Siemens 6ES7136-6BA00-0CA0 ET 200SP Safety Input Module

The Siemens 6ES7136-6BA00-0CA0 is a fail-safe digital input module for the ET 200SP distributed I/O system. Designated as F-DI 8x24VDC HF (High Feature), this module provides 8 channels for 24V DC safety-related inputs. It is certified for use in safety applications up to SIL3 according to IEC 61508 and PL e according to ISO 13849-1. The module integrates seamlessly with SIMATIC S7-1200, S7-1500, and other F-CPUs via PROFIsafe.

Technical Specifications

The module has 8 fail-safe digital inputs, each channel can be configured as a single channel (1oo1) with test pulses or dual channel (1oo2) equivalent. Input voltage range is 19.2V to 28.8V (type 3). Input delay adjustable from 0.1 ms to 20 ms. The module provides parameterizable short-circuit and cross-circuit detection. Diagnostic alarms include channel fault, wire break (for current sourcing sensors), and sensor supply voltage monitoring. The module includes an internal sensor supply (24V DC, up to 200 mA per group) for powering proximity sensors or safety switches.

Rated supply voltage (L+) is 24V DC (20.4-28.8V) via the ET 200SP backplane. Power consumption from the backplane is 22.5 mA. The module width is 15 mm (standard for ET 200SP). Operating temperature range is -30°C to +60°C. Protection rating IP20.

Key Features

• 8 fail-safe digital inputs, 24V DC

• High Feature (HF) with extended diagnostics

• PROFIsafe communication (F-destination address configurable)

• Parameterizable input delay and sensor supply monitoring

• Single or dual channel configuration per sensor

• Up to SIL3 / PL e safety level

• Built-in sensor supply (24V DC)

• Short-circuit and cross-circuit detection

• Red or black plastic housing (fail-safe identification)

• Compatible with ET 200SP base units Type A0 to A3

Safety Functions

The F-DI module supports all standard safety functions including emergency stop, safety door monitoring, light curtain/barrier evaluation, two-hand control, and enable switches. Each input channel can be assigned to a safety program in the F-CPU. The module performs self-tests and cross-checks. It also supports the use of OSSD outputs (e.g., from light curtains) by interpreting the pulse signal. The passivation and re-integration behavior is configurable.

Integration with ET 200SP

The module mounts on an ET 200SP base unit (e.g., 6ES7193-6BP00-0DA0) and communicates via the backplane bus to the interface module (IM155-6) or directly to a CPU with integrated ET 200SP. PROFIsafe frames are exchanged with the F-CPU over PROFINET or PROFIBUS. Configuration is performed in TIA Portal using the Safety Administration tool. The F-destination address is set via software, not via DIP switches. The module supports firmware updates via the online interface.

Applications

Typical safety applications include machine guarding (safety interlock switches, emergency stop pushbuttons, safety mats), press monitoring, robot cell access control, and conveyor protection. The module is suitable for use in automotive assembly lines, packaging machinery, and material handling systems requiring safety integrity up to SIL3. The ability to connect standard sensors (with test pulse evaluation) and safety-rated devices reduces component variety.

Environmental and Certifications

The 6ES7136-6BA00-0CA0 is certified by TÜV, UL, and CSA for functional safety. It meets CE, UKCA, EAC, and KC standards. Ambient temperature (horizontal mounting) -30°C to +60°C; vertical mounting up to 50°C. Humidity 10-95% non-condensing. Vibration resistance according to IEC 60068-2-6 (2g). The module is rated for pollution degree 2 and overvoltage category II.

Wiring and Installation

Wiring is via the ET 200SP push-in terminal blocks (standard 24V DC sensors connect to inputs X1 to X8). The base unit provides a 24V sensor supply output. Shield connection possible via shield contact plate. The F-DI module must be placed adjacent to a failsafe terminal module (not required for this module as it uses standard base unit). The color of the housing (red) indicates safety component. F-destination address is set via TIA Portal.

Conclusion

The Siemens 6ES7136-6BA00-0CA0 ET 200SP safety input module offers a compact, flexible solution for fail-safe digital signal acquisition. With high diagnostic capability, PROFIsafe integration, and support for up to SIL3/PL e, it is a reliable choice for safety applications in distributed automation systems.