GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 21

information about the reason for failure. You must correct the condition (e.g.
connect the air supply if Air Supply Low error is reported or remove obstacle,
stopping the valve if Actuator or Position Error is reported). When the condition is
corrected, clear faults by writing the appropriate value to parameter
88.CLEAR_STATUS. In some cases you may need to restart the device.
A failure condition exists in the valve position control algorithm that won't allow the
valve to operate. Verify that state by reading parameter 74.FAILED_STATE. For more
information see the previous point.
You have set the device to Fault State from the local LCD display. Review this by
reading the value of parameter 86. APP_MODE. Correct the condition by switching
the Application mode to Normal from the local display or by setting the parameter
86.APP_MODE to Normal.
WARNING
LO – This is an indication that the valve is controlled from the local display. Verify this
by reading parameter 86.APP_MODE – it has a value of Setup. Transfer the control
back to the FF interface by switching the local LCD display to Normal mode.
The mode can be switched remotely through FF, by writing to parameter
86.APP_MODE the value Normal.
WARNING
MAN – You are in control of the valve positioner. You can execute configuration,
maintenance and diagnostic procedures. If the SETPOINT_SOURCE=AO-Final Value,
you can move the valve by writing a value to FINAL_VALUE parameter.
AUTO – The valve position is being set from the function block, configured for that
purpose. The following cases are possible:
SETPOINT_SOURCE=AO-Final Value, the Analog Output block is in control and
SETPOINT is set from FINAL_VALUE
SETPOINT_SOURCE= DO-Final Value D in Open/Close mode, one of the Discrete
Output blocks is in control and SETPOINT is set from FINAL_VALUE_D.
SETPOINT_SOURCE= DO-Final Value D in 1% steps mode, one of the Discrete
Output blocks is in control and SETPOINT is set from FINAL_VALUE_DINT.
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
Changing the Application to Normal mode may switch the TB to
MAN or AUTO mode and move the valve. It may be dangerous if
someone is still working with the valve.
Changing the Application to Normal mode may switch the TB to
MAN or AUTO mode and move the valve. It may be dangerous if
someone is still working with the valve.
Masoneilan SVI FF Instruction Manual
| 21
=