Woodward ProTech 203, Руководство по эксплуатации

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ProTech 203 Overspeed Protection System Manual 85204
8 Woodward
Remote Reset
Can be reset from a remote location
The external field wiring to the Remote Reset and Contact Input
terminals must be protected from user accessibility. It must be hard-
wired like a hazardous voltage circuit.
Contact Input
Depending on how the unit is configured, this input can act as a remote start
input, or as an indication to the ProTech system that it should be sensing speed
greater than the MPU fail set point.
Built-In Self-Test
A built-in frequency generator permits testing of each unit individually while prime
mover is on-line
Key Lock
Prevents any programming or testing by unauthorized personnel
Replacement
Each subsystem can be replaced (after disconnecting the supply power at the
external disconnecting means) while the other two subsystems are powered
without tripping the prime mover
Outputs
A separate alarm output and LED indicate if an individual speed-sensing unit has
tripped
MPU Failure Indications
Separate LEDs indicate if an MPU or its wiring has failed
MPU Fail Timer
A timer is provided for start-up; if prime mover speed is not up to the value
programmed when this timer times out, the device will trip the prime mover. Both
the time and the speed are programmable
MPU Fail Option
Each unit can be configured so that on the sudden loss of that unit's MPU, the
unit can either output both an alarm plus a trip signal, or the unit can output only
an alarm
CPU Failure Indication
A separate LED indicates if any unit's CPU is not operating normally
Speed-Sensing Frequency Range
100 Hz to 32 kHz
Trip-Point Frequency Range
250 Hz to 25 kHz
MPU Input Amplitude
1 Vrms minimum @ 100 Hz to 25 kHz
2 Vrms minimum @ 25 kHz to 32 kHz
maximum 25 Vrms