Siemens 6AG2526-2BF00-1AB0 SIPLUS S7-1500 F-DQ 8x24VDC 2A T1 RAIL Fail-Safe Digital Output Module

Where It Excels in Industrial Use

• Railway automation systems requiring fail-safe 24 V DC digital output control.
• Rolling-stock applications where safety-related actuators must be controlled through PROFIsafe.
• Emergency shutdown, interlocking, braking, door-control, and protective-device applications.
• S7-1500 and ET 200MP safety systems requiring eight high-current fail-safe digital outputs.
• Industrial machinery requiring diagnostics for output supply, wire break, short circuit, and group faults.
• Harsh railway environments where conformal coating and extended temperature capability are required.

Key Strengths at a Glance

• 8 fail-safe digital outputs for 24 V DC loads.
• Rated output current of 2 A per channel.
• PPM output design with current-sourcing and current-sinking capability.
• Safety functions up to PL e according to ISO 13849-1 and SIL 3 according to IEC 61508.
• PROFIsafe communication within an S7-1500 safety architecture.
• Integrated diagnostics for supply voltage, wire break, short circuit, and group errors.
• Diagnostic alarms and channel-status indication.
• Output channels are electrically isolated from the backplane bus.
• Conformal coating for SIPLUS extreme RAIL applications.
• Operating temperature from -30 °C to +60 °C, with +70 °C permitted for 10 minutes under the specified ST1/2 conditions.

Technical FAQs

1. What is the function of the 6AG2526-2BF00-1AB0?

The 6AG2526-2BF00-1AB0 is a fail-safe digital output module for the S7-1500 and ET 200MP architecture. It provides eight 24 V DC outputs for safety-related control of field actuators and communicates safety information through PROFIsafe.

2. How many fail-safe outputs does the module provide?

The module provides eight fail-safe digital outputs. Each output can deliver a rated current of 2 A under the specified operating conditions.

3. What is the rated supply voltage?

The module operates from a nominal 24 V DC supply. The permissible supply-voltage range is 19.2 to 28.8 V DC.

4. What does PPM output technology mean for this module?

PPM refers to push-pull output technology. The output stages can source or sink current according to the configured and connected circuit, providing flexibility for controlling 24 V DC loads.

5. What safety level can the 6AG2526-2BF00-1AB0 support?

The module is suitable for safety functions up to Performance Level e according to ISO 13849-1 and SIL 3 according to IEC 61508. The achievable safety level depends on the complete safety architecture, configuration, application, and validation.

6. What diagnostic functions are available?

The module provides monitoring of the supply voltage, wire-break detection, short-circuit detection, and group-error diagnostics. Diagnostic alarms and status indications are also available to assist with fault identification.

7. Can the module be used with PROFIsafe?

Yes. The 6AG2526-2BF00-1AB0 is a fail-safe I/O module designed for PROFIsafe communication. It must be integrated with a compatible fail-safe CPU and configured using the appropriate Siemens safety engineering environment.

8. Can the outputs switch inductive loads?

Yes. Inductive loads can be connected within the specified electrical limits. The permitted switching frequency depends on the load characteristics, with a substantially lower maximum frequency specified for inductive loads than for resistive loads.

9. What is the maximum total output current?

The maximum total current depends on installation orientation and ambient temperature. For horizontal installation, the total current can reach 16 A up to 40 °C and is limited to 8 A up to 60 °C. Vertical installation has a lower total-current limit.

10. What environmental conditions distinguish the SIPLUS RAIL version?

The module has conformal coating and is designed for demanding railway environments. Its specified operating range is -30 °C to +60 °C, with +70 °C permitted for 10 minutes under the applicable ST1/2 conditions.