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PROXIMITY CONTROLS

Phone: 219/879-8000 www.dwyer-inst.com

A DIVISION OF DWYER INSTRUMENTS, INC.

Fax: 219/872-9057 e-mail: [email protected]

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.

Series PSC/PSI Proximity Sensors

Specifications – Installation and Operating Instructions

INTRODUCTION - Proximity Sensors

The Proximity Controls range of proximity sensors includes induc-

tive and Capacitive proximity switches and a Test unit. These are

listed and stocked in our catalog for fast service. Should you need

a non-listed varient please contact the sales office.

Inductive (PSI) switches will detect all metals. Capacitive (PSC)

switches will detect nearly all solids, powders and liquids. The A-

800 Test Unit will give a functionality test to all versions stocked in

the catalog and will test most three wire DC proximity switches

from other manufacturers.

SENSING DISTANCE

Sensing ranges refer to a 1 mm thick square target of earthed mild

steel with sides of 3 x the nominal sensing distance. If the target

is a different material, or of another size, there will be a variation

in the sensing distance.

INSTALLATION (MECHANICAL)

Flush Mounting

Units designed for flush mounting, including all inductives listed in

the catalog, may be fitted in surrounding metal as shown.

Non-Flush Mounting

Units designed for non-flush mounting, including Capacitive

switches, must be separated from teh surrounding metal as

shown.

NOTE: Capacitive switches can, if required, be tuned down to be

fitted flush in metal. See section on sensitivity adjustment.

INSTALLATION (ELECTRICAL)

Single Units

DC units have transistor output, and normally have three wires,

but NAMUR standard DC sensors have only two wires.

3 Wire DC Switch

2 Wire DC Sensor

Note that units with two wires must be connected to their power

supply with a load in series, or they will be damaged. Consult cat-

alog for load rating.

Logic Interface

Proximity sensors may be interfaced with most types of industrial

logic. Most DC units are open collector type and therefore require

an external pull up resistor when used with TTl as shown.

Note that 3 wire DC-Compact V3 bodied switches are designed for

use directly with TTL and have a built-in pull up resistor.

Multiple Units: Parallel

DC sensors may be connected directly in parallel as in shown. The

number (N) of switches is usually only limited by the availability of

sufficient supply current. Note that the compact V bodied switches

have an internal pull-up resistor with a resistance of 12 kilohms.

The maximum number of compact switches in parallel is:

N=Rating Load Current (mA) x 12 Kilohm / V supply.

MATERIAL

Mild Steel

Cast Iron

Aluminum Foil

Stainless Steel

Brass

Aluminum

Copper

Water

PVC

Glass

Ceramics

Wood

Beer

Coca Cola

Lubricating Oil

CAPACITIVE

1.0

0.9

0.5

0.4

from 0.2

0.9

0.1

INDUCTIVE

1.0

1.1

0.9

0.7

0.4

0.35

0.3

0.0

MATERIAL FACTORS

Flush Fitting

Non Flush

Fitting

A= Not Less

Than 3d

Bulletin E-81-PS

E-81-PS:PS bulletin 2/4/10 8:05 AM Page 1

1 2 3 4

PROXIMITY CONTROLS 1

Résumé du contenu

Page 1 - PROXIMITY CONTROLS

PROXIMITY CONTROLSPhone: 219/879-8000 www.dwyer-inst.comA DIVISION OF DWYER INSTRUMENTS, INC. Fax: 219/872-9057 e-mail: [email protected]. BOX 37

Page 2

Multiple Units: SeriesThe maximum number of DC sensors connected in series is limit-ed by the supply voltage (V supply), the voltage drop across aclos

Page 3

INSTALLATION AND WIRING INSTRUCTIONS• INDUCTIVES• CAPACITIVES• TEST UNITINTRODUCTIONThe Proximity range includes inductive and Capacitive proximityswi

Page 4

Multiple Units: SeriesDC the maximum number of DC sensors in series is limited by thesupply voltage (V supply) the voltage drop across a closed switch

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