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Speed Sensor

Speed Sensor
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THE SOURCE OF HYDRAULIC POWER SPEED SENSOR HALL Speed sensor for Sunfab hydraulic motors SCM Sunfab speed sensor is available on ISO/SAE/DIN motors (not M2), displacement 010-130 cc. The sensor is a two channel hall effect sensor and has two frequency outputs both giving square wave signals, phase shifted ~90 °. It's available in both PNP and NPN versions. The frequency is determined by: f = —bo— = —, n (rpm) • It can operate at high temperatures. • The speed is detected from the gears on the cylinder block. Since the sensor is working with two channels the rotation direction can be detected. • The number of gears is 30 for all motor displacements. • Motors manufactured prepared for speed sensor can also have a sensor fitted afterwards. ^SUNFAB Sunfab Hydraulics AB, Box 1094, SE-824 12 Hudiksvall, Sweden. Tel: +46 650-367 00, Fax: +46 650-367 27, E-mail: sunfab@sunfab.se Web: www.sunfab.com

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SPEED SENSOR HALL Technical data Power supply Current consumption Frequency range Number of pulses/rev. Maximum output current Output Output signal level Load impedance Load capacitance Short circuit immunity Reverse polarity protection Cable conductor assignment Cable Cable length Bending radius of cable Measuring distance Weight 8 - 32 V DC < 33 mA at 24 V both outputs low < 23 mA at 24 V both outputs high 1 - 6000 Hz 30 500 mA at 24 V, +25 °C / 50 % duty cycle 50 mA at 24 V, +125 °C / 50 % duty cycle NPN with 5k pull-up resistor PNP with 5k pull-down resistance Low: < 2 V; High: > 5 V >...

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SPEED SENSOR HALL Diagram Block circuit diagram PNP High Signal UA ≥ UB – 2V Low Signal UA ≤ 1V Counter-clockwise rotation

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SPEED SENSOR hall Speed SenSor HALL Prepared for speed sensor Fitted speed sensor type PNP Fitted speed sensor type NPN Example: Motor with speed sensor SCM-025W-V-I42-K30-K3G-1S1 Example: Motor prepared for speed sensor SCM-025W-V-I42-K30-K3G-1P1 – Motor with speed sensor – Motor prepared for speed sensor mounted with a steel plug Dimensions Type SCM-ISO and SAE [mm] Produced in Sweden by Nova Design 3417GB1205 Produced in Sweden by Nova Design NOTES 1. Line to sensor must be shielded 2. Lines to electronic unit must not be routed close to other power conducting lines in the machine or...

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