Woodward ProTech TPS, Руководство по эксплуатации продукта

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Manual 26710V1 ProTechTPS Total Protection System
Woodward 63
If the ProTechTPS’s speed redundancy manager is not configured for use, then
each module simply uses its local speed sensor signal, and compares it to the
overspeed setpoint to determine an overspeed event.
If the ProTechTPS’s speed redundancy manager is configured for use then each
module uses its local sensed speed signal and the shared speed signals from the
other two modules to select/vote the signal to use in its overspeed detection
logic. The speed redundancy manager can be configured to vote the median,
highest or lowest speed signal to use in its overspeed detection logic, and can be
configured to change its voting logic based on the number of healthy speed
probes/signals.
Note that with the Speed redundancy manager allows users to elect to use three
speed sensing probes, or two speed sensing probes or only one speed sensing
probe depending on the specific application’s requirements. If only two probes
are used, then the third module can be configured to only use and vote on the
shared speed signals (from the other modules) to use in its overspeed and over-
acceleration detection logic. Although not recommended, if only one probe is
used, then the second and third modules can be configured to only use and vote
on the shared speed signal (from the first module) to use in their overspeed and
over-acceleration detection logic.
If the unit is configured for only two probes (or just one probe), there will be a
configuration mismatch and associated alarm. This alarm can be disabled in the
Configuration Management Menu.
Speed Input Specifications
General Specifications
Number of Inputs 1, selectable as passive or active probe by front panel
configuration
Speed Sensing
Accuracy Accuracy: ±0.04% of current speed over –20 to +60
°C ambient temperature
Acceleration Sensing
Accuracy and Range Accuracy: ±1% of current speed
Detectable over-acceleration range: 0 to 25000 rpm/s
Signal Cable Length Must be limited to 1500 ft /457 m (low capacitance
16 AWG / 1.3 mm²)
Internal Test
Frequency Generator 6 Hz to 32 kHz, selectable in different test modes,
see Chapter 4, Configuration and Operation
Table 3-2. General I/O Specifications
Passive Probe (MPU) Inputs
Input Frequency Passive Probe (MPU): 100 Hz to 32 kHz
Input Amplitude 1 Vrms to 35 Vrms
Input Impedance
1.5 k

Isolation 500 Vac from input to chassis and input to all other
circuits
Open Wire Detection MPU only > 7.5 k Ω
Table 3-3a. Passive Probe Specifications