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6. Failsafe/OOS Considerations
Failsafe Mode vs. OOS Mode
In the FF device certain hardware and firmware failures (Table 9) cause OOS mode. These
failures are reported as a Failsafe condition on the Local User Interface. Failsafe can be caused
by the position sensor condition when the magnets are out of range. See "Mounting the SVI FF
on Rotary Valves" on page 50 or "Mounting the SVI FF on Reciprocating Valves" on page 55 to
adjust the magnets. Failsafe can also be caused by SVI FF internal damage.
To change the mode from OOS to any of the working modes, you must correct the Failsafe
condition cause. Possibly the device electronics may need replacement, which involves
contacting BHGE technical support.
Normally, the device Failsafe condition results in the OOS mode for the Transducer block.
However, this behavior is configurable and may be changed using the parameter FAILED_STATE,
sub-parameter PROPAGATE_APFS_TO_RB. By default this flag is set. If you set this flag, the
following sequence occurs as a result of Failsafe:
1. The Transducer block transitions to the OOS, which transitions the Resource block to OOS.
2. The Resource block then sets OOS for the downstream blocks.
CAUTION
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
If the faults in Table 9 occur several times in a row, ensure that
environmental noise is not the cause. If the environment is not
noisy contact Masoneilan.
Masoneilan SVI FF Instruction Manual
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Troubleshooting
