A guided safety
acceptance test, an assistance system for mobile machines, a new emergency stop
switch as well as an economical protective door system, and sensorless
standstill detection, are the safety news from January that we would like to
present to you.
Guided safety
acceptance test for Sinamics frequency converters
With the Sinamics
Startdrive commissioning software, Siemens supports machine builders in
validating the safety functions of Sinamics frequency converters with a guided
acceptance test. With Sinamics Stardrive, Siemens offers a tool for integrating
drive hardware into the TIA Portal engineering framework. The guided acceptance
test of the safety functions contained therein is available for the frequency
converters of the Sinamics G and S series and complies with EN ISO 13849-2 and
IEC 62061.
The safety
acceptance test is characterized by very simple user guidance. An assistant
guides the user step by step through the acceptance process and checks whether
the safety functions have been correctly parameterized and are being carried
out correctly in the respective application. A standard-compliant acceptance
report is then automatically created for the documentation. With the safety
acceptance test integrated into Sinamics Stardrive, Siemens supports machine
builders in performing the legally required validation of the safety functions
simply and safely.
Safety system for
mobile machines
A new driver
assistance system from IFM for mobile work machines is based on the mobile 3D
camera O3M, which uses the PMD time-of-flight method to determine the distance
to a person in the camera's field of view. The active obstacle detection
monitors up to 6 danger zones behind the vehicle and warns the driver at an
early stage of impending collisions. The warning is given optically and
acoustically. Also, the warning is displayed on a 7 "monitor installed in
the cockpit. The system also detects reflective materials, for example on safety vests, earlier
than that of objects.
New emergency stop
switch with LED status display
With large
machines and systems, there are usually many protective doors that have to be
secured. In addition to monitoring these protective doors, each machine must
also be protected with one or more emergency stop devices by the Machinery
Directive. For cost reasons, the safety door monitoring and the emergency stop
function is conventionally wired in series but still separated from one
another, so that several safety relays are required. With the Smart Safety
System from Bernstein, this complex wiring is a thing of the past.
In addition to the
safety sensors SRF (Safety RFID) for monitoring the protective doors, the
emergency stop devices SEU (Safety Emergency Unit) can also be wired in the
same safety circuit. Thanks to the patented Daisy Chain Diagnostic System
(DCD), extensive diagnostic data for each connected device can be evaluated,
for example via Ethernet. With the new illuminated emergency stop SEU, this
data can no longer only be visualized on an HMI ( Human-Machine Interface ),
but is now also quickly visible directly on the device thanks to the large LED
status display.
Safe monitoring of
movable guards
The new protective
door system PSENmech with guard locking from Pilz offers an economical basic
solution for the safe monitoring of movable guards. The protective door system
with head section and 3D actuator made of metal is insensitive to water, dirt,
and dust. With it, the safety door is securely locked until the machine or
system is stopped. An unintentional restart of the dangerous movement is thus
prevented. Also, PSENmech with guard locking can be supplemented with an escape
release and emergency release, which makes it ideal for use on accessible
doors. The protective door system PSENmech with guard locking is suitable for
personal and process protection in numerous industries. The choice between
different actuators and several actuation entry directions also makes
installation quick, easy, and flexible for the user. The protective door system
thus ensures high availability.
Sensorless
standstill detection of drives
If dangerous
overtravel movements are to be expected on a machine or system, a combination
of a safety locking device (on the protective door) and a standstill monitor
(in the control cabinet) for the necessary security. With the SSW303HV, the
Schmersal Group is now introducing a new sensorless standstill monitor that
offers significant improvements compared to the previous models in the AZR and
FWS series. The new device replaces fourteen variants of the previous product
range. This is made possible, among other things, by the use of a wide-range
power supply unit for all common operating voltages from 24 VDC / 24 VAC to 230
VAC. The increased temperature range from -25 to 55 ° C opens up additional
areas of application. Another advantage is the compact design: The SSW303HV
only takes up 45 mm width in the control cabinet. The pluggable and coded
connection terminals create the prerequisites for quick and error-free
installation. An additional signal contact provides information about the error
status of the block.
