Brand:Siemens Item No.:6AG1326-1RF01-4AB0 Product Origin:Germany Product Dimensions:80 × 125 × 120 mm Product Weight:0.560 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Siemens 6AG1326-1RF01-4AB0 Digital Input Module is a specialized SIPLUS safety module for the SIMATIC S7-300 platform. It belongs to the SM 326F Safety Integrated family and is designed specifically for fail-safe acquisition of NAMUR signals.
Unlike a conventional S7-300 digital input module, the 6AG1326-1RF01-4AB0 is intended for safety-related applications in which the input signal itself forms part of a safety function. The module provides 8 fail-safe inputs, allowing compatible NAMUR sensors and mechanical contacts to be monitored by an S7 F-system.
The module is based on 6ES7326-1RF01-0AB0. Siemens documentation describes the SM 326F family as suitable for connecting switches, 2-wire proximity switches and NAMUR sensors, including signals from hazardous areas. The modules incorporate safety functions for fail-safe operation and can be deployed centrally or in suitable ET 200M distributed configurations.
A major characteristic of the 6AG1326-1RF01-4AB0 is its environmental design. The module uses conformal coating, helping protect the electronics against condensation as well as chemically, biologically and mechanically active substances. This makes it suitable for industrial environments where standard control-room equipment may require additional environmental protection.
The module uses a 24 V DC supply and requires a 40-pole front connector. Its digital input circuits are designed around NAMUR technology, making it especially appropriate for process instrumentation and hazardous-area applications where NAMUR sensors are commonly used.
The module's safety capability is another important consideration. It can be applied in safety systems targeting Category 4, SIL 3 and Performance Level e, provided that the entire safety-related control system, wiring, sensors, diagnostics and application software satisfy the relevant requirements. The module itself should not be interpreted as independently establishing these safety levels.
The supplied dimensions are 80 × 125 × 120 mm, while the user-specified weight is 0.560 kg (1.23 lb). This corresponds to the substantial S7-300 module format while providing specialized fail-safe NAMUR functionality.
For process plants, machinery and other safety-oriented installations requiring NAMUR signal acquisition, the 6AG1326-1RF01-4AB0 offers a combination of S7-300 integration, fail-safe processing, NAMUR compatibility and SIPLUS environmental protection.
Technical Specifications
Specification
Details
Product Model
Siemens 6AG1326-1RF01-4AB0
Product Type
SIPLUS S7-300 SM 326F DI8 NAMUR Digital Input Module
Product Family
SIPLUS S7-300 SM 326F Safety Integrated
Base Module
6ES7326-1RF01-0AB0
Safety Function
Fail-Safe Digital Input
Number of Digital Inputs
8
Input Technology
NAMUR
Rated Supply Voltage
24 V DC
Permissible Supply Voltage
20.4–28.8 V DC
Maximum Supply Current
160 mA
Backplane Bus Current
Up to 90 mA
Input Configuration
Configurable
Sensor Type
NAMUR sensors, suitable 2-wire proximity switches and mechanical contacts
Fail-Safe Operation
Yes
Safety Category
Up to Category 4, depending on complete system
Safety Integrity
Up to SIL 3, depending on complete system
Performance Level
Up to PL e, depending on complete system
Signal Exchange Delay
Approximately 1.2–3.0 ms
Diagnostic Functions
Yes
Diagnostic Alarm
Yes
Front Connector
1 × 40-pole
Conformal Coating
Yes
Operating Temperature
0°C to +60°C
Environmental Protection
Suitable for demanding industrial environments
Hazardous-Area Signal Capability
NAMUR / intrinsically safe interface applications
Width
80 mm
Height
125 mm
Depth
120 mm
Dimensions
80 × 125 × 120 mm
Weight
0.560 kg
Weight in Pounds
1.23 lb
PLC Platform
Siemens S7-300 / S7 F-Systems
Application
Fail-Safe NAMUR Signal Acquisition
Recommended Related Models
Model
Product Type
Main Function
Siemens 6ES7326-1RF01-0AB0
S7-300 SM 326F DI8 NAMUR
Standard fail-safe NAMUR digital input
Siemens 6AG1326-1RF01-4AB0
SIPLUS SM 326F DI8 NAMUR
SIPLUS fail-safe NAMUR input with conformal coating
Siemens 6AG1326-1BK02-2AB0
SIPLUS SM 326F DI24
24-channel fail-safe 24 V DC digital input
Siemens 6AG1326-1BK02-2AY0
SIPLUS SM 326F DI24
Fail-safe 24 V DC digital input with enhanced environmental characteristics
Siemens 6ES7336-1HE00-0AB0
S7-300 SM 336
Fail-safe analog input
Siemens 6AG1336-1HE00-2AB0
SIPLUS SM 336
SIPLUS fail-safe analog input
Popular Related Models
For Siemens S7-300 safety and process automation applications, the following models are relevant:
Siemens 6ES7326-1RF01-0AB0 – Standard SM 326F DI8 NAMUR fail-safe input module
Siemens 6AG1326-1RF01-4AB0 – SIPLUS SM 326F DI8 NAMUR with conformal coating
Siemens 6AG1326-1BK02-2AB0 – SIPLUS SM 326F DI24 fail-safe digital input module
Siemens 6AG1326-1BK02-2AY0 – SIPLUS SM 326F DI24 environmental-resistant variant
Siemens 6ES7336-1HE00-0AB0 – S7-300 SM 336 fail-safe analog input module
Siemens 6AG1336-1HE00-2AB0 – SIPLUS SM 336 fail-safe analog input module
Applications
The Siemens 6AG1326-1RF01-4AB0 is a SIPLUS S7-300 SM 326F DI8 NAMUR fail-safe digital input module designed for safety-related signal acquisition in SIMATIC S7 F-systems.
The module is based on 6ES7326-1RF01-0AB0 and provides 8 fail-safe NAMUR digital inputs for 24 V DC applications. It is specifically designed for connecting suitable NAMUR sensors, mechanical contacts and signals originating from hazardous areas. Its integrated safety functions allow it to be used in fail-safe applications up to Category 4 according to EN 954-1, SIL 3 according to IEC 61508, and Performance Level e according to ISO 13849 when the complete safety system is appropriately engineered.
Typical applications include:
Fail-safe NAMUR sensor monitoring
Hazardous-area signal acquisition
Process instrumentation
Chemical and petrochemical plants
Oil and gas automation
Safety-related machine control
Emergency-stop and interlock monitoring
Mechanical contact monitoring
Proximity sensor applications
S7 F-system safety applications
ET 200M distributed safety systems
Industrial plants with chemically active environments
The module is particularly useful when a safety PLC must process NAMUR signals from field equipment while maintaining galvanic and functional separation appropriate to the safety architecture.
Advantages
1. Fail-Safe NAMUR Inputs
The 6AG1326-1RF01-4AB0 provides 8 fail-safe digital inputs specifically designed for NAMUR applications, making it suitable for safety-related monitoring of compatible sensors and mechanical contacts.
2. Safety Integrity up to SIL 3
When correctly integrated into a suitable safety system, the module supports safety applications up to SIL 3, Category 4 and Performance Level e. The actual achieved safety level depends on the complete system design rather than the module alone.
3. Suitable for Hazardous-Area Signals
The module can process signals from suitable sensors located in hazardous areas through an appropriately designed intrinsically safe interface arrangement. This makes it relevant to process industries where conventional digital inputs may not be sufficient.
4. SIPLUS Conformal Coating
The electronic assembly features conformal coating, providing additional resistance to condensation and chemically, biologically and mechanically active environmental influences.
5. Wide Industrial Environmental Compatibility
The module is designed for 0°C to +60°C operation and is intended for applications involving demanding environmental conditions.
6. 24 V DC Technology
The module operates with a nominal 24 V DC supply, making it compatible with the standard control voltage widely used in industrial automation.
7. Integrated Diagnostic Functions
Diagnostic capabilities help identify faults affecting input channels, sensor circuits and module operation, simplifying maintenance and troubleshooting.
8. S7-300 Safety System Integration
The module can be used centrally with suitable S7-300 F CPUs or distributed through compatible ET 200M configurations, providing flexibility for safety-system architecture.
Technical FAQs
1. What is the Siemens 6AG1326-1RF01-4AB0?
The Siemens 6AG1326-1RF01-4AB0 is a SIPLUS S7-300 SM 326F DI8 NAMUR fail-safe digital input module with 8 digital NAMUR inputs for SIMATIC S7 F-system applications.
2. How many digital inputs does the module provide?
It provides 8 fail-safe digital inputs.
3. What type of sensors can be connected?
The module is designed for NAMUR sensors, suitable 2-wire proximity switches and mechanical contacts. It can also process suitable signals associated with hazardous-area instrumentation when the required interface and safety conditions are met.
4. Is the module suitable for safety applications?
Yes. It is specifically designed for fail-safe applications and can support systems up to Category 4, SIL 3 and Performance Level e, subject to the complete safety system design and applicable configuration requirements.
5. Can it be used with hazardous-area signals?
Yes. The 6AG1326-1RF01-4AB0 is designed for applications involving NAMUR signals and hazardous-area instrumentation. Appropriate intrinsically safe barriers or interfaces and the complete approved system architecture must be used.
6. What is the nominal supply voltage?
The module uses a nominal 24 V DC supply, with the specified permissible supply range of 20.4 to 28.8 V DC.
7. What is the operating temperature range?
The specified operating temperature range is approximately 0°C to +60°C.
8. Does the module have conformal coating?
Yes. The SIPLUS module features conformal coating, providing additional environmental protection for the electronics.
9. What connector is required?
The module requires one 40-pole front connector for field wiring.
10. What is the difference between 6AG1326-1RF01-4AB0 and 6AG1326-1BK02-2AB0?
The two modules belong to the SIPLUS SM 326F family but serve different input applications. The 6AG1326-1RF01-4AB0 provides 8 fail-safe NAMUR inputs, while the 6AG1326-1BK02-2AB0 provides 24 fail-safe digital inputs for conventional 24 V DC signals. The RF01 model is therefore particularly relevant to NAMUR and hazardous-area instrumentation.
