Monthly Archives: September 2017

Components of the Relay

The relays are adjusted from approximately three seconds to thirty minutes with high precision, always varying according to the type of operation, they can even obtain a delay in the energization, which basically refers to the actuation of their keys in a period after their connection, the returning to sleep after being turned off or de-energized. The deenergizing delay operates with the keys upon activation, so the keys should only return to sleep after deactivation. The button used to select the delay time is installed on the relay panel.

Relays have an effective digital electronics, which allows high accuracy, repeatability and immunity to different types of noise that may occur. Designed according to international standards, reles enable a compact and safe solution in boxes with reduced dimensions for rail mounting. In the case of timers, they consist of electronic components which, depending on the set times, result in the switching of an output signal according to its specific function. They are widely used in automation of machines and industrial applications, such as starting motors and control panels.

Basics of Couplings

The couplings are very useful in transmitting the torque from the motor to the driven machine. It is recommended to use flexible couplings that are capable of absorbing minor misalignments during the process of operating the device. The direct coupling is recognized when the axis of the electric motor is directly coupled to the axis of the driven load, without the need for any transmission element. When using any type of coupling, it is important to observe all the factors for effective operation, such as using suitable tools to assemble and disassemble the couplings, thus avoiding possible engine damage.

SKF-Bearing 22222 E

Direct coupling offers some advantages, has significantly lower cost, greater safety against any type of accident and still takes up less space. The maximum loads and speed limits reported in the couplings and engine manufacturers’ catalogs can not be exceeded. Leveling and alignment of the motor must be performed. Engines driven without coupled transmission elements must have their cotter pinned firmly or removed in order to prevent accidents.