Rockwell Automation 1756-SYNCH ControlLogix SynchLink Module User Manual - Manual (Page 30)

Publication 1756-UM521C-EN-P - July 2004
3-2 SynchLink Module Features
Module Features That
Cannot Be Configured These general module features (e.g. Removal and Insertion Under
Power) are supported on the module regardless of configuration and
application. The following general module features are available with
the ControlLogix SynchLink module:
• Removal and Insertion Under Power (RIUP)
• Module Fault Reporting
• Full RSLogix 5000 Support
• Status Indicator (LED) Information
• Class I Division 2 Certification
• Agency Certification
• Use Last Configuration When Connection to Owner-Controller Closes
- For Module’s Using Firmware Revision 2.18 or Greater
Removal and Insertion Under Power (RIUP)
All ControlLogix SynchLink modules may be removed and inserted
from the chassis while power is applied. This feature allows greater
availability of the overall control system because, while the module is
being removed or inserted, there is no additional disruption to the rest
of the controlled process.
Although there is no disruption to other devices when the SynchLink
module is removed and inserted from the chassis while power is
applied, the removal and insertion will break communications
between SynchLink modules and will impact the performance of the
SynchLink system.
Removing and reinserting the SynchLink module under power also
impacts overall system performance and operation because the
ControlLogix chassis are no longer synchronized. Depending on the
application, removing and reinserting the SynchLink module under
power may cause significant changes to an application, including the
possibility of a system E-Stop (emergency stop).
Because of its impact on other chassis, the removal of a SynchLink
module while under power may cause personal injury or property
damage.
WARNING
When you insert or remove the module while
backplane power is on, an electrical arc can occur.
This could cause an explosion in hazardous location
installations. Be sure that power is removed or the
area is nonhazardous before proceeding.