Red-lion PSAFP - FLAT PACK User Manual download pdf



IDEAL FOR LIMITED SPACE APPLICATIONS



SENSE FERROUS & NON-FERROUS METAL OBJECTS TO

“ZERO SPEED”



3-WIRE NPN TRUE OPEN COLLECTOR OUTPUTS



2 SIZES & SENSING DISTANCES FOR APPLICATION

VERSATILITY



L.E.D. TARGET INDICATOR

“FLAT PACK” RECTANGULAR INDUCTIVE PROXIMITY SENSORS

These Inductive Proximity Sensors have a maximum sensing distance of

0.078" (2 mm) and 0.393" (10 mm) respectively, and operate over a wide power

supply range (See Specifications Below). They are each housed in plastic with

a top active face. The NPN transistor outputs are true open collector and are

compatible with most Red Lion counter and rate meter input circuits. Maximum

sensing frequencies are 2 KHz and 500 Hz respectively. In addition, the outputs

are overload and short circuit protected. These sensors are shielded for flush

mounting in metal applications.

PSAFP1 AND PSAFP2 SPECIFICATIONS

PSAFP100 PSAFP200

1. Power Supply: +10 to +30 VDC

@ 15 mA max.

REVERSE POLARITY PROTECTION

2. Maximum Switching Frequency: 2 KHz 500 Hz

3. Output: NPN Open Collector Output,

Overload and Short Circuit protected.

SAT

= 1.8 V @

150 mA max. load

SAT

= 1.8 V @

200 mA max. load

4. Maximum Sensing Distance: 0.078" (2 mm) 0.393" (10 mm)

5. Wire Color Code: Brown = +VDC; Blue = Common;

Black = Output

6. Operating Temperature: -25° to +85°C

(-14° to +185°F)

-25° to +70°C

(-14° to +158°F)

7. Construction: NEMA 1, 3, 4, 6, 13 and IEC IP 67

8. Trigger Current for Overload Protection: 170 mA 220 mA

DESCRIPTION & OPERATION

Inductive Proximity Sensors detect the presence of metal objects that come

within range of their oscillating field and provide target detection to “zero

speed”. Internally, an oscillator creates a high frequency electromagnetic field

(RF) that is radiated from the coil and out from the sensor face (See Figure 1).

When a metal object enters this field, eddy currents are induced into the object.

As the metal moves closer to

the sensor, these eddy currents

increase and result in an absorption

of energy from the coil that

dampens the oscillator amplitude

until it finally stops.

MODELS PSAFP1 & PSAFP2

In addition to the coil and oscillator circuit, the 3-wire Models PSAFP1 and

PSAFP2 each contain a Detector Circuit and NPN Transistor Output (See

Figure 2). In these units, the Detector Circuit senses when the oscillator stops,

and turns on the Output Transistor that controls the load. The Detector Circuit

also turns on an integrally case mounted L.E.D., visually indicating when a

metal object is sensed.

METAL

TARGET

CIRCUIT

OSC.

SENSING FIELD

OUTPUT ON

OSCILLATOR STALLED

AMPLITUDE

ABSENT

TARGET

OUTPUT OFF

SENSOR

TARGET APPROACHING

TARGET PRESENT

TARGET ABSENT

Figure 1

Bulletin No. PSAFP- A

Drawing No. LP0589

Released 03/13

Tel +1 (717) 767-6511

Fax +1 (717) 764-0839

www.redlion.net

METAL

TARGET

CIRCUIT

OSC.

COIL

PSAFP1 and PSAFP2

OUTPUT TRANSISTORDETECTOR

LED

+VDC

BROWN

OUTPUT

BLACK

COMMON

BLUE

Figure 2

12 3

SRC

LO FRQ

LO BIAS

SNK

APPLICATION

DEPENDENT

TYPICAL COUNTER

INPUT SWITCH SET-UP

PSAFP1, PSAFP2

+12V

COMM.

CNT.

NPN OPEN

COLLECTOR

+VDC = BRN

OUTPUT = BLK

COMMON = BLU

TYPICAL HOOKUP

LED STATES

LED ON (GREEN) POWER ON

LED ON (YELLOW) OUTPUT ENERGIZED

LED ON (FLASHING GREEN) SHORT CIRCUIT WARNING

1 2 3 4

Summary of Contents

Page 1 - MODELS PSAFP1 & PSAFP2

1 IDEAL FOR LIMITED SPACE APPLICATIONS SENSE FERROUS & NON-FERROUS METAL OBJECTS TO “ZERO SPEED” 3-WIRE NPN TRUE OPEN COLLECTOR OUTPUTS 2

Page 2 - DIMENSIONS In inches (mm)

100%APPROX. 65%APPROX. 60%APPROX. 50%APPROX. 40%MILD STEELSTAINLESSMERCURYLEADBRASSSTEELMATERIAL% SENSING DISTANCENominal sensing range x % sensingdis

Page 3 - ORDERING INFORMATION

ORDERING INFORMATIONMODEL NO. DESCRIPTION PART NUMBERPSAFP1 2 mm Flat Pack Rectangular Proximity Sensor PSAFP100PSAFP2 10 mm Flat Pack Rectangular Pro

Page 4 - LIMITED WARRANTY

LIMITED WARRANTYThe Company warrants the products it manufactures against defects in materials and workmanship for a period limited to two years from

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