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SIMATIC S7-1200

Analog modules

SM 1234 analog input/output module

4/79

Siemens ST 70 · 2011

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Technical specifications (continued)

4

Analog outputs

Number of analog outputs 2; current or voltage

Output ranges, voltage

• -10 to +10 V Yes

Output ranges, current

• 0 to 20 mA Yes

Load impedance (in rated range of

output)

• with voltage outputs, min. 1000

• with current outputs, max.

600 

Analog value creation

Measurement principle Differential

Integrations and conversion time/

resolution per channel

• Resolution (incl. overrange) Voltage: 14 bit; Current : 13 bit

• Resolution with overrange

(bit including sign), max.

12 bit; + sign

• Integration time, parameterizable Yes

• Interference voltage suppression

for interference frequency f1 in Hz

40 dB, DC to 60 V for interference

frequency 50 / 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 ±0.1% to 55°C ±0.2% total

measurement range

Temperature error (relative to output

area)

25°C ±0.3% to 55°C ±0.6% total

measurement range

Basic error limit (operational limit at

25 °C)

• Voltage, relative to input area +/- 0,1 %

• Current, relative to input area +/- 0,1 %

• Voltage, relative to output area

+/- 0,3 %

• Current, relative to output area +/- 0,3 %

Interference voltage suppression for

f = n x (fl +/- 1%), fl = interference

frequency

• common mode voltage, max. 12 V

Alarms/diagnostics/status infor-

mation

Alarms

•Alarms Yes

• Diagnostic alarm

Yes

Diagnostics

• Diagnostic functions Yes

• Monitoring the supply voltage to

the electronics

Yes

•Wire break

Yes

• Short circuit

Yes

Diagnostic indication LED

• for status of the inputs Yes

• For status of the outputs Yes

• for maintenance

Yes

6ES7 234-4HE30-0XB0

Galvanic isolation

Galvanic isolation analog outputs

• between the channels and the

power supply of the electronics

No

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

• 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

Degree of protection

IP20 Yes

Standards, approvals, certificates

CE mark Yes

C-TICK

Yes

FM approval Yes

Mechanics/material

Type of housing (front)

• Plastic Yes

Dimensions and weight

Dimensions

• Width 45 mm

•Height 100 mm

•Depth

75 mm

Weight

• Weight, approx. 220 g

6ES7 234-4HE30-0XB0

© Siemens AG 2011

© Siemens AG 2011

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SIMATIC S7-1200 1

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