For the user in the field, the REMSAFE field isolation station has three buttons and a lockable switch. That's it.
Every step of the way is guided by indicator lamps with matching text and graphics on the optional HMI. The control room operator sees the same HMI content.
When the equipment under control is stationary and in "out to maintenance" mode, REMSAFE becomes available.
The equipment operator pushes a button to request permission from the control room to isolate the equipment. Control room approval via the SCADA interface starts the automated racking out sequence. The system checks for voltage and conducts a try-step. When the checks are satisfactory the isolation lockout switch is able to be turned to the "Isolate" position. The field operator has a button to conduct a manual try-step before applying a personal lock.
To de-isolate, the lock is removed and the switch rotated from "Isolate" to "Normal." Pushing the "Return to Service" button restores control of the equipment to the control room. De-isolation does not restart the equipment; that is left to the control room operator.
Maintenance is simplified by the use of off-the-shelf safety-rated modular components with tried and tested safety-rated programmable logic controllers driving the software.
As part of its one-stop solution ICM Group installs, maintains and provides 24/7 technical support. www.icmgroup.com.au