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SIEMENS · PRODUCT DETAILS

6ES7326-1RF00-0AB0

SIMATIC S7 SM 326 Fail-safe NAMUR Digital Input Module

8 DI · 24 V DCSIL 3 / PL eNAMUR

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Official order code verified

PRODUCT SNAPSHOT

A fail-safe digital input module developed for SIMATIC S7F safety systems. Eight isolated NAMUR inputs acquire process signals from compatible sensors and can be evaluated as eight single-channel inputs or four two-channel safety inputs.

The module combines channel diagnostics, diagnostic alarms and status indication with safety operation up to Category 4, SIL 3 and Performance Level e when engineered and wired according to the applicable safety documentation.

DIRECT CONTACT

☎ +86 17359287459 ✉ sales9@apterpower.com

DIAGNOSTICS · PROTECTION · COMMISSIONING

Safety-focused signal acquisition with clear service guidance

◆ Diagnostic protection

Diagnostic alarms and readable diagnostic information support rapid fault localization.
Red group-fault indication and fail-safe operating status provide clear module-level feedback.
Reverse-polarity protection is provided for the 24 V DC supply.
Galvanic isolation separates channels, backplane bus and electronics supply.

◆ Installation & upgrade

Install the module in an approved SIMATIC S7 / ET 200M fail-safe station using a 40-pin front connector.
Select one-channel or two-channel evaluation in the F-system engineering configuration.
Verify NAMUR sensor limits, shield routing and proof-test requirements before commissioning.
For replacement planning, compare wiring, safety signature and firmware/project compatibility with the installed revision.

OFFICIAL TECHNICAL DATA

Product type
SM 326 fail-safe digital input

Digital inputs
8 NAMUR inputs

Rated supply
24 V DC

Evaluation
8 single-channel / 4 two-channel

Safety class
Up to SIL 3 / PL e

Ex protection
ATEX 99 ATEX 2671 X

Cable length
200 m shielded / 100 m unshielded

Operating temperature
Up to 60 °C

Technical data is based on the official Siemens product record for this exact order code. Installation and safety validation must follow the applicable Siemens manuals.

BRAND STRENGTH · APPLICATION MAP

Built for dependable safety automation

Siemens brand characteristics

Integrated engineering across SIMATIC controllers, distributed I/O and safety systems.
Documented diagnostic behavior supports structured commissioning and maintenance.
Long lifecycle support and defined migration paths for established automation platforms.
Broad certification portfolio for machine, process and infrastructure projects.

Application fields

Emergency shutdown and burner-management input monitoring.
Chemical, pharmaceutical and water-treatment process safety.
NAMUR sensor acquisition in hazardous-area instrumentation loops.
Retrofit and service of SIMATIC S7F / ET 200M safety installations.

RECOMMENDED MODELS

SIEMENS

6ES7326-1RF01-0AB06ES7326-2BF10-0AB06ES7326-2BF41-0AB06ES7326-2BF01-0AB06ES7326-2BF40-0AB06ES7136-6BA00-0CA06ES7136-6DB00-0CA06ES7136-6DC00-0CA06ES7136-6RA00-0BF06ES7136-6PA00-0BC06ES7138-4FA05-0AB06ES7138-4FB04-0AB06ES7138-6BA01-0BA06ES7138-6CB00-0CA06ES7138-6DB00-0BB16ES7195-7HD10-0XA06ES7153-2BA10-0XB06ES7153-4BA00-0XB06ES7317-6FF04-0AB06ES7416-5FS07-0AB0

BECKHOFF

EL1904EL2904EL6910EL6930EL6900EL1918EL2911EP1908-0002EP1957-0022EP2338-0002EK1960EK1914KL1904KL2904KL6904TwinSAFE SCAX5805AX5806CX9020-0111CX5130-0125

QUOTE · SERVICE & POLICY

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