press brake light safety curtain, Press Brake Light Safety Curtain Systems

Press Brake Light Safety Curtain Systems



Many safety curtains can be highly effective if used properly. They allow multiple operators access to the press and prevent unauthorized personnel from injuring themselves. They also make it possible to use a foot switch instead of a two hand push button station.

Light curtains increase productivity by allowing multiple operators to be able to use the press and keeps unauthorized personnel safe from injury. It also allows for the use of a foot switch rather than a two hand push button station. There are many different reasons to use light curtains, however, OSHA and ANSI has requirements for the use of light curtains on press brakes. If you want to learn more about the OSHI and ANSI requirements visit our light curtains for press brake safety page which has more specific information. Some options that come with light curtains for press brake safety is floating beams, channel select or canceling, and programmable channel select. While we do not recommend floating beams, channel select or canceling can be useful if it is used the proper way and safely. Programmable channel select can be used, for instance, to ignore only one beam. There are different reasons for using different options of light curtains which is why we have many different packages and options for use to choose from.

Floating Beams

Many press brake light safety curtain systems have a floating beam option, individual or multiple infrared beams may be broken by the part being formed. Some safety curtains allow up to eight inches of beams to be floated. Floating beams can be extremely dangerous if used improperly. Just consider a press with a three inch stroke and the light curtains safety allows you to float up to eight inches of beams. We do NOT recommend floating beams!

Channel Select or Canceling

Beam canceling is an option on some light curtains. Canceling beams allows you to blank out or ignore a given number of the beams. It is a very useful option if used properly and safely. For instance, if you have support arms mounted to the front of the press, canceling the beams that are obstructed by the support arms allows you to operate the press while still protecting the die opening. Misuse of this option is extremely dangerous and should be supervisor controlled. Blanking beans to allow the part being formed to be ignored by the light curtain should never be used. The gap in the light curtain array of beams would allow the operator to inadvertently penetrate the danger zone.

Programmable Channel Select

Some safety curtains can be programmed to selectively cancel a given number of beams during the forming operation. For instance, a box shape is being formed. On the first stroke the safety curtains are programmed to ignore only one beam. A four inch high ninety degree bend is made. The part is rotated ninety degrees. Now the side of the part is obstructing four inches of the light curtain. For the remaining strokes the light curtains safety must be programmed to ignore four inches of the light curtain. Four inches of canceled beams is extremely dangerous.

OSHA and ANSI Requirements for Use of Press Brake Light Safety Curtain


The machine must be able to stop the movement of the ram anywhere in the stroke.

The stopping time of the ram must be known.

The stopping time of the ram must be monitored for deviation in stopping time on each stroke.

The minimum distance the safety curtain system can be located to the pinch point must be known.

The light curtains safety system must be control reliable.

The machine stop circuit with which the light curtains safety system are interfaced, must be control reliable.

The light curtains safety system must be self checking for proper operation on each stroke.

There should be no easy way to disable the safety system without special tools.

If the safety curtains system is disabled there should be a clear indication that it is disabled.

The operator and setup person should be properly trained in the operation of the safety curtains system.

press brake light safety curtain, Press Brake Light Safety Curtain Systems

1. Using a support table, insert the flat blank into the die and up against the back gage.

2. Bring the ram down until it stops automatically at the first mute point

3. The operator releases the pedal, then re-initiates the stroke of the ram to form the part.

press brake light safety curtain, Press Brake Light Safety Curtain Systems

4. Slide the part up against the back gage for the second bend.

5. Bring the ram down until it stops automatically at the second mute point.

6. The operator releases the pedal, then re-initiates the stroke of the ram to form the second bend.

press brake light safety curtain, Press Brake Light Safety Curtain Systems

7. Slide the part out past the light curtain and rotate the part 90 degrees.

8. Bring the ram down to the third mute point, then insert the part up against the back gage.

9. The operator releases the pedal, then re-initiates the stroke of the ram to form the short leg of the second side of the part.

press brake light safety curtain, Press Brake Light Safety Curtain Systems

10. Slide the part out past the light curtains and bring the ram down to the third mute point.

11. Insert the part through the die opening and up against the back gage.

12. Operator releases pedal, the re-initiates ram stroke to form second high side of part. Repeat sequences until box has been completed.

press brake light safety curtain, Press Brake Light Safety Curtain Systems

S200LB – $500
Press Brake Light Safety Curtain Brackets
(set of 2 brackets)

press brake light safety curtain, Press Brake Light Safety Curtain Systems

S200SGI – $175
Polycarbonate Side Guards
(set of two side guards)

MiniSafe MS4300C Series Safety Press Brake Light Safety Curtain


System Pricing

System Prices includes transmitter, receiver, 15′ (3.6m) transmitter cable, 5′ (1.5m) receiver cable; and Universal controller w/ Floating Blanking, Channel Select, MPCE, MTS, Normal/Guard Mode, Visible Status/Diagnostic Indicators housed in metal enclosure.

Coverage HeightStandard System Model # (110VAC Operation)System Price
4 inch (101 mm)MS4304C-AC1-15X-05R$1,030.00
8 inch (203 mm)MS4308C-AC1-15X-05R$1,288.00
12 inch (305 mm)MS4312C-AC1-15X-05R$1,551.00
16 inch (406 mm)MS4316C-AC1-15X-05R$1,793.00
20 inch (508 mm)MS4320C-AC1-15X-05R$2,035.00
24 inch (610 mm)MS4324C-AC1-15X-05R$2,277.00
28 inch (711 mm)MS4328C-AC1-15X-05R$2,519.00
32 inch (812 mm)MS4332C-AC1-15X-05R$2,761.00
36 inch (914 mm)MS4336C-AC1-15X-05R$3,003.00
40 inch (1017 mm)MS4340C-AC1-15X-05R$3,313.00
44 inch (1117 mm)MS4344C-AC1-15X-05R$3,624.00
48 inch (1219 mm)MS4348C-AC1-15X-05R$3,933.00
52 inch (1320 mm)MS4352C-AC1-15X-05R$4,449.00
56 inch (1422 mm)MS4356C-AC1-15X-05R$4,811.00
60 inch (1524 mm)MS4360C-AC1-15X-05R$5,173.00
64 inch (1625 mm)MS4364C-AC1-15X-05R$5,485.00

MiniSafe MS4400C Series Safety Press Brake Light Curtain


System Pricing

System Prices includes transmitter, receiver, 15′ (3.6m) transmitter cable, 5′ (1.5m) receiver cable; and Universal controller w/ Floating Blanking, Channel Select, MPCE, MTS, Normal/Guard Mode, Visible Status/Diagnostic Indicators housed in metal enclosure.

Coverage HeightStandard System Model # (110VAC Operation)System Price
4 inch (101 mm)MS4404C-AC1-15X-05R$1,413.00
8 inch (203 mm)MS4408C-AC1-15X-05R$1,695.00
12 inch (305 mm)MS4412C-AC1-15X-05R$1,837.00
16 inch (406 mm)MS4416C-AC1-15X-05R$2,071.00
20 inch (508 mm)MS4420C-AC1-15X-05R$2,304.00
24 inch (610 mm)MS4424C-AC1-15X-05R$2,536.00
28 inch (711 mm)MS4428C-AC1-15X-05R$2,791.00
32 inch (812 mm)MS4432C-AC1-15X-05R$3,003.00
36 inch (914 mm)MS4436C-AC1-15X-05R$3,281.00
40 inch (1017 mm)MS4440C-AC1-15X-05R$3,538.00
44 inch (1117 mm)MS4444C-AC1-15X-05R$3,838.00
48 inch (1219 mm)MS4448C-AC1-15X-05R$4,140.00
52 inch (1320 mm)MS4452C-AC1-15X-05R$4,648.00
56 inch (1422 mm)MS4456C-AC1-15X-05R$4,999.00
60 inch (1524 mm)MS4460C-AC1-15X-05R$5,352.00
64 inch (1625 mm)MS4464C-AC1-15X-05R$5,656.00
Option Costs
Longer cables at time of order (5 ft. increments) - add $3.00/foot
Reset Switch Installed on Controller Enclosure Cover - $50.00
For DIN Rail Mount Controller (24 VDC only) includes 30' transmitter & receiver cables
- subtract $50.00

Mechanical Press Brake Light Curtain Control


press brake light safety curtain, Press Brake Light Safety Curtain Systems

Press brake light curtain control
#S200MC – $5750

Installation – Instruction Manual

System IIe Standard Features


Time-Based Brake Monitor (monitor stops anywherein the stroke)

Stop Time Displayed in Milliseconds

Lost Motion Detection

Plain English Diagnostics

Safe Light Curtain Distance Automatically Calculated

Multi-Mute; 15 Programmable ‘MUTE’ Points

400 Programmable ‘TOOL’ Setups

Programmable Ram Stops (Top, MUTE Position or Both)

Adjustable TOP STOP Angle

Compensation for Ram ‘DRIFT’

Indicator Lights Clearly Display Mode – Safe, Mute and Fault

Automatic Light Curtain Relay Check

All Functions are Menu Driven

Press Brake Light Curtain Control – System IIe Description


The System IIe is a control that acts as an interface between light curtains that are designed to guard personnel working around moving machinery. Whenever the press brake operator’s safety is dependent on the machine’s ability to stop quickly enough to prevent an injury, it is imperative that the safe stopping time of the machine shall be known and the light curtains be set at the proper distance from the nearest pinch point as is regulated in the United States by the Occupational Safety and Health Administration (OSHA). The System IIe is totally dependent on the proper operation of the light curtains used to safeguard the operator. Be certain that the light curtains used meet all OSHA requirements before interfacing them to the System IIe. Be certain that the light curtains are mounted the proper distance from the nearest pinch point as prescribed by the light curtain manufacturer. Regardless of the calculated distance, you should never mount the light curtains closer than 7.5 inches (191 mm) from the nearest pinch point. This is required by OSHA Table 0-10 in OSHA 1910-217 and Table 1 in ANSI B11-19-1990.

The System IIe provides the stopping time of the machine in milliseconds when the machine is emergency stopped in any position. The OSHA and ANSI B11 formula for safe stopping time should be used to determine the safe operating distance the light curtains are from the nearest pinch point. You should refer to the light curtain manufacturer’s manual for the formula to be used to determine the proper distance.

The System IIe can and should be used to monitor the press brake light curtain control stopping time. Proper setting of the stop time setpoint in the System IIe is the sole responsibility of the employer, purchaser and final owner of the equipment.

If the machine is incapable of stopping in enough time to satisfy the OSHA time/distance formula, the machine is unsafe, and the ram arrest valve system should be repaired or replaced. This requirement is the sole responsibility of the employer and or machine owner.

The proper application, installation, maintenance and operation of the System IIe, the light curtains used and the machine itself is the responsibility of the purchaser and or employer.

It is the purchaser’s and or employer’s responsibility to inspect the System IIe, the light curtains, and any other pertinent equipment daily for proper operation. It is also the purchaser’s and or employer’s responsibility to know that the stop time monitoring setpoints and the mute setpoints are proper and safe for the operator.

The purchaser and or employer is also responsible for the selection and training of the personnel necessary to properly install, operate and maintain the machine and its safeguarding systems. For example, the System IIe should only be installed, checked out and maintained by a qualified person, as “a person or persons who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowledge, training and experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work.” (ANSI B30.2-1983)

The user is the person(s) identified and designated by the employer as being appropriately trained and qualified to perform a specific procedure. Often the user is the installer, die setter, electrician, maintenance personnel, supervisor, foreman, etc. who is involved with the setup, daily test and checkout of the machine and the safety devices.

The System IIe should never be accessed by anyone other than properly trained personnel so designated by the purchaser and or employer. If the machine operator is not properly trained to setup up the machine or the System IIe then a setup person so designated should perform the setup.

The machine operator must receive specific proper training on exactly which machinery is protected by the light curtains, the machine’s operating controls, warning signs and press brake safety instructions. The machine operator must thoroughly understand and follow the company’s press brake safety rules and always use the safeguards and proper hand tools provided by the employer. The machine operator must notify management if the machine, tooling or safety devices are not operating properly. Never use the machine if it or the safety equipment is not in proper working order.

The System IIe is provided with a keyed selector switch. The purpose is to prevent untrained and unauthorized personnel from entering or modifying programs or from changing setpoints programmed for brake stop time monitoring, stroke length and top and bottom position setpoints. It is the purchaser’s and or employer’s responsibility to ensure that only trained and authorized personnel have access to these functions.

The following are additional requirements the purchaser and or employer must meet before using the System IIe. The machine on which the System IIe and light curtains are to be installed MUST can stop motion anywhere in the stroke or cycle in a safe time as prescribed by the OSHA formula for safe stopping times.

Do not use the System IIe or light curtains on any device with inconsistent stopping time or inadequate control devices or mechanisms.

When the System IIe and light curtains are used to protect a machine operator from a hazard, the purchaser and or employer has the responsibility to ensure that all applicable federal, state and local Occupational Safety and Health Act (OSHA Standards) requirements and any such rules, codes and regulations which may apply are satisfied.

All Safety related machine control circuit elements, including pneumatic, electric or hydraulic controls must be control reliable. Any power press which uses the System IIe and light curtains must meet the requirements and inspection procedures of OSHA regulation 1910.217, ANSI standards B11.1-1988 and B11-19-1990 plus any other applicable state and local regulations.

Press Brake Light Curtain Control Safety Packages & Options


press brake light safety curtain, Press Brake Light Safety Curtain Systems
S200MC – $5750
Press Brake Light Curtain Control Package
 
Kit includes System IIe Control, transducer and cable, rod cylinder, top of stroke limit switch, treadle position limit switch, 1/2″ dual air valve and pendant mounting arm.
 
press brake light safety curtain, Press Brake Light Safety Curtain Systems

S200MCF – $5915
Press Brake Light Curtain Control Treadle /Foot Switch Package

Kit includes System IIe Control, transducer and cable, rod cylinder, top of stroke limit switch, foot switch, 1/2″ dual air valve and pendant mounting arm.

Instruction – Installation Manual

press brake light safety curtain, Press Brake Light Safety Curtain Systems

S200AC – $4950
Single Speed Air Press Brake Light Curtain Control System

Kit includes System IIe Control, transducer and cable and pendant mounting arm.

Instruction – Installation Manual

press brake light safety curtain, Press Brake Light Safety Curtain Systems

S200AC2 – $5185
High/Low Speed Air mechanical press brake System

Kit includes System IIe Control, transducer and cable and pendant mounting arm.

Instruction – Installation Manual

Other Options

SPA15NJCCE – $365
Transducer 15″ (Linear)SPA20NJCCE – $395
Transducer 20″ (Linear)S200LS – $98
Limit Switch

S203PC – $180
Air Cylinder 3″ with hardwareSTD15 – $125
Transducer Cable (Linear)


Contact Us


If you are interested in learning more about the press brake light safety curtain do not hesitate to visit our contact page or give us a call at 800-516-5516

About Metal Tech Controls Corp.



Metal Tech Controls Corp. has been a professional, innovative, and trustworthy source since 1989 for press brake safety controls and systems, including the cutting-edge Laser Sentry system. Our products and services, just like our Florida-based business, are all proudly Made in America.

Contact Metal Tech Controls Corp.


Metal Tech Controls Corp.
6035-101 Taylor Road
Punta Gorda, FL 33950

Toll Free: 800-516-5516
Local: 941-575-7677
Fax: 941-575-9038

Email: info@metaltechcontrols.com

Copyright © 2019 Metal Tech Controls Corp. All rights reserved.
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