Allen-Bradley GuardPLC 1753, Справочник по безопасности

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72 Publication 1753-RM002C-EN-P - September 2008
Chapter 6 DeviceNet Safety I/O for the GuardPLC Control System
Safety Considerations for
I/O Module Replacement
The replacement of safety devices requires that the replacement
device be configured properly and that the operation of the
replacement device be user-verified.
When replacing a module, you cannot automatically recover the
configuration signature. You need to set the Safety Network Number
via RSNetWorx for DeviceNet software and re-load the configuration.
Then drop and re-establish the I/O connection with the DeviceNet
Safety Scanner module.
Safety-lock with Password
Protection
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 handling.
For information on the safety-lock feature or on setting a password
using RSNetWorx for DeviceNet software, refer to the DeviceNet
Safety Scanner for GuardPLC User Manual, publication 1753-UM002.
After configuration data has been downloaded and verified, the
configuration data within the module can be protected, using
RSNetworx for DeviceNet software. Run the Safety Device Verification
Wizard to lock the module.
Safety-lock Application Process
ATTENTION
No safety function that includes any portion of the replaced
module may be relied upon during the replacement and
functional testing of the module.
RSNetWorx for DeviceNet Software
Configuration Lock Operation
DeviceNet Network
Configuration Data Download
Configuration
Data
CompactBlock Guard I/O Module