GuardLogix Integrated Safety System
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GuardLogix Integrated Safety System Overview
A GuardLogix® controller is a full-function Logix processor that also provides safety control. The GuardLogix system is a dual processor solution that uses a primary controller and a safety partner to achieve SIL 3, PLe/Cat.4. A major benefit of this system is that it is a single project, with safety and standard control together. The GuardLogix system is a 1oo2 safety architecture that provides unmatched safety and ease of use.
Just like other Logix processors during development, safety and standard have the same rules. Online editing, forcing, even multiple users are all allowed. Once the project is tested and ready for final validation, you set the Safety Task to a SIL 3 integrity level, which is then enforced by the GuardLogix controller. When safety memory is locked and protected, the safety logic cannot be modified and all safety functions operate with SIL 3, PLe/Cat. 4 integrity. On the standard side of the GuardLogix controller, all functions operate like a regular Logix controller, motion, drive, sequential, even process. Thus, online editing, forcing, and other activities are all allowed, while safety is securely isolated.
With this level of integration, safety memory can be read by standard logic and external devices, such as HMIs or other controllers, eliminating the need to condition safety memory for use elsewhere. The result is easy, system-wide integration and the ability to display safety status on displays or marquees. Use Guard I/O modules for field device connectivity on Ethernet or DeviceNet networks. For safety interlocking between GuardLogix controllers, use Ethernet or ControlNet networks. Multiple GuardLogix controllers can share safety data for zone-to-zone interlocking, or a single GuardLogix controller can use remote distributed safety I/O between different cells/areas.
Features
In addition to the standard features of a Logix controller, GuardLogix controllers have these safety-related features.
| Feature | 1756-L61S, 1756-L62S, 1756-L63S, 1756-LSP | 1768-L43S, 1768-L45S | |
| Communication options | Standard and safety • EtherNet/IP • ControlNet • DeviceNet |
Standard • EtherNet/IP • ControlNet • DeviceNet |
Safety • EtherNet/IP • ControlNet |
| Network connections, per network module | • 256 EtherNet/IP; 128 TCP (1756-EN2x) • 128 EtherNet/IP; 64 TCP (1756-ENBT) • 100 ControlNet (1756-CN2/A) • 40 ControlNet (1756-CNB) |
• 128 EtherNet/IP; 64 TCP (1768-ENBT) • 48 ControlNet (1768-CNB) |
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| Controller redundancy | Not supported | ||
| Programming languages | Relay ladder | ||
Environmentals and Certifications
GuardLogix Controllers Environmental Specifications
| 1756 GuardLogix Controllers | 1768 GuardLogix Controllers¬ | |
| Operating temperature |
0…60 °C (32…140 °F) | 0…60 °C (32…140 °F) |
| Storage temperature |
-40…85 °C (-40…185 °F) | -40…85 °C (-40…185 °F) |
| Relative humidity |
5…95% noncondensing | 5…95% noncondensing |
| Vibration |
2 g at 10…500 Hz | 5 g at 10…500 Hz |
| Operating shock |
30 g | 30 g |
| Nonoperating shock |
50 g | 50 g |
| ¬ 1768 GuardLogix controller specification and certification listings are preliminary. | ||
GuardLogix Controllers Certifications
Certifications: UL, c-UL-us, CE, CSA, C-Tick, FM, ATEX, certified by TÜV for Functional Safety.
When product is marked. See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification details. For safety and SIL certification details, see the Safety Certifications and SIL link.
GuardLogix Controllers
Specifications [PDF]
| Cat. No. | Description | User Memory | Module Expansion Capacity‡ | |
| Standard Tasks and Components | Safety Task and Components | |||
| 1756-L61S | GuardLogix safety controller | 2 MB | 1 MB | Not applicable |
| 1756-L62S | 4 MB | 1 MB | ||
| 1756-L63S | 8 MB | 3.75 MB | ||
| 1756-LSP | GuardLogix safety partner¬ | — | — | |
| 1768-L43S | Compact GuardLogix safety controller | 2 MB | 0.5 MB | 1768 Modules: 2 1769 Modules: 16 |
| 1768-L45S | 3 MB | 1 MB | 1768 Modules: 4 1769 Modules: 30 |
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| ¬ A safety partner is required for each 1756 GuardLogix controller. ‡ You can install any combination of motion and network modules in a 1768 system. A maximum of two network modules may be installed in a 1768 system. |
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Example Configuration—1756 GuardLogix System
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Example Configuration—1768 Compact GuardLogix System
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Guard I/O™ Modules
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Control and monitor your safety devices with Guard I/O. When used with GuardLogix controllers, Guard I/O communicates on EtherNet/IP or DeviceNet using CIP Safety protocol. As a proven technology Guard I/O detects failure at the I/O and field device level, while enhancing operator protection.
CompactBlock Guard I/O modules are available in IP20 (in-cabinet) form factor. ArmorBlock Guard I/O modules are IP67 (on-machine) form factor. POINT Guard I/O provides maximum I/O density in minimal panel space.
For more information, see:
1791DS/ES CompactBlock Guard I/O
1732DS ArmorBlock Guard I/O
POINT I/O Overview
Standard Components in a GuardLogix System
These standard components are approved for use in GuardLogix safety systems. For specific series or version supported, see the Safety Certificates and SIL site.
Chassis
1756 GuardLogix controllers use a ControlLogix chassis. 1768 Compact GuardLogix is a panel-mounted or DIN-rail mounted system.
| Cat. No. | Description |
| ControlLogix Chassis for 1756 GuardLogix controllers | |
| 1756-A4 | 4-slot ControlLogix standard chassis |
| 1756-A7 | 7-slot ControlLogix standard chassis |
| 1756-A10 | 10-slot ControlLogix standard chassis |
| 1756-A13 | 13-slot ControlLogix standard chassis |
| 1756-A17 | 17-slot ControlLogix standard chassis |
Power Supplies
| Cat. No. | Description |
| ControlLogix Power Supplies for 1756 GuardLogix controllers | |
| 1756-PA72 | AC Power supply |
| 1756-PB72 | DC Power supply |
| 1756-PA75 | AC Power supply |
| 1756-PB75 | DC Power supply |
| 1756-PA75R | AC Redundant power supply |
| 1756-PB75R | DC Redundant power supply |
| CompactLogix Power Supplies for 1768 Compact GuardLogix controllers | |
| 1768-PA3 | AC Power supply |
| 1768-PB3 | DC Power supply |
Communication Modules and Adapters
| Cat. No. | Description |
| ControlLogix Communication Modules for 1756 GuardLogix controllers | |
| 1756-ENBT | Ethernet Bridge Module |
| 1756-EN2T | Ethernet Bridge Module, 2-port |
| 1756-EN2TR | Ethernet Bridge Module, with embedded switch technology |
| 1756-EN2TR | Ethernet Bridge Module, 2-port |
| 1756-DNB | DeviceNet Bridge Module |
| 1756-CN2 | ControlNet Bridge Module |
| 1756-CN2R | ControlNet Bridge Module, Redundant |
| 1734-AENT | 2-Port EtherNet/IP I/O Adapter Module |
| 1734-AENTR | 2-Port EtherNet/IP I/O Adapter Module, Redundant |
| CompactLogix Communication Modules for 1768 Compact GuardLogix controllers | |
| 1768-ENBT | Ethernet Bridge Module |
| 1768-CNB | ControlNet Bridge Module |
| 1734-AENT | 2-Port EtherNet/IP I/O Adapter Module |
| 1734-AENTR | 2-Port EtherNet/IP I/O Adapter Module, Redundant |
Programming Software
| Cat. No. | Description |
| RSLogix 5000 Programming Software for 1756 and 1768 GuardLogix controllers | |
| 9324-xxxx | RSLogix 5000 Software |
I/O Modules
For control that is not SIL 3 related, other 1756 series I/O can be used as needed with 1756 GuardLogix controllers, provided those modules are certified to the Low Voltage and EMC Directives. Refer to www.ab.com/certification/ce to find the certificate for the Programmable Control – ControlLogix Product Family.
For control that is not SIL 3 related, other 1768 or 1769 series I/O can be used as needed with 1768 Compact GuardLogix controllers, provided those modules are certified to the Low Voltage and EMC Directives. Refer to www.ab.com/certification/ce to find the certificate for the Programmable Control – CompactLogix Product Family.
Software
GuardLogix controllers use RSLogix™ 5000 programming software, the standard development environment for all Allen-Bradley Logix controllers. RSLogix 5000 software manages safety, so you don't have to manually manage the separation of standard and safety memory, or worry about partitioning logic to isolate safety.
The FactoryTalk Suite from Rockwell Software extends the Rockwell Automation Integrated Architecture™ by providing an information tier of software applications and services for production and performance management. Tight integration with the Rockwell Automation Logix control platform, as well as connectivity to third-party and legacy systems can help deliver a seamless flow of high-fidelity data across your enterprise.
For more information see RSLogix 5000 Software.
Safety-certified Instructions in RSLogix 5000 Software
All instructions available for use within the safety task are certified safety instructions. Choose from standard relay ladder safety instructions and safety application instructions, including:
- 49 safety-certified instructions
- Subset of standard ladder logic instruction set
- Subset of standard ladder logic instruction set
- Safety-certified application instructions
- Dual channel suite - 6 instructions
- Metalforming suite - 10 instructions
- Muting suite - 3 instructions
- Safety mat
- Dual channel suite - 6 instructions
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Accessories
Replacement Batteries
| Attribute | 1756-BA2 |
| Description | Lithium battery (0.59 g) |
| GuardLogix controllers | 1756-L61S, 1756-L62S, 1756-L63S |
Industrial CompactFlash Cards
CompactFlash cards offer nonvolatile memory (flash) to permanently store a user program and tag data on a controller. You install the 1784 CompactFlash card in a socket on the controller. You can manually trigger the controller to save to or load from nonvolatile memory or configure the controller to load from nonvolatile memory on power up.
1756 and 1768 GuardLogix controllers support user program storage or retrieval by using a CompactFlash card with version 18 or later of RSLogix 5000 software.
| Attribute | 1784-CF64 | 1784-CF128 |
| Memory | 64 MB | 128 MB |
| Weight, approx. | 14.2 g (0.5 oz) | |