6ES7 331-7RD00-0AB0

6ES7 331-7SF00-0AB0

Supply voltages

Load voltage L+

• Rated value (DC)

24 V

24 V

Power supply to the transmitters

• present

Yes

• Rated value (DC)

13 V; at 22 mA

• No-load voltage (DC)

25.2 V

Current consumption

from backplane bus 5 V DC, max.

60 mA

120 mA

from supply voltage L+, max.

150 mA

Power losses

Power loss, typ.

3 W

0.6 W

Connection method

required front connector

20-pin

20-pin

Analog inputs

Number of analog inputs

4

8; 8x thermocouples; 4x RTD thermal sensors

Cable length, shielded, max.

200 m

200 m; TC: 50m

Input ranges (rated values), currents

• 0 to 20 mA

Yes

• 4 to 20 mA

Yes

Input ranges (rated values), thermoelements

• Type B

Yes

• Type E

Yes

• Type J

Yes

• Type K

Yes

• Type L

Yes

• Type N

Yes

• Type R

Yes

• Type S

Yes

• Type T

Yes

• Type U

Yes

Input ranges (rated values), resistance thermometers

• Ni 100

Yes

• Pt 100

Yes

• Pt 200

Yes

Current input

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

40 mA

Analog value creation

Measurement principle

Sigma Delta

Sigma Delta

Integrations and conversion time/ resolution per channel

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

16 bit; 10 to 15 bits + sign

16 bit; 10 to 15 bits + sign

• Integration time, parameterizable

Yes; 2.5 to 100 ms

Yes; 2.5 to 100 ms

• Interference voltage suppression for interference frequency f1 in Hz

10 to 400 Hz

10 to 400 Hz

Encoder

Connection of signal encoders

• for current measurement as 2-wire transducer

Yes

Yes

• for current measurement as 4-wire transducer

Yes

Yes

Ex(i) characteristics

Max. values of input circuits (per channel)

• Co (permissible external capacity), max.

90 nF

43 µF

• Io (short-circuit current), max.

68.5 mA

28.8 mA

• Lo (permissible external inductivity), max.

7.5 mH

40 mH

• Po (power of load), max.

431 mW

41.4 mW

• Ri, max.

50 Ω

• Uo (output no-load voltage), max.

25.2 V

5.9 V

Errors/accuracies

Temperature error (relative to input area)

Temperature error: 0.001 to 0.002%/K

Operational limit in overall temperature range

• Current, relative to input area

+/- 0,45 %

• Resistance-type thermometer, relative to input area

0.09 to 0.04%

Basic error limit (operational limit at 25 °C)

• Current, relative to input area

+/- 0,1 %

• Resistance-type thermometer, relative to input area

+/- 0,1 %

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

• Series mode interference (peak value of interference < rated value of input range), min.

60 dB

60 dB

• Common mode interference, min.

130 dB

130 dB

Interrupts/diagnostics/status information

Diagnoses

• Diagnostic information readable

Yes

Yes

• Overrange

Yes

Yes

• Wire break in signal transmitter cable

Yes

Yes

• Short circuit of the signal encoder cable

Yes

Yes

Galvanic isolation

Galvanic isolation analog inputs

• Galvanic isolation analog inputs

Yes

Yes

Permissible potential difference

between the inputs (UCM)

60 V DC/30 V AC when used in the hazardous area; 400 V DC/250 V AC when used in the NON-hazardous area

60 V DC/30 V AC when used in the hazardous area; 400 V DC/250 V AC when used in the NON-hazardous area

between inputs and MANA (UCM)

60 V DC/30 V AC when used in the hazardous area; 400 V DC/250 V AC when used in the NON-hazardous area

60 V DC/30 V AC when used in the hazardous area; 400 V DC/250 V AC when used in the NON-hazardous area

Standards, approvals, certificates

Type of protection acc. to EN 50020 (CENELEC)

[EEx ib] IIC

[EEx ib] IIC

Type of protection acc. to FM

Class I, Division 2, Group A, B, C, D T4

Class I, Division 2, Group A, B, C, D T4

Test number PTB

Ex-96.D.2092X

Ex-96.D.2108X

Dimensions and weight

Weight

• Weight, approx.

290 g

210 g