DART CONTROLS PU-R SERIES SPEED PICKUP PU-4R

DART CONTROLS PU-R SERIES SPEED PICKUP is an economical and reliable way to monitor motor speed. The PU-R series is rated NEMA 4 for outdoor applications where temperature, humidity, rain, and dust are present. The PU-R is also recommended for applications where water washdown is expected. Its unique design provides ease of installation to otherwise difficult to reach areas. Installation is simple - drill and tap a target shaft and you're done. The PU-R pickup operates at a 5 to 24 volt level producing a sharp square wave output, which may be fed into Dart's field programmable tachometer, closed-loop control, counter, or any other digital device. Completely self contained, the PU-E series eliminates the alignment hassle found with other devices. An excellent 'Motor Not Running' feedback device to PLC/SCADA systems. Features: Single screw installation - no alignment needed For shaft speeds up to 5000RPM 6' cable provided with rubber jacket (may be extended up to 300') Supply Voltage: +5 to +24VDC NPN output - NPN sinks 50mA max Ambient temperature range: -40°C to +100ºC Santoprene injection molded head Enclosure rating: NEMA 4 Application Notes: If installing the unit on a motor purchased from Dart, the motor shaft is already drilled and tapped. If the motor is fan-cooled (TENV), remove the plug in the center of the fan guard before installing the pickup. Otherwise, damage to the pickup may occur. No other screws are necessary, as the cord will keep the unit from rotating. The PU gives a high signal when the North Pole in the magnet crosses the hall-effect transistor. The signal is switched off when the South Pole crosses the hall-effect transistor. The result is a square wave whose frequency is proportional to the speed of the shaft that the PU is mounted on. The number of North/South Pole pairs directly affects the output.