MecLock Safeguards

213 MecLock_Katalog_2025_CAT_2505-10_EN_INT www.strasser-gmbh.com - sales@strasser-gmbh.com Configuration steps Description Order code Speed Actuator (continued) Pneumatic drive: All pneumatically driven MecLock safeguards are supplied with control units and throttles adjusted to the MecLock safeguard (see p .264) . The S10 and S20 control units supplied are 5/3G directional control valves with closed centre position. Due to this type of valve, the MecLock safeguards stop in the event of a power failure without activating the MecLock system. The S20 control unit has an additional damping function to ensure gentle braking of the MecLock safeguard in the end positions even at higher speeds. To control the S10 or S20 control unit, two control solenoids for opening and closing the MecLock safeguard must be connected by the customer. The standard operating pressure is 6 bar. If the operating pressures differ, the S10 or S20 control unit must be set to the required operating pressure in the factory. It is not permitted to operate MecLock safeguards with customer-side valves or valve terminals. Servo-electric drive: All servo-electrically driven MecLock safeguards have a positioning motor with integrated controller and positioning control (see p .270) . 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. In addition to supplying the logic part on the servo motor, the 24-volt signal voltage is also used to supply power to the internal sensors of the MecLock safeguard and must be established even if the optional Profinet interface is used exclusively. The servomotor can also be configured with STO (SafeTorque 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 combination with a Profinet interface for the servomotor, in order 1. 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 2. 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 p .228) . Operation with motor parameters other than those set in the factory is only permitted after consultation with Strasser GmbH. P E