SIEMENS S7-300 SM 326 F digital output modules – Safety Integrated

SM 326 F digital output modules – Safety IntegratedSM 326 F digital output modules - Safety Integrated

  • Digital outputs for the fail-safe SIMATIC S7 systems
  • Two versions (1 x current sourcing, 1 x current sinking)
  • For connecting solenoid valves, DC contactors and indicator lights
  • With integral safety functions for fail-safe operation
  • Can be used in fail-safe operation
    • Centrally: with S7-31xF DP, S7-31xF PN/DP
    • Distributed in ET 200M: with SIMATIC IM 151-7 F-CPU, S7-31xF-2 DP, S7-41xF-2 and S7-400F/FH

Application

Fail-safe digital output modules are used centrally with SIMATIC S7-31xF-2 DP, and in the ET 200M distributed I/O device together with SIMATIC IM 151-7 F-CPU, S7-31xF-2 DP, S7-416F-2 and S7-400F/FH.

The modules are, for example, suitable for connecting solenoid valves, DC contactors and indicator lights.

In the case of the SM 326 F-DO 10 x DC 24V/2A PP (6ES7 326-2BF10-0AB0), the function “Keep last valid value” can be used optionally in safety mode too. Together with the diagnostics capability of the module, this can be used for cost-optimized implementation of applications in, for example, the area of fire and gas alarm systems (in accordance with EN 54-2/-4 or NFPA72).


Design

Fail-safe digital output modules have the following mechanical features:

  • Compact design:
    • 2 connections per output for single-channel or redundant actuator control
    • Green LEDs for indicating signal states at the outputs
    • Green LED for indicating safety operation
    • Red LED for group error display
    • Connection options for the front connector, protected behind the front door
    • Labeling field on the front door
  • Simple installation:
    installation is the same as for the other I/O modules of the ET 200M
  • User-friendly wiring via the front connector
  • Module width:
    • SM 326 F-DO 10 x DC 24V/2A PP (6ES7 326-2BF10-0AB0) single-width (40mm)
    • SM 326 F-DO 8 x DC 24V/2A PM (6ES7 326-2BF41-0AB0) double-width (80 mm)

Function

Failsafe digital output modules convert the internal signal level of the failsafe SIMATIC S7 CPUs into the external signal levels required for the process. The safety functions required for failsafe operation are integrated in the modules.

Product No. / Product Description SM 326 F digital output modules – Safety Integrated Ordering data
6ES7326-2BF10-0AB0
SIMATIC S7, DIGITAL OUTPUT SM326, F-DO10 X DC24V/2A PP, FAILSAFE DIGITAL OUTPUTS FOR SIMATIC S7F SYSTEMS WITH DIAGNOST. INTERRUPT, LVV, UP TO CATEGORY 4 (EN954-1)/ SIL3 (IEC61508)/PLE (ISO13849), 1 X 40 PIN
6ES7326-2BF41-0AB0
SIMATIC S7, DIGITAL OUTPUT SM 326, F-DO 8 X DC 24V/2A PM FAILSAFE DIGITAL OUTPUTS P-M SWITCHING UP TO CATEGORY 4 (EN954-1)/ SIL3 (IEC61508)/PLE (ISO13849), 1 X 40 PIN

Technical specifications

Article number

6ES7326-2BF10-0AB0

6ES7326-2BF41-0AB0

SM326, F-DO10XDC24V/2A PP, FAILSAFE

SM 326, F-DO 8 X DC 24V/2A PM

Supply voltage

Rated value (DC)

24 V; 1L+

24 V; 1L+

Load voltage L+

  • ● Rated value (DC)

24 V; 2L+, 3L+

24 V; 2L+, 3L+

Input current

from supply voltage 1L+, max.

100 mA

75 mA

from load voltage 2L+ (without load), max.

100 mA

100 mA

from load voltage 3L+ (without load), max.

100 mA

100 mA

from backplane bus 5 V DC, max.

100 mA

100 mA

Power loss

Power loss, typ.

6 W

12 W

Digital outputs

Number of digital outputs

10

8

Short-circuit protection

Yes

Yes

Limitation of inductive shutdown voltage to

L+ (-33 V)

Switching capacity of the outputs

  • ● on lamp load, max.

5 W

5 W

Output voltage

  • ● for signal “1”, min.

L+ (-1.0 V)

L+ (-1.0 V)

Output current

  • ● for signal “1” rated value

2 A

2 A

  • ● for signal “1” permissible range for 0 to 40 °C, min.

7 mA

7 mA

  • ● for signal “1” permissible range for 0 to 40 °C, max.

2.4 A

2 A; 2 A for horizontal installation, 1 A for vertical installation

  • ● for signal “1” permissible range for 40 to 60 °C, min.

7 mA

7 mA

  • ● for signal “1” permissible range for 40 to 60 °C, max.

2.4 A

1 A; for horizontal installation

  • ● for signal “0” residual current, max.

0.5 mA

0.5 mA

Switching frequency

  • ● with resistive load, max.

25 Hz

30 Hz

  • ● with inductive load, max.

25 Hz

2 Hz

  • ● on lamp load, max.

10 Hz

10 Hz

Total current of the outputs (per group)

horizontal installation

  • — up to 40 °C, max.

10 A

7.5 A

  • — up to 60 °C, max.

6 A

5 A

vertical installation

  • — up to 40 °C, max.

5 A

5 A

Cable length

  • ● shielded, max.

1 000 m

200 m; 200 m for SIL3, AK 6, Cat 4

  • ● unshielded, max.

600 m

200 m

Interrupts/diagnostics/status information

Alarms

  • ● Diagnostic alarm

Yes

Yes; Parameterizable

Diagnostic messages

  • ● Diagnostic information readable

Yes

Yes

Diagnostics indication LED

  • ● Fail-safe operation

Yes

Yes

  • ● Group error SF (red)

Yes

Yes

Potential separation

Potential separation digital outputs

  • ● between the channels

Yes

Yes

  • ● between the channels, in groups of

5

4

  • ● between the channels and backplane bus

Yes

Yes

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

Yes

Yes

Isolation

Isolation tested with

370V for 1 min

500 V DC/350 V AC

Highest safety class achievable in safety mode

  • ● acc. to DIN VDE 0801

AK 5 and 6

  • ● acc. to EN 954

Cat. 4

Cat. 4

  • ● SIL acc. to IEC 61508

SIL 3

SIL 3

Connection method

required front connector

40-pin

40-pin

Dimensions

Width

40 mm

80 mm

Height

125 mm

125 mm

Depth

120 mm

120 mm

Weights

Weight, approx.

330 g

465 g