In the industrial lifting and material handling sector, the interface between the operator and the machine represents the critical point where productivity meets safety. Pendant control stations are not simple switch enclosures but complex systems designed to ensure smooth, intuitive and, above all, safe control under all operating conditions. TER (Tecno Elettrica Ravasi), with decades of experience in control interface design, sets quality standards for SMEs and major OEMs operating on a global scale.

1. The Importance of Ergonomics in Industrial Control

Ergonomics is not merely a matter of comfort but a fundamental requirement for functional safety. A poorly designed control station can cause muscle fatigue, operating errors and, in the worst cases, workplace accidents. TER solutions such as the Mike, Charlie, SPA, Alpha, NPA, NPA-CP and MIKE-D series are the result of extensive studies of human hand dimensions and natural operating movements.

The ergonomic design, balanced weight and button layout are engineered to allow prolonged use without physical strain. High-strength plastic materials provide electrical insulation and precise tactile feedback, enabling operators to perceive contact activation even when wearing heavy protective gloves.

2. Architecture and Materials: Resistance in Harsh Environments

Industrial control stations often operate in extreme conditions: construction sites, steel mills, ports and petrochemical plants. Material selection is therefore the first factor distinguishing a commercial component from a professional TER solution.

Enclosures are manufactured from self-extinguishing thermoplastic engineering polymers resistant to impact and weathering. Protection against dust and liquid ingress is ensured through high protection ratings such as IP66, IP67 or IP69K, depending on the model. This sealing level is essential to prevent short circuits and internal corrosion, especially in humid environments or where high-pressure washing is performed. In addition, rubber or EPDM gaskets ensure that device integrity remains unchanged even after thousands of high-pressure operating cycles.

3. Auxiliary Circuits and Switching Logic

From an electromechanical standpoint, pendant control stations can manage different control logics. The main distinction is between direct motor control and auxiliary control through PLCs or contactors.

TER auxiliary control stations use contact blocks designed for control loads, ensuring a mechanical life that exceeds one million operations. Modularity is a key feature: each pushbutton can be equipped with 1NO (normally open) or 1NC (normally closed) contacts, one or two speeds. The use of positive-opening contacts is an essential requirement for emergency stop functions, ensuring circuit interruption even in the event of an internal mechanical failure, in compliance with ISO 13850.

4. Overview of Solutions: Mike, Charlie, SPA, Alpha, NPA, NPA-CP and MIKE-D

  • Mike: represents the pinnacle of modern industrial design. With 4 to 15 actuators, it offers unparalleled versatility. Its internal structure can accommodate numerous devices, including selectors, key selectors in various actuation configurations, pilot lights, momentary or maintained mushroom pushbuttons with rotary or key release, and emergency stop devices.
  • Charlie: the symbol of modern and intuitive design, developed by an industrial design studio according to principles such as technical performance, anthropomorphism, futurism and ergonomics. It stands out for its ease of handling and a structure specifically designed to reduce installation time, maintenance costs and machine downtime.
  • SPA: distinguished by robustness and reliability and specifically designed for heavy industry. It features a modular enclosure with actuators arranged on two parallel rows to pair opposite functions while maintaining compact dimensions.
  • Alpha: a proven solution focused on compactness and ease of wiring. Ideal where space savings and rapid maintenance are priorities.
  • NPA: easy to handle and robust, NPA is a classic pendant control station available with 2 to 12 plastic pushbuttons or rubber dustproof pushbuttons and switches with up to three speeds.
  • NPA-CP: direct-control pendant station for industrial machinery with 2 to 8 pushbuttons. Easy to handle and robust, it is ideal for heavy-duty industrial applications.
  • MIKE-D: direct-control station available with 3 actuators (single-speed version) or 4 actuators (two-speed version).

5. Functional Safety and International Certifications

For Italian companies exporting machinery worldwide, regulatory compliance is mandatory. TER products are designed and tested to meet the requirements of major international directives, including the Machinery Directive 2006/42/EC and the Low Voltage Directive 2014/35/EU.

UL certifications provide significant added value for the North American market, ensuring compliance with some of the world’s most stringent electrical safety standards. In addition, CE marking certifies compliance with European health and safety requirements. Investing in pre-certified components significantly reduces the time and cost required to certify the final machine.

6. Customization and Modularity: The Competitive Advantage

One of the factors that makes TER a strategic partner for both SMEs and large companies is its ability to provide fully customized control stations. This goes far beyond selecting the number of pushbuttons: customers can define the entire interface, from button legends and colours to internal contact configurations.

The modularity of the components allows individual worn parts to be replaced without changing the entire device, reducing total cost of ownership (TCO). This flexibility enables maintenance personnel to intervene quickly and minimize downtime, which in industrial environments can cost thousands of euros per hour.

Conclusions

Choosing a pendant control station is a technical decision that directly impacts operator safety and production efficiency. Relying on TER means choosing products developed through continuous technological research and meticulous attention to construction details. Whether for a simple hoist or a complex port lifting system, TER pendant control stations ensure total control, maximum environmental protection and long service life.

Technical Appendix for Installers and Technical Departments

Safe Wiring Procedure for a Pendant Control Station:

  1. Verify that cable cross-sections are compatible with the contact block terminals to prevent overheating.
  2. Ensure the cable gland is properly tightened to maintain the declared IP protection rating.
  3. Use TER jumper links to optimize internal space and reduce assembly time.
  4. Always test the emergency stop button before final commissioning of the system.

Protection and Application Comparison Table:

ModelIP RatingRecommended Application
MikeIP66 / IP67 / IP69KOverhead cranes, shipbuilding, stage technology
CharlieIP65Winches, hoists, overhead cranes, stage technology
SPAIP65Heavy industry
AlphaIP65General machinery control
NPAIP65Overhead cranes, winches, hoists, stage technology
NPA-CPIP65Truck equipment, lifts, car washes, packaging industry
MIKE-DIP66 / IP67 / IP69KTruck equipment, lifts, car washes, packaging industry