1/1 1 Contents 1—Technical Information Degrees of protection provided by enclosures . . . . . . . . . . . . . . . . . . . . . . . . 1/2 Wire size chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/5 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/6

1/2 Degrees of protection provided by enclosures IP code Degrees of protection against the penetration of solid bodies, the penetration of water, and the access of personnel to live parts The European standard EN 60529 dated October 1991, IEC publication 529 (2nd edition - November 1989), defi nes a coding system (IP code) for indicating the degree of protection provided by electrical equipment enclosures against accidental direct contact with live parts and against the ingress of solid foreign objects or water. This standard does not apply to protection against the risk of explosion or conditions...

1/3 Degrees of protection provided by enclosures IK code Degrees of protection against mechanical impact The European standard EN 50102 dated March 1995 defi nes a coding system (IK code) for indicating the degree of protection provided by electrical equipment enclosures against external mechanical impact. Standard NF C 15-100 (May 1991 edition), section 512, table 51 A, provides a cross-reference between the various degrees of protection and the environmental conditions classifi cation, relating to the selection of equipment according to external factors. Practical guide UTE C 15-103 contains...

1/4 1| Degrees of protection provided by enclosures NEMA and UL classifi cation The enclosures provide protection for the equipment against environmental conditions and help protect personnel against the risk of incidental contact with the equipment. The following classifications (Types) are required according to the required uses and descriptions: Type Use Description 1 Indoor use. The enclosure provides protection for personnel against incidental contact with the internal equipment and protects said equipment against dirt. 2 Indoor use. The enclosure provides protection for personnel against...

1| 2 3 4 5 6 8 9 10 7 1/6 Glossary Technical Information A Actuator An actuator is the mechanism of the switch or enclosure which, when moved as intended, will operate the contacts, i.e. lever arm, plunger, etc. Adjustable Length Used where length of arm required is not known when devices are ordered or where length requirements vary. Adjustable Sensitivity The ability of the sensor to discriminate between different levels of light incidence on the receiver. Used primarily to black out background objects, discriminate between materials, or transparent objects. Alignment Relation of the emitter...

1 2 3 4 5 6 8 9 10 7 1/7 Glossary (continued) Technical Information Barrier Device An intrinsically safe barrier inherently limits the current and voltage that can be transmitted into the hazardous location and has redundant circuitry in case of component failure. Beam Pattern In the operation of thru-beam and retrorefl ective sensors, a degree of deviation from absolute alignment of the emitter and receiver (within which the beam intensity is suffi cient to activate the receiver) determines the beam pattern. Break-Before-Make The normally closed contact opens before the normally open contact...

1| 2 3 4 5 6 8 9 10 7 1/8 Color Registration Sensor The color registration sensor is a highly specialized diffuse proximity sensor that has the ability to detect fi ne changes in contrast on a surface. But unlike the standard diffuse proximity sensor, this type of unit uses a powerful lens system and must be positioned at a specifi c focal distance from the target. Complementary Outputs Sensors with both N.O. and N.C. outputs that change state simultaneously. Conducting Path Includes all terminals, inserts, stationary contact material resistance, movable contact material resistance, movable blade...

1 2 3 4 5 6 8 9 10 7 1/9 Current Sourcing PNP output - an output type such that when it is ON, current fl ow is from the device into the load. Output is normally low. The sensor “sources” current to the load. The load is connected between the output lead and the negative ground lead of the supply. Considered safer than NPN outputs due to the way current fl ows when wired up. CW Clockwise only (for lever type limit switches). D Dark Operation (Mode) Dark mode output is energized when the target is present (proximity output is energized when target is not detected). Output mode that will result...

1| 2 3 4 5 6 8 9 10 7 1/10 Direct (positive) Opening Contact (Also known as positive opening contacts in Europe) - A normally closed (N.C.) contact element coupled with the switch actuator via a nonresilient (non-elastic) member so that full contact opening is obtained when the actuator is moved through the direct (positive) opening travel by applying a direct (positive) opening force against the N.C. moveable contact assembly. The contact element will shear open in the event of sticking contacts or broken springs. Available on both snap action contacts and slow make and break contacts. Proper...

1 2 3 4 5 6 8 9 10 7 1/11 Flat Steel Primarily used where high temperatures could cause standard arms to soften and therefore not provide a secure grip on the lever arm shaft, causing arm slippage. These arms are also chosen where the arm needs to be bent slightly to line up with existing cams. Flush Mounting Type Flush mounting switches are used where a machine cavity is provided and the standard position switch box is not required. A gasket on the fl ush plate prevents entrance of contaminants. Wiring is brought in through the machine cavity. Focusable Diffuse A diffuse refl ective photoelectric...

1| 2 3 4 5 6 8 9 10 7 1/12 Initial Position Position of switch actuator when no external force (other than gravity) is applied to the actuator (see Free Position). Interface Translates the presence of a target into an electrical signal. Internal Refl ection Internal refl ection occurs whenever a light ray strikes the surface of a medium whose refractive index is less than that of the medium in which the light is traveling. An example of this is a light source in water, where light is internally refl ected from the surface of air. The amount of light that is refl ected depends upon the angle at...