Press Release
PI.9.08.EN
Mauerstetten, 03.03.2015
Long version
Smart switching – adapted braking
New electronic braking torque regulation for
ROBA-stop® safety brakes
The new, intelligent braking torque control module
ROBA®-torqcontrol by mayr® power transmission
makes it possible to decelerate devices and machines
evenly and gently. This innovative and economically
attractive solution is pre-destined for application in
smart, interconnected machines.
Nobody would even think of using the handbrake or parking
brake when a car is going at full speed. In order to
decelerate the car as required, a driver would use the foot
brake. Gradual, even deceleration is also often desired for
devices and machine applications with dynamic braking
actions. However, as safety brakes – in contrast to car
brakes – can only distinguish between two operating
conditions due to their design, namely “braking torque
present” and “no braking torque present”, every braking
procedure is carried out with the maximum braking torque
available. With the new, intelligent braking torque control
module ROBA®-torqcontrol, mayr® power transmission offer
an economically attractive solution to generate a variable
braking torque for ROBA-stop® safety brakes, making it
possible to decelerate machines evenly and gently.
Continuous braking torque changes when in operation
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 new module ROBA®torqcontrol by mayr® power transmission, electronic braking
torque regulation is possible. Using the new system, the
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 new 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.
Prerequisites for a smart machine
The new, intelligent switching device ROBA®-torqcontrol by
mayr® power transmission, which is operated with 24V or
48V DC voltage, 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.
With the new braking torque control module ROBA®torqcontrol, mayr® power transmission provide the
possibility to build up control circuits and brake movements
intelligently – ideal prerequisites for application in the smart,
interconnected machines of the future.
Chr. Mayr GmbH + Co.KG
Eichenstraße 1, 87665 Mauerstetten
Tel. 08341/804-0, Fax 08341/804-421
www.mayr.com, E-Mail: info@mayr.com
Fig. 1:
File: F-6-48-Bild1.jpg
With the new, intelligent braking torque control
module ROBA®-torqcontrol, mayr® power
transmission offer an economically attractive
solution for the generation of a variable braking
torque for ROBA-stop® safety brakes.
Fig.: mayr® power transmission
Fig. 2:
File: F-9-03-Bild3.jpg
The new, intelligent control device ROBA®torqcontrol makes targeted braking torque regulation
possible. The device can be operated with 24V or
48V DV and can control brakes with a coil nominal
current of 10A or 5A.
Fig.: mayr® power transmission
Please send a copy to: Simone Winkler
Communications
Tel. 08341/804-2332
Fax 08341/804-492332
E-Mail: simone.winkler@mayr.de
Press Release
PI.9.08.EN
Mauerstetten, 03.03.2015
Short version
Braking movements intelligently
With the new, intelligent braking torque control module
ROBA®-torqcontrol for safety brakes, mayr® power
transmission offers an innovative possibility to
decelerate devices and machines evenly and gently.
In contrast to car brakes, safety brakes can only distinguish
between two operating conditions due to their design,
namely “braking torque present” and “no braking torque
present”. This is the reason why every braking procedure is
carried out with the maximum braking torque available. Just
as in a car, gradual, even deceleration is also often desired
for devices and machine applications with dynamic braking
actions. The new, intelligent braking torque control module
ROBA®-torqcontrol by mayr® power transmission therefore
offers an economically attractive solution to generate a
variable braking torque for ROBA-stop® safety brakes,
making it possible to decelerate machines evenly and
gently.
Continuous braking torque changes when in operation
Up to now, brakes have been dimensioned with regard to
the maximum load where devices with variable loads, for
example forklift trucks, are concerned. In case of partial
loads, a stronger deceleration than necessary with the full
braking torque 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 new, intelligent
control module by mayr® power transmission, electronic
braking torque regulation is possible. Using the new
system, the 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 smoothly, adapted
to the respective system requirements. Using the new,
intelligent control device ROBA®-torqcontrol by mayr®
power transmission, 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. With the new braking torque
control module ROBA®-torqcontrol, mayr® power
transmission provide the possibility to build up control
circuits and brake movements intelligently – ideal
prerequisites for application in the smart, interconnected
machines of the future.
Chr. Mayr GmbH + Co.KG
Eichenstraße 1, 87665 Mauerstetten
Tel. 08341/804-0, Fax 08341/804-421
www.mayr.com, E-Mail: info@mayr.com