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- 6AG1135-4LB02-7AB0
- Analog Output Module
- Germany
- 15 × 81 × 52 mm
- 0.045 kg
- Xiamen, China
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Product Overview
The Siemens 6AG1135-4LB02-7AB0 SIPLUS ET 200S Analog Output Module is an analog output module used within the SIPLUS ET 200S distributed I/O system. It is intended for automation applications where a PLC needs to transmit analog control values to field devices rather than simple binary ON/OFF signals.
The module is suited to applications involving proportional control, where the output value changes according to the process requirement. Typical examples include sending control references to valve positioners, actuators, regulators, drives, and other analog-input devices.
As part of an ET 200S station, the module works together with the station interface, terminal modules, power components, and the higher-level PLC. The controller determines the required output value, while the analog output module converts that value into the corresponding electrical signal for the connected field device.
The 6AG1135-4LB02-7AB0 is therefore best understood as a field-level signal interface rather than an independent controller. Its value in an automation system comes from integrating analog actuator control into a distributed I/O architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6AG1135-4LB02-7AB0 |
| Product Family | SIPLUS ET 200S |
| Product Type | Analog Output Module |
| Module Function | Analog Signal Output |
| Number of Analog Outputs | 2 |
| Output Type | Analog |
| Signal Application | Analog Actuator / Setpoint Control |
| System Architecture | ET 200S Distributed I/O |
| Module Width | 15 mm |
| Dimensions | 15 × 81 × 52 mm |
| Weight | 0.045 kg |
Product Features
The 6AG1135-4LB02-7AB0 is intended for distributed analog output applications where compact I/O installation and integration with the ET 200S architecture are required.
Key characteristics include:
- SIPLUS ET 200S analog output module
- Two analog output channels
- Designed for distributed I/O applications
- Suitable for proportional control signals
- Compact 15 mm module width
- Suitable for connection to analog field devices
- Integrates with ET 200S interface and terminal components
- Supports centralized PLC control through distributed I/O
- Suitable for industrial process and machine automation
- SIPLUS product construction for demanding industrial environments
- Dimensions of 15 × 81 × 52 mm
- Weight of 0.045 kg
The output configuration should always be matched with the receiving device. Before commissioning, the field device’s signal type, input range, wiring arrangement, and scaling should be checked against the automation program.
Working Principle
The module operates between the PLC’s digital control system and the analog field device.
A typical signal path is:
PLC → ET 200S Interface → 6AG1135-4LB02-7AB0 → Analog Output → Field Device
The PLC calculates or receives a desired process value. This value is transferred through the ET 200S distributed I/O architecture to the analog output module.
The module then generates the corresponding analog electrical output. The connected field device interprets that signal as a command or setpoint.
For example, in a process-control application, the PLC may determine that a control valve should move toward a particular operating position. Instead of using a simple digital command, the analog output can transmit a proportional signal representing the desired position.
The accuracy of the overall control loop depends on more than the output module itself. PLC scaling, module configuration, cable characteristics, receiving-device input range, and grounding or shielding arrangements can all affect the final signal seen by the actuator.
Role in a Distributed Automation System
The 6AG1135-4LB02-7AB0 functions as the analog output interface between an ET 200S station and field-level control equipment.
A typical architecture can be represented as:
SIMATIC PLC → Distributed I/O Network → ET 200S Interface Module → Analog Output Module → Field Actuator
This arrangement allows the analog signal interface to be installed close to the machine or process equipment. Long runs of individual control wiring back to the main PLC cabinet can therefore be reduced.
The module may be used for applications involving:
- Control valve commands
- Analog actuator references
- Process control setpoints
- Regulator inputs
- Machine control signals
- Industrial positioning commands
- Other compatible analog-input devices
The PLC remains responsible for the control logic and process calculations. The ET 200S module handles the physical analog output interface.
Industrial Applications
The module can be applied in distributed automation systems where analog output signals need to be delivered close to the controlled equipment.
| Application | Typical Use |
|---|---|
| Process Automation | Analog control of field devices |
| Valve Control | Sending proportional valve commands |
| Pump Systems | Analog reference signals |
| HVAC Equipment | Actuator and regulator control |
| Water Treatment | Distributed process control |
| Chemical Processing | Analog control-loop outputs |
| Manufacturing Machinery | Machine actuator commands |
| Utility Systems | Analog equipment regulation |
| Industrial Control Cabinets | Local distributed analog I/O |
For a replacement project, the receiving field device should be identified first. An analog output module should not be selected solely because its channel count or physical dimensions appear similar to the original module.
Installation and Maintenance
The module is intended to be installed as part of an ET 200S station. Correct operation depends on the compatibility of the electronic module, interface module, terminal arrangement, power supply, and PLC configuration.
Before installation, technicians should verify the complete module number and the existing station architecture.
Recommended checks include:
- Confirm the complete 6AG1135-4LB02-7AB0 order number.
- Verify compatibility with the existing ET 200S station.
- Check the associated interface module.
- Confirm the correct terminal module.
- Verify the required supply voltage.
- Check the connected field device’s analog input requirements.
- Confirm output-channel addressing in the PLC configuration.
- Verify the configured signal scaling.
- Inspect analog wiring and terminal connections.
- Use suitable shielding where required.
- Check grounding arrangements.
- Test each output channel independently.
- Compare commanded and measured output values.
- Review module diagnostics after commissioning.
If the connected actuator does not respond correctly, measure the actual output at the module and compare it with the value expected from the PLC program. This helps distinguish between an application-program problem, module configuration problem, wiring fault, and field-device fault.
Related Components
The 6AG1135-4LB02-7AB0 normally operates together with several components within an ET 200S installation.
| Component | Function |
|---|---|
| SIMATIC PLC | Executes control logic and calculates output values |
| ET 200S Interface Module | Connects the distributed station to the control system |
| ET 200S Terminal Module | Provides the physical connection for the electronic module |
| ET 200S Power Module | Supplies required field-side power |
| Distributed I/O Bus | Transfers process data between controller and I/O station |
| 24 V DC Power Supply | Provides system and field power |
| Analog Signal Cable | Carries the output signal to the field device |
| Control Valve | Uses analog command for proportional positioning |
| Actuator | Converts the electrical command into mechanical movement |
| Field Controller | Receives and processes the analog reference |
The terminal and interface arrangement is particularly important when replacing an existing ET 200S module. The electronic module should be checked against the existing station configuration before removal of the old component.
Recommended Related Models
The following products can be considered when planning analog output functions within Siemens distributed I/O architectures.
| Model | Product Type | Main Function | Typical Application |
|---|---|---|---|
| Siemens 6AG1135-4LB02-7AB0 | SIPLUS ET 200S Analog Output Module | Analog output control | Distributed actuator applications |
| Siemens 6AG1135-4GB01-2AB0 | SIPLUS ET 200S Analog Output Module | Analog current output | 4–20 mA actuator control |
| Siemens 6AG1135-4FB01-2AB0 | SIPLUS ET 200S Analog Output Module | Analog voltage output | Voltage-controlled devices |
| Siemens 6AG1135-6GB00-7BA1 | SIPLUS ET 200SP Analog Output Module | Analog current output | ET 200SP distributed I/O |
| Siemens 6AG1135-6HB00-2DA1 | SIPLUS ET 200SP Analog Output Module | Analog voltage/current output | Flexible analog control |
| Siemens 6AG1135-6HD00-7BA1 | SIPLUS ET 200SP Analog Output Module | Multi-channel analog output | Higher-density I/O systems |
For an existing ET 200S installation, an ET 200SP module should not be regarded as a direct replacement merely because both products perform analog output functions. The system generation, interface architecture, mounting arrangement, engineering configuration, and terminal technology are different.
Key Advantages
- SIPLUS ET 200S distributed analog output module
- Two analog output channels
- Suitable for proportional field-device control
- Compact 15 mm module width
- Designed for distributed I/O architecture
- Suitable for industrial automation systems
- Integrates with SIMATIC PLC control systems
- Suitable for valve, actuator, regulator, and process-control applications
- Supports local field-level analog signal distribution
- SIPLUS construction for demanding industrial environments
- Dimensions of 15 × 81 × 52 mm
- Weight of 0.045 kg
Technical FAQs
What is the 6AG1135-4LB02-7AB0 used for in an ET 200S station?
It is used to provide analog output channels within an ET 200S distributed I/O station. The PLC supplies the control value, and the module converts that value into the corresponding analog signal for compatible field equipment.
How should the output signal be scaled in the PLC program?
The PLC’s engineering value must correspond correctly to the signal range expected by the receiving device. Incorrect scaling can cause a valve, actuator, or regulator to operate at an unintended position even when the module itself is functioning normally.
What is the most useful measurement when troubleshooting an incorrect analog output?
Measure the actual electrical output at the module terminals and compare it with the value expected from the PLC program. If the module output is correct but the field device receives an incorrect value, attention should shift to the wiring, cable resistance, terminals, grounding, or receiving device.
Can the 6AG1135-4LB02-7AB0 be directly substituted with an ET 200SP analog output module?
Not as a simple plug-and-play replacement. Although both belong to Siemens distributed I/O families, ET 200S and ET 200SP use different system architectures and mounting/interface components. A migration requires checking the complete station configuration and PLC engineering.