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RheinTacho CR Series Programmable Rotary Speed Monitors
RheinTacho programmable speed monitors have numerous applications in many areas of technology, whether it be for protection of people, machines or manufactured products, to ensure that a plant operates at optimum efficiency, or for speed-dependent switching of system functions in a process. RheinTacho programmable speed monitors continuously monitor the motion of machines and systems. They detect the signals of most speed and motion sensors. If the measured value exceeds or falls below a preset limit value, the relay is automatically switched and the alarm function connected to it is activated. Versions with analog output are also available. The alarm function can be set for overspeed monitoring with reset switching delay. Once the speed has fallen below the switchback value and the switchback time delay has expired, the relay reverts to its normal status again. The alarm function can be set for underspeed monitoring with run-up bridging. Monitoring does not start until after the start signal of the starting-bridge has de-energized and the starting bridge time has elapsed. Features Selectable measuring units Accepts Hall and magnetic sensors PNP, NPN, or sine wave, 2- or 3-wire Input 0.01 Hz to 20,000 Hz, 36 V max 20 µsec minimum pulse duration Input averaging Programmable trigger threshold Programmable run-up delay Over-speed or under-speed monitoring 1 or 2 programmable relay outputs Programmable hysteresis Programmable alarm reset delay Programmable analog output Compact package for DIN-rail mounting Power 18 to 36 VDC, less than 160 mA GL approved versions available for shipboard applications Measuring Units Hz pulses/min pulses/hr rpm in/sec in/min in/hr ft/sec ft/min ft/hr mph meters/sec meters/min meters/hr km/hr pulses per unit 1 to 10,000			RheinTacho Speed Monitor Data Sheet RheinTacho Speed Monitor Brochure Instruction Manual
			Speed Monitoring and Over-Speed Protection Applications Diesel and stationary engines Construction equipment Wind turbines Material handling equipment Rotating machinery Conveying equipment Railway equipment
Model	Input	Input Range	Output	Power
CR	PNP, NPN or Sine Wave 2- or 3- wire 20 µsec duration	0.01 Hz to 20,000Hz 36 Vmax	1 SPDT Relay	18-36 VDC
CRR			2 SPDT Relays
CRA			1 SPDT Relay, Analog Output, 0-20 mA or 4-20 mA
CRRA			2 SPDT Relays, Analog Output, 0-20 mA or 4-20 mA

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