ProTechTPS Total Protection System Manual 26710V1
100 Woodward
Problem or diagnostic
indication
Description Possible Cause Suggested Actions
Speed Probe Open Wire
(if speed redundancy is not
used)
The module detected
an open wire condition
on the speed probe
(Passive, or MPU
probe only).
Wiring fault or
probe fault.
Check wiring continuity
and probe integrity.
Speed Redundancy Manager
Trip
(if speed redundancy is used)
This trip will indicate
that the ProTech has
too many failed probes
to run.
Can be configured
to trip on loss of 1
or 2 probes
Check wiring continuity
and probe integrity.
Speed Lost Trip
(if the speed probe is used)
Sudden Speed Loss is
configured as Trip and
the module has
detected a sudden
speed loss.
Wiring fault or
probe fault.
Check wiring continuity
and probe integrity.
Speed Fail Trip
(if speed redundancy or the
speed probe is used)
Start logic – Speed
Fail Trip is enabled
and the module has
detected the Speed
Fail Override contact
input is open while
speed is below the
user configured Speed
Fail Setpoint.
Wiring fault,
speed probe fault.
Speed Fail
Override contact
input operation
not correct.
Incorrect speed
fail setpoint
configured.
Check wiring continuity
and probe integrity.
Check contact and
wiring operation.
See manual for
description of function.
Use PCT to verify
proper configuration
settings.
Speed Fail Timeout
(if speed redundancy or the
speed probe is used)
Start logic – Speed
Fail Timer is enabled
and the module has
not detected speed
within the time set by
the Speed Fail
Timeout setting.
Wiring fault,
speed probe fault.
Incorrect speed
fail timeout time
configured.
Check wiring continuity
and probe integrity.
See manual for
description of function.
Use PCT to verify
proper configuration
settings.
Table 5-2. Trip Indications
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