Product Overview

The 6ES7326-2BF01-0AB0 is a specialized safety-related electronic module within the SIMATIC S7-300 family, engineered specifically for fail-safe automation. Functioning as an SM 326 F-DO unit, it provides 10 high-current digital outputs designed to drive actuators in environments where functional safety is mandatory. This module interfaces seamlessly with S7 F-systems, allowing for the execution of safety-related tasks such as emergency shutdowns or machine isolation. By utilizing internal diagnostic routines, the hardware can detect cross-circuits, short circuits, and internal malfunctions, ensuring that the system reverts to a safe state in the event of a fault.

Hardware Configuration and Technical Metrics

• Output Channels: 10 Failsafe Digital Outputs

• Nominal Voltage: 24V DC

• Output Current per Channel: 2.0 Amperes

• Safety Integrity Level: Capable of achieving SIL 3 (IEC 61508) or PLe (ISO 13849)

• Power Dissipation: Approximately 12W maximum

• Switching Frequencies: 10Hz (Resistive/Lamp loads), 2Hz (Inductive loads)

• Front Connection: 40-pin connector requirement

• Galvanic Isolation: Optocoupler isolation between backplane and load

• Unit Weight: 0.95 kg

• Chassis Dimensions: 2.5 cm x 5.1 cm x 83.8 cm

Safety Implementation and Machine Utility

The robust electrical profile of the 6ES7326-2BF01-0AB0 makes it suitable for high-integrity control loops across various heavy industries. Primary deployment scenarios include:

• Safety Actuator Control: Driving solenoid valves, contactors, and signaling devices that require a high current (up to 2A) to operate safely.

• Emergency Stop Integration: Managing the final output elements of a safety circuit to ensure power is reliably removed from hazardous machinery.

• Burner Management Systems (BMS): Operating fuel shut-off valves in industrial furnaces where fail-to-safe logic is critical.

• Hydraulic and Pneumatic Isolation: Controlling safety-rated directional valves on presses or stamping machines to prevent unintended movement.

• Process Plant Protection: Acting as the executive output layer for High Integrity Pressure Protection Systems (HIPPS) and other critical safety instrumented functions.