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Hey there Contractors and fellow Service Professionals!
Today we are covering the Allen Bradley 1756-L62S Series B PLC. This is a GuardLogix Logix5562S Processor with 4 MB standard memory and 1 MB safety memory.
Allen Bradley 1756-L62S GuardLogix Processor
The 1756-L62S Logix 5562S GuardLogix controller is a ControlLogix controller that also provides safety control. During development, safety and standard have the same rules – multiple programmers, online editing, and forcing are all allowed.
GuardLogix Logix5562S Module
Allen Bradley 1756-L62S controller has a safety memory partition – when safety memory is locked and protected. The safety logic cannot be modified and all safety functions operate with SIL 3 CL integrity. On the standard side of the GuardLogix controller, all functions operate like a regular Logix controller. Thus, online editing, forcing, and other activities are all allowed.
With this level of integration, safety memory can be read by standard logic and external devices like HMIs or other controllers. This eliminates 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.
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Take a look at the Specs…
| Allen Bradley 1756-L62S Series B | |
|---|---|
| Communication Ports | One RS-232 Serial Port |
| Safety Communication Options | EtherNet/IP, ControlNet, DeviceNet,(standard and safety) |
| User Memory | 4 MB |
| Safety Memory | 1 MB |
| I/O Memory | 478 KB |
| Optional Nonvolatile Memory | 64 MB CompactFlash 128 MB |
| Max Digital I/O | 128,000 |
| Max Analog I/O | 4,000 |
| Max Total I/O | 128,000 |
| Current Draw | 1200 mA at 5 VDC 14 mA at 24 VDC |
| Power Dissipation | 3.5 W |
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You can use GuardLogix modules for field device connectivity on Ethernet or DeviceNet networks. This module can also be used for safety interlocking between GuardLogix controllers use Ethernet or ControlNet networks. Multiple GuardLogix controllers can share safety data for zone to zone interlocking. Also, a single GuardLogix controller can use remote distributed safety I/O between different cells/areas.
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Stay tuned for the next PLC item on our line up >> Allen Bradley 1764-LRP/C
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