SM 326 F digital input modules - Safety Integrated Siemens

Область применения



Fail-safe digital input modules are suitable for connecting

  • Switches and 2-wire proximity switches (BEROs)
  • Sensors according to NAMUR and mechanical contacts, also for signals from hazardous areas

The modules are implemented centrally with SIMATIC S7-31xF-2 DP and in the ET 200M distributed I/O station in combination with SIMATIC IM 151-7 F-CPU, S7-31xF-2 DP, S7-416F-2 and S7-400F/FH. They can also be used in non-safety-relevant standard mode and then respond like standard S7-300 modules.

Обзор


  • Digital inputs for the fail-safe SIMATIC S7 systems
  • For connecting:
    • Switches and 2-wire proximity switches
    • Sensors according to NAMUR and mechanical contacts, also for signals from hazardous areas
  • With integral safety functions for fail-safe operation
  • Can be used in fail-safe operation
    • Centrally: with S7-31xF-2 DP
    • Distributed in ET 200M: with SIMATIC IM 151-7 F-CPU, S7-31xF-2 DP, S7-416F-2 and S7-400F/FH
  • In standard operation can be used in the same way as S7-300 modules

Дизайн



Failsafe digital input modules have the following mechanical features:

  • Compact configuration:
    The rugged plastic housing contains
    • Green input signal status LEDs
    • Green LED for indicating safety mode
    • Red group fault LED
    • Slot for front connector protected by the front cover
    • Labeling area on the front cover
  • Easy installation:
    Installed in the same way as the other ET 200M I/O modules
  • User-friendly wiring via front connector

Note:

Cable guide 6ES7 393-4AA10-0AA0 is required in order to operate 6ES7 326-1RF00-0AB0 failsafe digital input modules in hazardous areas.

Функции



Failsafe digital input modules convert the levels of the external digital signals from the process into the internal signal level of the failsafe SIMATIC S7 CPUs.

The safety functions required for failsafe operation are integrated in the modules.

Технические данные



Order number

6ES7326-1RF01-0AB0

6ES7326-1BK02-0AB0

SM326, 8DE, DC24V, FAILSAFE

SM326, F-DI 24 X DC24V, FAILSAFE

General information

 

 

Product type designation

F-DI 8x24VDC Namur

Supply voltage

 

 

Rated value (DC)

24 V

Input current

 

 

from load voltage L+ (without load), max.

160 mA

450 mA

from backplane bus 5 V DC, max.

90 mA

100 mA

Encoder supply

 

 

Number of outputs

8

4; Isolated

Type of output voltage

8.2 V DC

Output current

 

 

  • ● Rated value

400 mA

Power loss

 

 

Power loss, typ.

10 W

Digital inputs

 

 

Number of digital inputs

8

24

Number of simultaneously controllable inputs

 

 

all mounting positions

 

 

  • — up to 40 °C, max.

8

24

  • — up to 60 °C, max.

8

24; (at 24 V) or 18 (at 28.8 V)

Input voltage

 

 

  • ● Type of input voltage

DC

DC

  • ● Rated value (DC)

24 V

  • ● for signal "0"

-30 to +5V

  • ● for signal "1"

+11 to +30V

Input current

 

 

  • ● for signal "0", max. (permissible quiescent current)

0.35 to 1.2 mA

2 mA

  • ● for signal "1", typ.

2.1 to 7 mA

10 mA

Input delay (for rated value of input voltage)

 

 

for standard inputs

 

 

  • — at "0" to "1", max.

3.4 ms

  • — at "1" to "0", max.

3.4 ms

for NAMUR inputs

 

 

  • — at "0" to "1", max.

1.2 to 3 ms

  • — at "1" to "0", max.

1.2 to 3 ms

Cable length

 

 

  • ● shielded, max.

200 m

200 m

  • ● unshielded, max.

100 m

100 m

Encoder

 

 

Connectable encoders

 

 

  • ● 2-wire sensor

Yes; if short-circuit test is deactivated

  • — permissible quiescent current (2-wire sensor), max.

2 mA

Interrupts/diagnostics/status information

 

 

Alarms

 

 

  • ● Diagnostic alarm

Yes; Parameterizable

Yes

Diagnostic messages

 

 

  • ● Diagnostic information readable

Yes

Ex(i) characteristics

 

 

Module for Ex(i) protection

Yes

Maximum values of input circuits (per channel)

 

 

  • ● Co (permissible external capacity), max.

3 µF

  • ● Io (short-circuit current), max.

13.9 mA

  • ● Lo (permissible external inductivity), max.

80 mH

  • ● Po (power of load), max.

33.1 mW

  • ● Uo (output no-load voltage), max.

10 V

  • ● Um (fault voltage), max.

60V DC/30V AC

  • ● Ta (permissible ambient temperature), max.

60 °C

60 °C

Potential separation

 

 

Potential separation digital inputs

 

 

  • ● between the channels

Yes

Yes

  • ● between the channels, in groups of

12

  • ● between the channels and backplane bus

Yes

Yes

  • ● between the channels and the power supply of the electronics

Yes

Isolation

 

 

Isolation tested with

500V DC/350V AC

Standards, approvals, certificates

 

 

Highest safety class achievable in safety mode

 

 

  • ● acc. to DIN VDE 0801

AK 6

  • ● acc. to EN 954

Cat. 4

  • ● SIL acc. to IEC 61508

SIL 2 (single-channel), SIL 3 (two-channel)

SIL 3

Use in hazardous areas

 

 

  • ● Test number KEMA

99 ATEX 2671 X

Connection method

 

 

required front connector

1x 40-pin

40-pin

Dimensions

 

 

Width

80 mm

80 mm

Height

125 mm

125 mm

Depth

120 mm

120 mm

Weights

 

 

Weight, approx.

482 g

442 g