Модули ввода SM 1231

General information

Product type designation

SM 1231, AI 4x13 bit

SM 1231, AI 8x13 bit

SM 1231, AI 4x16 bit

Supply voltage

Rated value (DC)

24 V

24 V

24 V

Input current

Current consumption, typ.

45 mA

60 mA

65 mA

from backplane bus 5 V DC, typ.

80 mA

90 mA

80 mA

Power loss

Power loss, typ.

1.5 W

1.5 W

1.8 W

Analog inputs

Number of analog inputs

4; Current or voltage differential inputs

8; Current or voltage differential inputs

4; Current or voltage differential inputs

permissible input voltage for voltage input (destruction limit), max.

35 V

35 V

±35 V

permissible input current for current input (destruction limit), max.

40 mA

40 mA

40 mA

Cycle time (all channels) max.

625 µs

625 µs

100 µs

Input ranges

• ● Voltage

Yes; ±10V, ±5V, ±2.5V

Yes; ±10V, ±5V, ±2.5V

Yes; ±10V, ±5V, ±2.5V or ±1.25V

• ● Current

Yes; 4 to 20 mA, 0 to 20 mA

Yes; 4 to 20 mA, 0 to 20 mA

Yes; 4 to 20 mA, 0 to 20 mA

• ● Thermocouple

No

No

No

• ● Resistance thermometer

No

No

No

• ● Resistance

No

No

No

Input ranges (rated values), voltages

• ● -1.25 V to +1.25 V

Yes

• ● -10 V to +10 V

Yes

Yes

Yes

• — Input resistance (-10 V to +10 V)

≥9 MOhm

≥9 MOhm

≥1 MOhm

• ● -2.5 V to +2.5 V

Yes

Yes

Yes

• — Input resistance (-2.5 V to +2.5 V)

≥9 MOhm

≥9 MOhm

≥1 MOhm

• ● -5 V to +5 V

Yes

Yes

Yes

• — Input resistance (-5 V to +5 V)

≥9 MOhm

≥9 MOhm

≥1 MOhm

Input ranges (rated values), currents

• ● 0 to 20 mA

Yes

Yes

Yes

• — Input resistance (0 to 20 mA)

280 Ω

280 Ω

• ● 4 mA to 20 mA

Yes

Yes

Yes

• — Input resistance (4 mA to 20 mA)

280 Ω

280 Ω

Thermocouple (TC)

Temperature compensation

• — Parameterizable

No

Analog value generation for the inputs

Integration and conversion time/resolution per channel

• ● Resolution with overrange (bit including sign), max.

12 bit; + sign

12 bit; + sign

15 bit; + sign

• ● Integration time, parameterizable

Yes

Yes

Yes

• ● Interference voltage suppression for interference frequency f1 in Hz

40 dB, DC to 60 V for interference frequency 50 / 60 Hz

40 dB, DC to 60 V for interference frequency 50 / 60 Hz

40 dB, DC to 60 V for interference frequency 50 / 60 Hz

Smoothing of measured values

• ● parameterizable

Yes

Yes

Yes

• ● Step: None

Yes

Yes

Yes

• ● Step: low

Yes

Yes

Yes

• ● Step: Medium

Yes

Yes

Yes

• ● Step: High

Yes

Yes

Yes

Errors/accuracies

Temperature error (relative to input range), (+/-)

25 °C ±0.1%, to 55 °C ±0.2% total measurement range

25 °C ±0.1%, to 55 °C ±0.2% total measurement range

25 °C ±0.1% / ±0.3% total measurement range

Basic error limit (operational limit at 25 °C)

• ● Voltage, relative to input range, (+/-)

0.1 %

0.1 %

0.1 %

• ● Current, relative to input range, (+/-)

0.1 %

0.1 %

0.1 %

Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency

• ● Common mode voltage, max.

12 V

12 V

12 V

Interrupts/diagnostics/status information

Alarms

Yes

Yes

Yes

Diagnostics function

Yes

Yes

Yes

Alarms

• ● Diagnostic alarm

Yes

Yes

Yes

Diagnoses

• ● Monitoring the supply voltage

Yes

Yes

Yes

• ● Wire break

Yes

Yes

Yes

Diagnostics indication LED

• ● for status of the inputs

Yes

Yes

Yes

• ● for maintenance

Yes

Yes

Yes

Degree and class of protection

IP degree of protection

IP20

IP20

IP20

Standards, approvals, certificates

CE mark

Yes

Yes

Yes

CSA approval

Yes

Yes

Yes

UL approval

Yes

Yes

Yes

cULus

Yes

Yes

Yes

FM approval

Yes

Yes

Yes

RCM (formerly C-TICK)

Yes

Yes

Yes

KC approval

Yes

Yes

Yes

Marine approval

Yes

Yes

Yes

Ecological footprint

• ● environmental product declaration

Yes

Yes

Yes

Global warming potential

• — global warming potential, (total) [CO2 eq]

43.1 kg

43.1 kg

43.1 kg

• — global warming potential, (during production) [CO2 eq]

7.62 kg

7.62 kg

7.62 kg

• — global warming potential, (during operation) [CO2 eq]

36 kg

36 kg

36 kg

• — global warming potential, (after end of life cycle) [CO2 eq]

-0.544 kg

-0.544 kg

-0.544 kg

Ambient conditions

Free fall

• ● Fall height, max.

0.3 m; five times, in product package

0.3 m; five times, in product package

0.3 m; five times, in product package

Ambient temperature during operation

• ● min.

-20 °C

-20 °C

-20 °C

• ● max.

60 °C

60 °C

60 °C

• ● horizontal installation, min.

-20 °C

-20 °C

-20 °C

• ● horizontal installation, max.

60 °C

60 °C

60 °C

• ● vertical installation, min.

-20 °C

-20 °C

-20 °C

• ● vertical installation, max.

50 °C

50 °C

50 °C

Ambient temperature during storage/transportation

• ● min.

-40 °C

-40 °C

-40 °C

• ● max.

70 °C

70 °C

70 °C

Air pressure acc. to IEC 60068-2-13

• ● Operation, min.

795 hPa

795 hPa

795 hPa

• ● Operation, max.

1 080 hPa

1 080 hPa

1 080 hPa

• ● Storage/transport, min.

660 hPa

660 hPa

660 hPa

• ● Storage/transport, max.

1 080 hPa

1 080 hPa

1 080 hPa

Relative humidity

• ● Operation at 25 ℃ without condensation, max.

95 %

95 %

95 %

Pollutant concentrations

• ● SO2 at RH < 60% without condensation

S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free

S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free

S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free

Connection method

required front connector

Yes

Yes

Yes

Mechanics/material

Enclosure material (front)

• ● Plastic

Yes

Yes

Yes

Dimensions

Width

45 mm

45 mm

45 mm

Height

100 mm

100 mm

100 mm

Depth

75 mm

75 mm

75 mm

Weights

Weight, approx.

180 g

180 g

180 g