SmartGuard 600 Controller1752-L24BBB

SmartGuard 600 Controller1752-L24BBB 1752-L24BBBE

This manual explains how SmartGuard 600 controllers can be used in Safety Integrity Level (SIL) 3, according to IEC 61508, Performance Level PL(e) according to ISO 13849-1, and Category (CAT) 4, according to EN 954-1. It describes the SmartGuard 600-specific safety requirements and controller features, including PFD and PFH values, the safety network number (SNN), configuration signature, safety-locking, and project verification.
This chapter introduces you to the safety requirements and features of the SmartGuard 600 controller.
These additional pieces of data are used in SIL calculations for the SmartGuard 600 controllers:

• Safe failure fraction - 99.94% 

• Diagnostic coverage - greater than 90% 

• Mean Time to Failure (MTTFd) = over 100 years 

• Total Common Cause Failure (CCF) = over 65
The configuration signature defines the controller’s configuration. It can be read and monitored and is used to uniquely identify the controller’s configuration in several operations. 

• During download from the configuration software, the configuration signature provides you with a means to check that the device and the configuration tool agree on the information downloaded. 

• During device replacement, the configuration signature lets you verify that the configuration in the software is the correct configuration. If the originator is used to automatically configure a device, the configuration signature indicates whether reconfiguration is necessary and ensures the integrity of the operation. 

• During connection establishment, the originator and the target devices use the configuration signature to ensure that both devices agree on the device configuration. 

• The configuration signature is auto-generated by the configuration software when a SmartGuard 600 controller is added to the project. 

The configuration of the controller can be protected by the use of an optional password. Download, safety-reset, and safety-lock and -unlock are password protected. When a device is safety-locked, you also cannot change the password or change the status of the device, without first entering the existing password. After configuration data has been downloaded and verified, the configuration data within the controller can be protected using RSNetWorx for DeviceNet software. Run the Safety Device Verification Wizard to lock the controller. When applying Functional Safety, restrict access to qualified, authorized personnel who are trained and experienced. The safety-lock function with passwords is provided by the Safety Device Verification Wizard in RSNetWorx for DeviceNet software. You are responsible for controlling access to the safety system, including password use and handling