Appendix N. Changing Out Of Lo Mode; Local Display - GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual

Appendix N. Changing Out of LO Mode

LO (local override) indicates that someone is working on the device from the local display.
Sometimes users forget to switch back the TB to Normal mode and the following results occur:
ALL commands are ignored from the Fieldbus:
The only command accepted is Set to Normal.
WARNING
To resolve this problem, you need to have the positioner so that the LCD displays Normal so the
TB is out of LO mode. There are several different methods available to move the positioner out of
LO. All of these separate methods work:

"Local Display"

"Handheld" on page 253
"DD Host" on page 258
WARNING
Local Display
This procedure assumes that you are starting with a display displaying LO mode.
Press + until Normal appears (usually Normal), then click *.
You can verify that the action is complete by observing that the LCD automatically cycles
through the pressures and setpoints.
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
DTM
DCS
Asset Manager
Take care at all times that the positioner is not in or left in LO mode
inadvertently, as control commands from other sources can be
ignored!
"Device DTM" on page 252
"DD Method" on page 256
Switching the display to Normal mode allows the positioner to
follow the Setpoint from the TB, which may move the valve.
DD
Handheld
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