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Siemens 6ES7326-1RF00-0AB0 SM 326 Fail-Safe NAMUR Digital Input Module
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
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Overview
- Confirm the engineered one-channel or two-channel input arrangement.
- Use NAMUR sensors and the 40-pin front connector.
- Respect the 200 m shielded or 100 m unshielded input-cable limit.
- Include the diagnostic alarm and SF indication in maintenance procedures.
SIMATIC S7-300 safety I/O
6ES7326-1RF00-0AB0 SM 326 Fail-Safe NAMUR Digital Input Module
Eight-channel NAMUR fail-safe digital input module for SIMATIC S7 F systems.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6ES7326-1RF00-0AB0 |
| Product Type | Fail-safe NAMUR digital input module |
| Core Function | Acquires safety-related NAMUR input signals |
| Compatible Series | SIMATIC S7 F systems |
Input arrangement
Eight one-channel or four two-channel NAMUR inputs.
Safety capability
SIL 2 with one-channel or SIL 3 with two-channel use.
Field wiring
40-pole front connector with shielded cable length up to 200 m.
Product Overview
6ES7326-1RF00-0AB0 is an SM 326 fail-safe NAMUR digital input module with eight 24 V DC inputs for SIMATIC S7 F systems. It accepts NAMUR sensor signals and provides diagnostic signaling for safety-related input circuits.
The module can be configured as eight one-channel inputs or four two-channel inputs; the attainable safety class depends on the circuit architecture.
Key Functions
NAMUR signal acquisition
Eight digital inputs can be arranged as eight one-channel or four two-channel signal paths.
Safety-related processing
Two-channel operation supports SIL 3 under IEC 61508 and performance level e under ISO 13849-1.
Circuit diagnostics
The module provides a diagnostic alarm, fail-safe operation indication and a red SF group-error LED.
Official Specifications
| Rated supply voltage | 24 V DC |
|---|---|
| Maximum load-voltage current | 160 mA without load |
| Maximum backplane current | 90 mA at 5 V DC |
| Encoder supply outputs | 8 outputs at 8.2 V DC |
| Typical power loss | 4.5 W |
| Digital input channels | 8 one-channel or 4 two-channel |
| Signal 0 input current | 0.35–1.2 mA |
| Signal 1 input current | 2.1–7 mA |
| NAMUR transition delay | 1.2–3 ms for both signal directions |
| Maximum shielded cable length | 200 m |
| Maximum unshielded cable length | 100 m |
| Maximum gas-group IIC no-load voltage | 10 V |
| Maximum gas-group IIC short-circuit current | 13.9 mA |
| Maximum gas-group IIC output power | 33.1 mW |
| Maximum permissible external capacitance | 3 µF |
| Maximum permissible external inductance | 80 mH |
| Isolation test voltage | 500 V DC |
| Maximum operating temperature | 60 °C |
| Required front connector | 40-pin |
| Dimensions | 80 × 125 × 120 mm |
Frequently Asked Questions
Can I wire NAMUR sensors directly to 6ES7326-1RF00-0AB0?
Yes, the eight input circuits are designed for NAMUR signals.
How many two-channel safety signals can 6ES7326-1RF00-0AB0 process?
The module supports four two-channel input circuits.
Which safety level can 6ES7326-1RF00-0AB0 reach with two-channel wiring?
Two-channel operation can reach SIL 3 under IEC 61508.
How long may a shielded sensor cable be for 6ES7326-1RF00-0AB0?
A shielded input cable may be up to 200 m long.
What front connector do I need for 6ES7326-1RF00-0AB0?
Use a 40-pin front connector for the module.
How can I identify an error on 6ES7326-1RF00-0AB0?
The module provides a diagnostic alarm and a red SF group-error LED.
Can I run 6ES7326-1RF00-0AB0 with an unshielded sensor cable?
Yes, an unshielded input cable can be up to 100 m long.
