Parts and components

Value for money: TA Roloff only uses components from certified manufacturers based on long-term supply relationships.

The portfolio of our drive technology ranges from simple, robust quarterturn actuators to upgraded explosion-proof failsafe drives with data bus connection and handheld on-site control with a graphical user interface. We do not use components from low-cost countries and design our designs to be repairable

TA Roloff uses DC motors serially in its drive products. Direct current (DC) motors are superior to alternating current (AC) motors in valve automation. DC motors increase their torque during torque peaks, which valves often have in their travel range. The installation effort is lower, as is the energy consumption. Faster response behavior, precise positioning and high resolution of the travel are positive properties of the DC motor in regular operation.

TA Roloff relies on an integrated control system. TA Actuators can be operated with minimal external installation effort. This is an advantage wherever space needs to be saved, for example when installing in mobile systems. Cost savings occur through particularly simple electrical control.

Does your application require the valve to automatically move to a safety position? TA Roloff drives can be “failsafe” with an integrated auxiliary voltage or with an FM module, i.e. they can automatically move to the safety position in the event of a power failure. This safety requirement applies in particular to power outages in system sections where a central emergency power supply does not help. As an electromechanical unit, the FM module also protects the valve in the event that the valve can no longer be moved to the safety position by motor (gearbox damage).”

TA Roloff drives can also be used to automate valves located in system areas where explosive atmospheres from gases or vapors arise. In these areas, with an electric drive without explosion protection, there is a risk that the explosive atmosphere will penetrate into the drive, ignite through spark formation (when the ignition temperature is reached) and escape through gaps (so-called ignition penetration capability). All explosion-proof TA drives have the type of protection “d II C T6”, which means they use flameproof encapsulation (“d”) to ensure that the surrounding atmosphere consists of gases with the highest ignition penetration capacity (category “C”) and a low ignition temperature (“T 6”). ) cannot be ignited by sparks.

The TA 130 Ex and TA 140 Ex drive series have “increased safety” in the ignition protection class with the letter “e” and, in individual cases, can also be used in areas at risk from explosive atmospheres where electric motors are otherwise not permitted to be used.