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Page 1 of 2, Last saved by 2014-10-29, Specifications subject to change without notice.

Gear Tooth Speed and Direction Sensor

SD101201 Sensors

Circuit protected, flange mount Hall Effect

gear tooth speed and direction sensor

Description

The SD101201 has two Hall Effect sensors; one detects speed and the other detects direction of movement of gear teeth. The

outputs are open collector transistors. The Speed output goes low (ON) when sensing the leading edge of a tooth and high (OFF)

at the trailing edge of the tooth when run against a standard target (see diagram). The Direction output goes low (ON) for

clockwise rotation and high (OFF) for counterclockwise rotation (as seen in the diagram); it is latched in that state as long as there

is movement detected. The state of the Direction output always leads the rising edge of the Speed output – correct Direction

sensing will occur faster after start-up than correct Speed sensing. An external pull-up resistor is required.

Features

Typical Applications



Separate digital outputs for speed and direction



From near zero speed up to 15 kHz sensing capability



Plastic flange-mount sensor rated to 125

⁰C



RoHS compliant



IP67



Typical air gap of 1.5 mm (0.06”)*



Wheel speed and direction



Hoist speed and direction



Transmission speed and direction



Industrial feedback and control

Environmental Specifications

Vibration

Sinusoidal, 3.3 g max from 20 Hz to 1 kHz

Maximum Speed Detection

15 kHz

Operating Temperature

-40

⁰C to 125 ⁰C (-40 ⁰F to 257 ⁰F)

Storage Temperature

-40

⁰C to 125 ⁰C (-40 ⁰F to 257 ⁰F)

Ingress Protection

IP67

Electrical Specifications

Operating Supply Voltage

4.75 to 24 VDC

Maximum Input Voltage

30 VDC

Maximum Reverse Voltage

30 VDC

Supply Current

20 mA max

Output Sink Current

20 mA max

Typical Operating Time

5 µs

Recommended Pull-Up Resistor

See chart

Mechanical Specifications

Housing Material

Glass Reinforced Thermoplastic

Maximum Installation Torque Limit

5.65 Nm (50 in lb) on threads

Operating Air Gap / Sensing Distance*

1.5 mm (0.06")

* With recommended target type; see drawing

Sensor Orientation

Sensitive; see drawing

** Mates to Delphi 12162833 connector, 12124075 terminal

Note: An external pull-up resistor is required, the value of which is dependent on the supply voltage. The resistor should be

connected between the output and Vcc. Refer to the wiring diagram for lead colors or pin numbering as applicable.

Products

Part Number

Connector**

SD101201

Delphi Metri-Pak 150