Inputs
2 Tachometer Inputs:
±25V (50V maximum peak to peak)
- Eddy current transducer signals
- Magnetic pickups
- TTL output devices
Input Impedance:
120k ohms minimum
Speed/Frequency Range:
1 to 1,200,000 RPM
0.0167 to 20,000Hz
Speed Measurement Error:
1 to 240 RPM: ±0.2 RPM
241 to 12,000 RPM: ±2 RPM
12,001 to 20,400 RPM: ±5 RPM
20,401 to 120,000 RPM: ±20 RPM
120,001 to 360,000 RPM: ±50 RPM
360,001 to 1,200,000 RPM: ±160 RPM
Sensor Fault Detection:
- Eddy Current Transducer—Bias voltage is compared with user defined fault limits
- Magnetic pickups—A current source is available for biasing passive magnetic pickups to detect open or short circuits
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