GE Industrial Solutions Entellisys 5.0 Administrator Manual - Manual (Page 25)

Operation 25
5
The Non-Master HMI text indicates that the HMI will
not accept RELT mode commands and will be
displayed on all other HMIs - both Local PanelC HMIs
and PCs with Remote Interactive software.
CAUTION: RELT will not turn off if there is more than one HMI configured as a “Master” in the
system.
HMI Indication
The Entellisys HMI will provide positive feedback through local indication that one or more of the
RELT elements are operating with RELT (Topology 0) settings. The HMI will constantly monitor and
update the Reduced Let - Thru Mode, One-Line and Elevation screens with the system state.
States of RELT
RELT state is indicated by the color of the Reduced Let - Thru Mode button for all modes and a
colored box surrounding the breaker icon (See Figure 5-2). The color of the annunciation also
provides information about the state of the system:
• Solid Yellow - Indicates that both CPUs are operating on RELT (Topology 0) settings.
• Flashing Yellow - Indicates that only one CPU is operating on the new RELT (Topology 0)
settings. Although there is no redundancy, the system is still operating on the adjusted
settings.
• Flashing Red - Indicates either a loss of communication between the HMI and both CPUs
while RELT mode is turned on or that there was an error and neither CPU are operating
with RELT (Topology 0) settings and RELT Mode it is not in effect.
Breaker Indication
The blue location LED will blink at 2hz on the breaker while it is operating in RELT (Topology 0)
settings.