ELECTRONIC DESIGN
REPAIR
AUTOMATION
AUTHORIZED DISTRIBUTORS SIEMENS, TRAINING
TECHNICAL SERVICE
RETROFIT
Physical norm RS-485
The EIA set a new standard: RS-485. Introduced in 1983, is an improved version of the RS-422. Multipoint interface is considered as communication and allows up to 32 transceivers on a common data bus, so it has the third state (enabled) so that no collisions in the channel decomunicación.
Colors for pushbuttons, illuminated pushbuttons and indicator lights
The standard DIN EN 60073 (VDE 0199): 01.94, like the IEC 73, clearly defines the meaning of certain colors. This is intended to improve the safety of service personnel and to facilitate operation and maintenance of electrical installations and equipment.
In addition , the standard DIN EN 60 204-1 (VDE 0113 Part 1): 06.93 , also indicates the colors of the buttons , illuminated pushbuttons and indicator lights . Both publications agree mostly .
Read more: Colors for pushbuttons, illuminated pushbuttons and indicator lights
Protection classes through Case (IP Code) against contact, foreign bodies and water
Protection classes through Case (IP Code) against contact, foreign bodies and water
2nd edition of IEC 529 standard was published in 1989 , after a survey of the countries of CENELEC , in 1991 , it was determined that these countries would adopt this International Standard without modification . In 1991 the European standard issued also 60 529 ,
Read more: Protection classes through Case (IP Code) against contact, foreign bodies and water
Aligning a photoelectric sensor
A correct alignment of the sensor will produce a solid solution which will require less maintenance.
Polarized retroreflective or retroreflective
Point the sensor to the reflector (or reflective tape). Move the sensor slowly to the left until the reflector is no longer detected. Mark this position, now slowly move the sensor to the right and mark the position where the reflector is no longer detected.
