Features:
- Twenty-four 24 V DC fail-safe digital inputs
- Two isolated twelve-channel input groups
- Four isolated sensor-supply outputs
Siemens
6ES7326-1BK02-0AB0 is the SM 326 input module that brings fail-safe field states into a SIMATIC S7 F-system.
Its grouped input structure separates twelve channels from the other twelve while preserving an electrical boundary to the backplane.
Module diagnostics, a diagnostic alarm and the SF indicator expose faults that affect the input assembly or its field circuits.
The Siemens 6ES7326-1BK02-0AB0 SM 326 Fail-Safe Digital Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7326-1BK02-0AB0 SM 326 Fail-Safe Digital Input Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Input Grouping
- Channel count: Twenty-four digital inputs accept 24 V DC field states.
- Group structure: The inputs are divided into two groups of twelve channels.
- Electrical separation: Each twelve-channel group is isolated from the other group and from the backplane.
- Connector: Field wiring terminates through the required 40-pin front connector.
Field-Circuit Power
- Supply outputs: Four isolated outputs provide sensor power for the input circuits.
- Output rating: Each documented sensor-supply path is rated for 400 mA.
- Two-wire sensors: Two-wire operation is supported when the short-circuit test is disabled.
- Quiescent current: The permitted two-wire sensor quiescent current is 2 mA maximum.
Fault Reporting
- Diagnostic data: The controller can read module diagnostic information.
- Alarm behavior: A diagnostic alarm can be generated for reported module conditions.
- Status display: The SF indicator reports a fail-safe or group fault at module level.
- Safety capability: The documented maximum classification reaches Category 4, PL e and SIL 3.
Signal Connections
- Shielded wiring: Input circuits may extend to 200 m with shielded cable.
- Unshielded wiring: The documented maximum is 100 m for unshielded cable.
- Logical zero: Input voltage from -30 to +5 V DC is evaluated as signal 0.
- Logical one: Input voltage from +11 to +30 V DC is evaluated as signal 1.