Woodward 505XT, Инструкция по установке и эксплуатации, Страница: 42 / 242

Manual 35018V1 505XT Digital Control System for Steam Turbines
Woodward 40
Features

Two (2) Digital Speed Sensor circuits, isolated individually

GAP configurable for MPU sensors or Proximity sensor operation

Separate terminals provided for MPU and Prox sensors

Isolated Prox Power (+24 Vdc) is provided with short-circuit protection

Woodward GAP block, diagnostics, and configuration support

GAP configurable update rates of 5 ms to 160 ms
Specifications (MPU / PROX)
MPU Input Voltage: 1 to 35 Vrms
MPU Input Frequency: 10 Hz to 35 KHz
MPU Input Impedance: 2000
Ω , DC
MPU Input Isolation: 500 Vrms to EARTH and all other I/O
500 Vrms to other MPU and PROX channels
Prox Input Voltage:
0-32 VDC
Prox Input Frequency: 0.04 Hz to 35 KHz (low limit depends on range)
Prox Input Impedance: 2000
Ω , DC
Prox Threshold: Low is < 8 VDC, High is > 16VDC
Prox Input Isolation:
500 Vrms to EARTH and all other I/O
500 Vrms to other MPU and PROX channels.
Prox 2 outputs:
24 VDC ± 14%, 0-200 mA, short circuit & diode protected
Prox Power Isolation: 500 Vrms to EARTH, all other I/O, & other Prox Power
Max Speed Range: software selectable from 5 kHz to 35 kHz
Accuracy (-40,70c):
< ±0.01% of full scale range selected
Resolution: > 22 bits
Speed Filter (ms): 5-10,000 ms (2 poles)
Derivative Filter (ms): 5-10,000 ms (speed 1 pole)
Derivative Accuracy:
0.1% of full scale range, over full temperature range
Acceleration limit: 1-10,000 %/sec
Figure 2-6. Speed Sensor Block Diagram