Description
TER 7551 – 7552 Cross Position Limit Switch is designed for controlling the movement of overhead travelling cranes, hoists and complex machine tools. The choice of materials and technical solutions adopted enables the use in harsh operating conditions.
FEATURES of the 7551 – 7552 Cross Position Limit Switch:
- Designed to guarantee excellent performance in the most challenging operating conditions.
- Rods with 4 maintained positions every 90°.
- 4 fixing holes.
- Positive opening NC contacts for safety functions.
- Mechanical life of switches: 1 million operations.
- Operation frequency: 3600 operations/hour max.
- IP protection degree: 7551-7552 are classified IP66 with specific cable clamp M20.
- Extreme temperature resistance: -40°C to +70°C.
- It features die-cast aluminium alloy enclosure, with bushings made of sinterised material and head made of zama to resist any violent impact, chemical aggression and rust and reduce the need for routine maintenance operation on the head.
- All materials and components used are wear resistant and guarantee protection of the unit against water and dust.
OPTIONS:
- 4 snap action switches with 1NO+1NC change-over contacts or slow action switches with 1NC contact.
- 3 outputs for cable clamps to reduce installation time and make wiring easier.
TER has acquired decades of experience in designing and manufacturing position limit switches, providing now five series of position limit switches, used in particular in industrial and construction lifting plants, in the automation industry, in stage technology, in particular to control hoists, winches and machine tools.
These machines operate in difficult thermal conditions (low or high operating temperatures) with great thermal shifts between night and day, and they are subject to a variety of weather conditions (water, dust, UV rays and salt). They therefore need components with a high degree of protection against weather effects, resistance to extreme temperatures, high mechanical and electrical durability and resistance, accuracy in control. All components must be precise, reliable and safe to ensure good handling control, guarantee maximum operating safety, prevent personal injury and damage to objects.
TER range of position limit switches includes aluminium or thermoplastic material limit switches, with single rod or rod with roller, cross rods, “T” rods or with various types of heads and actuators allowing for diversified switch activation modes.
All position limit switches are CE marked and they are manufactured in compliance with the Directives and Standards in force.
Furthermore, position limit switches are EAC certified for the Eurasian markets (Russia, Belarus, Kazakhstan) as proof of the importance given to the quality levels required in different countries.
TER’s aim is to simplify the control of the machines equipped with its devices, designing reliable, ergonomic and intuitive safety products, capable of predicting the demands of the market and becoming the industry benchmark.
At the basis of this company mission is the will to establish a connection between market and company, by giving an increasingly central role to the sales department, seen as a continuous relationship between TER and its customers.
