Safety locking devices

Safety switches with locking device keep doors locked and thus prevent unauthorized entry or access, thereby protecting persons and processes. The L series features a wide range of variants for different application cases, from devices with mechanical actuators to devices with an RFID‑coded actuator for maximum manipulation protection as well as integrated command buttons. With their robust design, all devices are designed for rough industrial applications.

Safety locking devices L100, L200, L250, L300

Advantages for you

Secure locking: With a locking force of up to 9,750 N, doors remain securely locked even under extreme loads
Manipulation protection: The RFID‑coded actuators offer optimum protection against manipulation. Special installation measures are not necessary.
Fully guarded: Integrated command buttons and emergency stop as well as the matching door handle enable complete safety functions to be easily implemented at safety doors

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Application

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Monitoring of doors and flaps with locking device, for long stopping times

Requirement:
Areas with hazardous movements can be entered via safety doors to allow maintenance. If the movement does not stop immediately after the door is opened, the door is to be guarded by a safety switch with locking device.

Solution:
The robust safety switches with locking device of the L series keep safety doors securely locked until access is released by an electric signal. The series includes standard designs, devices with integrated operational controls as well as devices with RFID‑coded actuators.

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Monitoring of doors and flaps, with locking device for process protection

Requirement:
When doors or flaps are opened, the process is allowed to stop only at defined positions in order to avoid scrap or maintenance work when the process starts up again. The doors or flaps are to be released only when these positions are reached.

Solution:
The L series safety switches with locking device keep safety doors locked until the process control sends an electric release signal.

Highlights

Complete guarding with just one device

The optional command buttons of the L300 safety locking device simplify the setup of safety functions at safety doors. With the integrated buttons for request, reset and emergency stop, the compact device provides a complete solution for the safety system installation at an access door. This simplifies wiring and saves space.

Escape unlocking with panic button

The optional escape unlocking function (panic button) enables the actuator to be unlocked immediately and the door to be opened from inside the danger zone. The ergonomically optimized button allows the operator to then leave the danger zone if he is inadvertently locked inside. The device also functions if the power supply fails.

Designed for reliable operation

The joint at the actuator and the large, chamfered opening on the device minimize the risk of collision between the sensor and actuator and prevents damage even with imprecisely closing doors. The unobstructed opening allows accumulated dirt to be simply pushed out on the rear side. The special design thus guarantees maximum reliability and availability.

Door handle with lockout-tagout

The adjustable door handle, which can be mounted on the right or left, ensures quick and easy installation of the L300 safety locking device on swing doors and sliding gates. The extremely robust metal construction supports the benefits of door centering by means of the joint on the actuator. The lockout‑tagout device prevents operating personnel from being locked inside the danger zone by using individual padlocks. For this purpose, the safety mechanism is pushed downward and the lock inserted.

Technical properties

	L100, L200	L250	L300
Type in accordance with EN ISO 14119	Type 2 Interlock device with guard interlocking	Type 4 Interlock device with guard interlocking	Type 4 Interlock device with guard interlocking
Performance Level / SIL	Up to PL e / SIL 3	Level PL e / SIL 3 with a single device	Level PL e / SIL 3 with a single device
OSSD safety-related switching outputs		x	x
RFID‑coded actuator		xx	x
Locking force	1,100 N (L100), 2,800 N (L200)	2,100 N	9,750 N
Housing	Technopolymer (L100), metal (L200)	Technopolymer	Metal
Degree of protection	IP 67	IP 67 / IP 69K	IP 67 / IP 69K
Escape unlocking with panic button	L200	x	x
LED display unit for on-site diagnosis	L200	x	x
Integrated command buttons and E-Stop button			x