SIMATIC S7-1200
Analog modules
SB 1231 thermocouple signal board
4/84
Siemens ST 70 · 2011
■
Overview
• For the convenient recording of temperatures with great
accuracy
• 1 input with 16-bit resolution
• Common thermocouple types can be used
• Also for the measurement of analog signals with a low level
(±80 mV)
• Can easily be retrofitted to existing plant
• Can be plugged directly into the CPU
■
Technical specifications
6ES7 231-5QA30-0XB0
Product type designation SB1231 AI 1xTC
Supply voltages
Rated value
•24 V DC Yes
Current consumption
Current consumption, typ. 5mA
Connection method
required front connector Yes
Analog inputs
Number of analog inputs 1; Thermocouples
Permissible input frequency for
current input (destruction limit),
max.
± 35 V
Technical unit for temperature
measurement adjustable
Degrees Celsius/degrees
Fahrenheit
Input ranges
• Thermocouple Yes; J, K; voltage range ±80 MV
Input ranges (rated values),
voltages
• -80 mV to +80 mV Yes
• Input resistance
(-80 mV to +80 mV)
>=1 MOhm
Input ranges (rated values),
thermoelements
• Type J Yes
• Input resistance (type J) 1200°C
• Type K Yes
• Input resistance (Type K) 1372°C
Thermocouple (TC)
• Permissible input voltage for
voltage input (destruction limit),
max.
+-35V
Temperature compensation
• Temperature compensation
parameterizable
No
Analog value creation
Measurement principle Integrating
Integrations and conversion time/
resolution per channel
• Resolution with overrange (bit
including sign), max.
15 bit; + sign
• Integration time, parameterizable
No
• Interference voltage suppression
for interference frequency f1 in Hz
85 dB at 10 / 50 / 60 / 400 Hz
Analog value generation
(in isochronous mode)
Smoothing of measured values
• parameterizable Yes
Errors/accuracies
Temperature error
(relative to input area)
25°C ±0.1% to 55°C ±0.2% total
measurement range
Interference voltage suppression for
f = n x (fl +/- 1%),
fl = interference frequency
• Common mode interference, min. 120 dB
Alarms/diagnostics/status infor-
mation
Alarms
•Alarms Yes
• Diagnostic alarm Yes
Diagnostics
• Diagnostic functions Yes; Can be read out
•Wire break
Yes
Diagnostic indication LED
• for status of the inputs Yes
• for maintenance Yes
Climatic and mechanical
conditions for storage and
transport
Climatic conditions for storage and
transport
• Free fall
- Drop height, max.
(in packaging)
0.3 m; Five times, in dispatch
package
•Temperature
- Permissible temperature range -40°C to +70°C
• Air pressure acc. to
IEC 60068-2-13
- Permissible air pressure 1080 to 660 hPa
• Relative humidity
- Permissible range (without
condensation) at 25 °C
95%
Mechanical and climatic
conditions during operation
Climatic conditions in operation
•Temperature
- Permissible temperature range 0°C to 55°C horizontal mounting,
0°C to 45°C vertical mounting
• Air pressure acc. to
IEC 60068-2-13
- Permissible air pressure 1080 to 795 hPa
• Pollutant concentrations
-SO
2
at RH < 60% without
condensation
S0
2
: < 0.5 ppm;
H
2
S: < 0.1 ppm;
RH < 60% condensation-free
6ES7 231-5QA30-0XB0
Product type designation SB1231 AI 1xTC
© Siemens AG 2011
© Siemens AG 2011
(2 Seiten)
(2 Seiten)
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