MecLock Safeguards

216 www.strasser-gmbh.com - sales@strasser-gmbh.com MecLock_Katalog_2025_CAT_2505-10_EN_INT Configuration steps Description Configuration steps Description Order code Proximity switch cylinder The position sensing function determines the end position of the pneumatic cylinder for pneumatically driven MecLock safety guards. NZ10 (closed end position): No electrical signal is generated when the MecLock protection system (purely mechani- cal anti-trap protection) is triggered. There are two ways of detecting a triggering of the MecLock protection system in the machine control system: Without option NZ10 (runtime monitoring) Runtime monitoring from the start of the closing signal on the control unit until the feedback signal of the safety switch for the closed end position. The MecLock protection system was triggered if the runtime was exceeded or the pane frame did not reach the end position within the specified time. To unlock the mechanical MecLock protection system, the MecLock safeguard must be actuated back to the open end position. With option NZ10 (signal comparison) Signal comparison of proximity switch and safety switch. The MecLock safeguard is also power-operated in the closing direction by the pneumatic cylinder. If the MecLock protection system is triggered during the closing process, the pneumatic cylinder is automatically disengaged. The pneumatic cylinder then moves further into its closed end position. After the MecLock protection system is triggered, the interlocked pane frame of the MecLock safeguard remains in an intermediate position with the attached actuator of the safety switch, so that the safety switch cannot be confirmed in the closed end position. By sensing the closed end position of the pneumatic cylinder, a triggering of the MecLock protection system can be detected by a signal comparison without a time function. To unlock the mechanical MecLock protection system, the MecLock safeguard must be actuated back to the open end position. NZ20 (open end position): Detects the open position of the pane frame. This option is useful, for example, to avoid collisions with passing product carriers or if the open position is required to control other processes in the machine. NZ30 (closed and open end position): Combination of option NZ10 and NZ20 NZxx Proximity switch type The proximity switch has a plug connection on the switch within the MecLock safeguard. The associated connection cable is routed to the outside with non-terminated cable end. The standard cable length of the connection cable is 10 m. The freely available cable length from the cable outlet depends on the size of the MecLock safeguard (stroke / clear width) and the position of the energy connection. NZT10 Ducted exhaust air The control unit can generate sound emissions of over 80 dB for a short time during venting. If it is concealed in the machine, this is usually not a problem. If the control unit is installed open in the immediate vicinity of the operating personnel or the machine is installed in a very noise-sensitive area, the option “Ducted exhaust air” (GFA10) is recommended. With this option the control unit is equipped with an additional flat plate silencer, which reduces the short-term exhaust air noise to approx. 65 dB. The GFA option increases the closing time of the MecLock safeguard by approximately 0.2 seconds. GFA