standexelectronics.com

Datasheet

Rev DBA

Page 2

+1 970.879.9900 | sensorsales@standexelectronics.com

S12H-SSTDSO-R5CB2-500

Gear Tooth Speed Switch

OTHER OPTIONS

As well as these Ferrous Target Speed Switches, we offer Magnet / Magnet

Tape activated Speed Switches, and Gear Tooth Speed Switches designed to

work with standard gears. We have options for relay outputs, NPN outputs, and

TTL outputs.

Note: Check our website or contact us to discuss any of our magnetic speed,

count, and position detection sensors.

Environmental Specifications

Corrosion Resistance

500 hours salt spray ASTM B-117

Installation Torque

23 Foot-Pounds Maximum

Enclosure

Nema 1,3,4,6,13 & IEC IP67

Vibration

10 G’s 2 to 2000 Hz Sinusodal

Mechanical Shock

100 G’s, 11 mS Half-Sine

OTHER MATING CONNECTORS AND CABLES AVAILABLE

Absolute Max Limits

Min

Max

Unit

Supply Voltage, Vcc-Gnd

-32

+32

Volts

Voltage at Output

-.3

30

Volts

Sink Current into Output

-

50

mA

Short Circuit Prot. Vout-Gnd

-

Indef.

Minutes

Short Circuit Prot. Vout-+Vcc

-

None

Minutes

Electrical Specifications Conditions

Min

Max

Unit

Temperature Range

Operating

-40

+110

Deg C

Supply Voltage, Vcc

Over temperature

+8

+30

Volts DC

Supply Current

Into Vcc, Vcc=12V

5

16

mA

Internal Pull up Resistor

Vcc to Vout

4.9

5.1

kOhms

Vol, Low Level Vout

Vcc = 12V, Rload >100k

0.0

0.7

Volts

Voh, High Level Vout

Vcc = 12V, Rload >100k

11.75

12

Volts

Overspeed TRIP Frequency Output goes low above

490

505

Hz

Underspeed Release Freq. Output goes high below

470

485

Hz

ESD (like product qualified) Nondestructive

-

2000

Volts

EMI (like product qualified) 20k to 1 G Hz

-

20

V / M

Sensor Characteristics

Output State at 0 Speed: High (Transistor Off)

Air Gap Range, Targets

Min

Typ

Max

.22” wide, .65” apart, .30” deep:

.000”

.070”

.140”*

.12” wide, .29” apart, .25” deep:

.000”

.045”

.090”*

.10” wide, .17” apart, .17” deep:

.000”

.028”

.055”*

.06” wide, .10” apart, .10” deep:

.000”

.015”

.030”*

TRIP Frequency Accuracy,

Output LOW

.98%

1.0%

1.01%*

RELEASE Frequency Accuracy,

Output HIGH

.99%*** 1.0%

1.02%

STOP DETECT TIME, Output

returns high after sudden stop

10ms (Typical)

* Gap the sensor less than MAX GAP.

** Output is LOW if teeth are passing by faster

than 1.02 * Trip Frequency.

***Output is HIGH if teeth are passing by slower

than 0.99 * Release Frequency

Rev D

Connections Chart

Pin 1 Vcc

Pin 3 Ground

Pin 2 1 Pulse per Target Pin 4 Speed Switch Output

CB2-SSTDSO

Rev A

Convert RPM to Hz

Over/Under Speed Trip Points are in Hz, pulses per second.

To convert RPM (Revolutions per Minute) to Hz, you need

to know the target’s pulses per revolution, “N”. A 20-tooth

target produces 20 pulses, so N=20.

Hz = RPM * ( N / 60 ). Or RPM = Hz * ( 60 / N).

Example: For a 20-tooth target and 500 Hz trip point, RPM

= 500 * (60 / 20) so the output

switches low at 1500 RPM.