Safety & Technology
Legal requirements for machine doors
The productivity of the machine tool can be increased significantly by fast doors. Operators can be relieved through automatic doors. High door speed shortens the cycle times of fabrication machines.
Doors, partition doors or guards may not itself be a danger to the operator. Door drives of Langer & Laumann Ing. Büro GmbH meet the high safety standards in engineering.
| application door, gate, hatch, hood, window | regulation for force on door panel | maximum clamping force on door panel | maximum kinetic force on door panel |
|---|---|---|---|
| bus doors | 2001/85/EG | 300 N | - |
| train doors | prEN 14752 | 300 N | - |
| automotive window automotive sunroof | 2000/4/EG FMVSS 118 | 100 N | - |
| doors and gates | EN 12453/12445 | 400/1400 N | 25 N |
| automatic doors | DIN V 18650-1 | 400/700/1400 N | 80 N |
| doors and gates | EN 60335-2-95 | 400/600 N | 25 N |
| lift doors (with reversing function) | EN 81-1, EN 953 | 150 N | 10 J |
| separating protection device (with reversing function) | EN 953 | 150 N | 10 J |
| machine tools turning machines protection doors (with reversing function) | EN 23125 machine tools - safety - turning machines | 150/400/1400 N | 10 J |
| machine tools grinding machine protection doors (with reversing function) | (planned DIN EN) ISO 16089 EN 13218 machine tools - safety - turning machines - stationary grinding machines | 150/400/1400 N | 10 J |
The products of Langer & Laumann Ing. Büro GmbH can be parameterised in the different application areas.
Security functions of door and safety door drives
STO (Safe Torque Off) door drive for machine safety doors
The most common safety feature is STO (Safe Torque Off), which ensures that no torque-generating energy is applied to the motor and prevents accidental starting of the motor. If the door drive recognizes an obstacle with a force of about 150N in door-close direction, the internal STO function is activated and the door drive stops immediately. Afterwards it opens several millimeters (depending on settings) and holds the position so that the obstacle can be removed from the passage area.
SLS (Safe Limited Speed) door operator for machine safety doors
The SLS (Safe Limited Speed) safety function checks that the door drive does not exceed a certain speed or a speed limit. The SLS function is used, if a person is in the passage area of a machine tool and the security for this person is guaranteed only at a reduced speed of the machine.
SLS is used for example in machine maintenance and adaption or manually threaded material, wherein the operator must enter the danger area of the machine. In order not to endanger the operator and to avoid injuries, the clamped material may only spin at a reduced speed.
SLT (Safe Torque Limited) door drive for machine safety doors
The SLT (Safe Torque Limited) security function prevents the motor from exceeding to not exceed the specified torque.
Compatibility
DESINA for Machine Tools and Production Systems
DEcentralized and Standardized INstAllation technology (DESINA) for machine tools and production systems describes the standardization of electrical, hydraulic and pneumatic installation of automated machine tools and production systems.
PROFINET Communication
PROFINET (Process Field Network) is an open industry Ethernet standard of Profibus & Profinet International (PI) for the machine tool and automation industry. Profinet uses the TCP / IP protocol, is real-time Ethernet-enabled, and allows the integration of fieldbus systems.
Explosion Control ATEX
Safe working for the user
Safety at milling centers
Protective door drive for machine-tools have EN ISO 23125 standards and EN ISO 13849-1 Performance Level "d" standards.