MecLock Safeguards

222 www.strasser-gmbh.com - sales@strasser-gmbh.com MecLock_Catalog_2021_CAT_2101-04_EN_INT Technical Annex Drive concept and terminal designation servomotor Drive concept servomotor All servo-electrically driven MecLock safeguards have a positioning motor with integrated controller and po- sitioning control. Electrically driven MecLock safeguards are connected by the customer via a power cable (230 V or 400 V) and a signal cable (24 V). The driving data records (position, speed) and motor parameters are stored in the motor control unit at the factory to ensure fast commissioning.The control of the factory-provided driving data records for “Opening”, “Closing” and “Intermediate position” can be carried out either via the hardware I/O‘s (PLC) or Profinet (optionally available). The intermediate position is set ex works to half the stroke of the MecLock safeguard. For versions with bus connection, the driving data records stored in the drive must also be used. Only more information on the status of the motor can be called up. The function blocks for the Profinet variant are available from Strasser GmbH. The servomotor can also be configured with STO (Safe Torque Off) inputs. The option STO is not absolutely necessary for safe operation of MecLock safeguards. As a rule, the STO version is often selected in combi- nation with a Profinet interface for the servomotor, in order • to maintain the 24 V supply in the event of an emergency stop of the machine and then only to switch off the STO inputs or • to provide additional protection against unintentional opening of the MecLock protective device (e.g. protection of laser cells) in certain applications. A programming set is available as an accessory for diagnostic purposes or to change the motor parameters (see page 178) . Operation with motor parameters other than those set in the factory is only permitted after consultation with Strasser GmbH.