Siemens 6ES7326-2BF10-0AB0 SM 326 F-DO10x24V DC/2A PP Safety Module

Product Brief – Fail-Safe Digital Output Module

6ES7326-2BF10-0AB0 is a fail-safe digital output module for SIMATIC S7-300F and S7-400F systems. It provides 10 high-current outputs (2A each) for safety-related applications. This SM 326 F-DO10x24V DC/2A PP meets SIL3, PLe, and Category 4 standards. It is the core component for building emergency shutdown and safety interlock systems.

Oiltech Controls’s Insight

• Safety integration: This module is designed for fail-safe CPU operation. Always pair it with a certified F-CPU to achieve SIL3.
• Wiring practice: Use shielded cables for long runs up to 1000m. This reduces noise and prevents false trips.
• Load management: The total current per group is limited to 10A (horizontal, 40°C). Plan your load distribution carefully.
• Diagnostic value: The diagnostic alarm and readable error codes simplify troubleshooting. Use them to identify short circuits or wire breaks.

Technical Specifications

• Brand: Siemens
• Model: 6ES7326-2BF10-0AB0
• Type: SM 326 F-DO10x24V DC/2A PP
• Outputs: 10 digital, fail-safe, 2A per channel
• Rated voltage: 24 V DC (1L+ for logic, 2L+/3L+ for loads)
• Short-circuit protection: Yes, built-in
• Switching frequency: 25 Hz (resistive/inductive), 10 Hz (lamp load)
• Total current (horizontal, 40°C): 10 A max
• Cable length: 1000 m (shielded), 600 m (unshielded)
• Diagnostic alarm: Yes, with readable diagnostic info
• Safety approvals: SIL3 (IEC 61508), PLe (ISO 13849), Cat.4 (EN 954)
• Weight: approx. 330 g

Compatible Systems

• Primary: SIMATIC S7-300F, S7-400F fail-safe CPUs
• Applications: Emergency stop circuits, safety interlocks, burner management
• Environment: Suitable for horizontal and vertical mounting (derating applies)

Why Buy From Oiltech Controls?

• 15+ years focused on industrial automation spares.
• Worldwide shipping via FedEx, UPS, or DHL with full tracking.
• Tested surplus and refurbished options, fully verified.
• 12-month warranty on all products.
• Pre-shipment verification by our technical engineers.
• We support obsolete and legacy control systems.

Professional FAQ – Expert Buying Guide

• Q1: Can I use this module with a standard non-failsafe CPU?
  A: No. It requires a fail-safe CPU (e.g., 315F-2DP) to activate safety functions. In standard mode, it works as a normal output but without SIL rating.
• Q2: What is the difference between 1L+, 2L+, and 3L+?
  A: 1L+ powers the internal logic (max 100mA). 2L+ and 3L+ supply the output channels (two isolated groups of 5). You need separate power supplies for load and logic for safety isolation.
• Q3: How do I interpret the group error (SF) LED?
  A: A red SF indicates a fault. Read the diagnostic buffer via STEP 7 to identify specific issues like short circuit, overtemperature, or missing load voltage.
• Q4: What is the maximum cable length for safety-related signals?
  A: 1000m shielded is permissible. For unshielded, limit to 600m. For SIL3 applications, we strongly recommend shielded cables to maintain signal integrity.
• Q5: What current derating applies for vertical installation?
  A: In vertical mounting, the max total current is 5A (all temperatures). Plan your loads accordingly; for high currents, use horizontal mounting with adequate spacing.

Shipping & Warranty

• Dispatch: 24-28 hours after order confirmation.
• Carriers: FedEx, UPS, DHL – choose your preferred option.
• Warranty: 12 months covering functional defects.
• All shipments include tracking and insurance.

Contact Information
Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923

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