- April 10, 2015
April 10, 2015 - Mayr announces intelligent braking torque control module that makes it possible to decelerate devices and machines evenly and gently. The module generates a variable braking torque for ROBA-stop safety brakes.
Up to now, brakes have been dimensioned with regard to the maximum load where devices with variable loads, for example forklift trucks, are concerned. However, it is not always expedient to work with the full braking torque. In case of partial loads, a stronger deceleration than necessary can lead to damage to the transported goods or even to sliding of the wheels. If, however, the system detects the operating conditions and converts this information into a default signal for the intelligent control module, electronic braking torque regulation is possible. Using the system, brake specialists have succeeded in continuously changing the contact force on the brake linings and therefore also the braking torque during operation. In this way, machines can be decelerated gently, adapted to the respective system requirements. Furthermore, the braking torque regulation makes it possible to compensate for negative influences on the braking torque consistency in applications requiring a constant braking torque within narrow tolerance limits.
The intelligent switching device is operated with 24V or 48V DC voltage, and can control brakes with a coil nominal current of 10A or 5A. In addition, the resulting clamping force for the brake rotor can be specified to 25%, 50% or 75% of the nominal spring force by means of two digital inputs. Alternatively, a continuous, analogue default signal from 0 to 10V is possible. The switching device determines without using a sensor whether the armature disk is attracted or has dropped. This makes it possible to adjust the overexcitation time automatically as desired. Due to the fact that the intelligent switching device registers the switching condition of the brake, no microswitches or proximity sensors including the respective cabling are necessary as would normally be the case. The device also takes possible wear reserves into account, and, if required, recognises unpermitted high temperatures. With its compact dimensions of 30 mm in height, 69 mm in width and 103 mm in length, it can easily be integrated into control cabinets.