SIMATIC S7-1200
Analog modules
SB 1231 analog input module
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Siemens ST 70 · 2011
4
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Overview
• Analog input module for the SIMATIC S7-1200
• With extremely short conversion times
• For the connection of analog sensors without additional ampli-
fiers
• For the solution of more complex automation tasks as well
• Can be plugged directly into the CPU
■
Technical specifications
6ES7 231-4HA30-0XB0
Product type designation SB1231 AI 1x12 BIT
Supply voltages
Rated value
•24 V DC Yes
Connection method
required front connector Yes
Analog inputs
Number of analog inputs 1; Current or voltage differential
inputs
permissible input frequency for
current input (destruction limit),
max.
± 35 V
Cycle time (all channels) max. 156.25 μs; 400 Hz suppression
Input ranges
•Voltage Yes; ±10 V, ±5 V, ±2.5 V
• Current Yes; 0 to 20 mA
• Thermocouple No
• Resistance thermometer No
• Resistance No
Input ranges (rated values),
voltages
• -10 V to +10 V Yes
• Input resistance
(-10 V to +10 V)
9 MOhm
• -2.5 V to +2.5 V
Yes
• Input resistance
(-2.5 V to +2.5 V)
9 MOhm
• -5 V to +5 V Yes
• Input resistance
(-5 V to +5 V)
9 MOhm
Input ranges (rated values),
currents
• 0 to 20 mA Yes
• Input resistance
(0 to 20 mA)
250 Ohm
Voltage input
• permissible input voltage for
voltage input (destruction limit),
max.
35 V
Cable length
• Cable length, shielded, max. Twisted and shielded in pairs
Analog value creation
Measurement principle Integrating
Integrations and conversion time/
resolution per channel
• Resolution with overrange
(bit including sign), max.
11 bit; + sign
• Integration time, parameterizable
Yes
• Interference voltage suppression
for interference frequency f1 in Hz
40 dB, DC to 60 Hz
Smoothing of measured values
• parameterizable Yes
• Step: None Yes
•Step: Low
Yes
• Step: Medium Yes
•Step: High Yes
Errors/accuracies
Temperature error (relative to input
area)
25 °C ±0.3% to 55 °C ±0.6% total
measurement range
Alarms/diagnostics/status infor-
mation
Alarms
•Alarms Yes
• Diagnostic alarm Yes
Diagnostics
• Diagnostic functions Yes
•Wire break No
Diagnostic indication LED
• for status of the inputs Yes
• for maintenance
Yes
Climatic and mechanical condi-
tions 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
• 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 231-4HA30-0XB0
Product type designation SB1231 AI 1x12 BIT
© Siemens AG 2011
© Siemens AG 2011
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