The Defender guarding system features a laser transmitter and receiver that are mounted to the upper beam of the press brake. A continuous laser field protects the zone directly below the punch tip allowing the operator to hold the work piece as the tools close at high speed. If an obstruction is detected the machine is automatically stopped.

The Defender system can be retrofitted to most existing press brake models and provides a complete safety solution that includes optical protection, monitoring of the press brake control commands and actions, control and monitoring machine safety elements and more.

Optical protection

The single laser field is processed by the receiver and divided into three continuous zones to detect obstructions entering from the front, sides and rear of the tool area. The front zone provides protection forward of the tool while the middle zone protects the area just behind the tip of the punch. The rear zone provides additional protection for the open gaps created when segmented tooling is used.

Lzs 1

Sensor arrangement

The protective zones are independently and automatically muted to suit different shape work pieces such as box bending with side flanges. This enables parts to be formed safely at high-speed to achieve maximum productivity. This close proximity protection allows the operator unrestricted access to the point of operation for increased productivity and unlike traditional light curtains, reduces fatigue by eliminating the need to continually move in and out of the operating area.

Defender Optical Arrangement

Advanced machine monitoring

AutoSense is an automatic monitoring technology that tracks machine operation and performance in real time. AutoSense automatically monitors control commands, motion, direction, speed and stopping performance to maintain a high level of machine and operator protection. AutoSense also guarantees compliance with international safety standards that mandate automatic monitoring of machine overrun and safe speed.

Additional monitoring

Sentinel Plus provides optional monitoring of additional machine safety elements including emergency stop buttons plus side and rear gate interlock switches with real-time status displayed on the user interface panel.

External Device Monitor (EDM)

Sentinel Plus provides the option to connect and monitor up to four external devices such as valve sensors or relays. The EDM response time is configurable and the status of each external device is displayed on the user interface panel in the event of a device failure.

Intuitive user interface

The Defender HMI displays system and machine status in real time and provides the operator with simple to follow instructions and messages making the system very easy to operate. The active status of the optical protection is clearly displayed and the operator can quickly change guarding modes with the press of a button.

The panel features a magnetic backing allowing it to be moved and placed on the front of the machine within easy reach and view of the operator.

161A1040 Defender

Mounting bracket options

Defender is available with two mounting bracket options. A range of vertical lengths are available to suit various machine and tooling applications.

Economy brackets

Economy Brackets are supplied as standard and suit machines up to 4 metres in length. The brackets are manufactured from an extruded alloy and feature a two part sliding design for quick vertical adjustment. The brackets are easily adjusted and locking into position with a simple locking handle. The receiver status LEDs provide a clear indication of when the system is aligned, so the tool change process is very simple and takes only a matter of seconds.

Economy Brackets

Linear brackets

Linear Brackets are available as an optional upgrade for machines up to 8 metres in length. The brackets are manufactured from an extruded high-tensile alloy for greater rigidity and tolerance to machine vibration while linear bearings and rails provide precision vertical adjustment of the laser transmitter and receiver.

During tool change, a spring loaded locking pin keeps the transmitter and receiver clear, allowing the tools to be loaded from either end of the press brake. After tool change, the transmitter and receiver are easily moved into position in a matter of seconds.

Linear Brackets
Defender Press Brake Guarding System
Hardware TUV CE Certified SIL 3 safety controller with encoder feedback system
Software CE Certified Kernel Software with application software interface
Technology AutoSense
Laser Transmitter / Receiver
Laser transmitter CLASS 1 Planar laser
Receiver Multi-sensor photocell receiver
Optical range 8 metres / 26 feet
Minimum object detection resolution 4mm
Connector type M12 8 pin
Tool compatibility V tools and non standard tools
User Interface Panel
Display 4.3" widescreen colour graphics display
Connector type M12 8 pin
Mounting Brackets
Economy brackets Supplied as standard
Linear brackets Optional - Available in 520mm / 700mm / 1000mm lengths

Defender hardware and software is TUV CE Certified and compliant with all international press brake safety standards including EN12622, ANSI B11.3-2012, CSA Z142-10 and NR12.

Defender is available in selected countries, supplied and installed from Lazer Safe Retrofit Dealers, the original press brake manufacturer and participating machinery dealers.

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