and
measuring ranges (Page 387)
Pt 100 Klima
0.003850
(IPTS-68)
• Temperature unit
Degrees Centigrade; degrees Fahren-
heit
degrees Centi-
grade
dynamic
Module
• Mode of operation
8-channel mode (hardware filter)
8-channel mode (software filter)
4-channel mode (hardware filter)
8-channel
mode, hard-
ware filter
dynamic
Module
• Temperature coefficient for
temperature measurement with
thermoresistor (RTD)
Platinum (Pt)
0.003850 Ω/Ω/ °C (IPTS-68)
0.003916 Ω/Ω/ °C
0.003902 Ω/Ω/ °C
0.003920 Ω/Ω/ °C
0.003850 Ω/Ω/ °C (ITS-90)
0.003910 Ω/Ω/ °C
Nickel (Ni)
0.006170 Ω/Ω/ °C
0.006180 Ω/Ω/ °C
0.006720 Ω/Ω/ °C
0.005000 Ω/Ω/ °C (LG Ni 1000)
Copper (Cu)
0.004260 Ω/Ω/ °C
0.004270 Ω/Ω/ °C
0.004280 Ω/Ω/ °C
0,003850
dynamic Channel
group
• Noise suppression*
50/60/400 Hz; 400 Hz; 60 Hz; 50 Hz
50/60/400 Hz
dynamic
Channel
group
• Smoothing
none
weak
medium
strong
none
dynamic
Channel
group
* 50/60/400 Hz only programmable for 8-channel mode (hardware filter) and 4-channel mode (hardware filter);
50 Hz, 60 Hz or 400 Hz only programmable for 8-channel mode (software filter)
See also
Diagnostics messages of analog input modules (Page 296)

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)