Duro Dyne PLSU3 Theory Of Operation

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Safety Operation:

Dump Valve and E-stops/Guard-interlocks

The new PLSU3 is equipped with modern safety features that includes two emergency

stop buttons (E-stops), a safety relay, a single solenoid air dump valve and cover/guard

interlock switches. The safety dump valve is connected directly to the main air regulator.

The safety relay is connected to the PLC [2] input and connected in series with the two

red E-stop buttons [3] (located on top of each side of the machine) and the front and

back guard-interlock switches [4].

to release its air pressure, locking out the cutting blade and internally locking out the

motor. If the machine loses electrical power, the dump valve will automatically dump all

the air from the system.

There are FIVE (5) ways to dump all air from the system and ensure cutting blade safety

when working on/operating the machine:

1) Pressing/pushing down either of the two

operation.

2) Lifting up the front safety shield (steel/clear Lexan shield protecting the two rollers),

which in turn, breaks the interlock switch.

3) Removing the rear clear Lexan safety guard, which would have to be removed by

extracting the screws with a Phillips head screwdriver and would in turn, break the

interlock switch.

4) Pulling back the quick release shutoff valve connected directly to the air regulator

underneath the machine.

5) Completely removing the air hose from the air regulator underneath the machine.

Cutting-Blade Safety

It is very important to be aware that when air pressure is loaded back into the system,

pressure will be engaged right back into the air cylinder that drives the cutting blade. This

will resume the cutting motion if the blade had not completed its path prior to the

machine's loss of air pressure. For example, if air pressure is lost while the blade has

completed half of its cutting path, it will complete the other half of its cutting path upon

loading air pressure back into the system. No body parts should be in the vicinity of this

moving blade at any time.

Motor-Drive Roller Safety

The motor driver roller is covered by the steel and clear Lexan composed front safety

shield; if the operator lifts this cover up the air will dump, and the motor will stop. If the

material has not reached the material eye sensor and the guard is lifted, the material will

stop feeding through. To resume feeding, the cover needs to be set back down and the

cut program will need to be resumed. The material will always retain its set distance.

Internally, the material drive roller will never be in motion while the cutting blade is in

motion to prevent any collisions between the material and the cutting blade.

PLSU3 Theory of Operation

Breaking any of these switches causes the dump valve

red

E-stop buttons at any time during

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Summary of Contents for Duro Dyne PLSU3

Page 1 Safety Operation: Dump Valve and E-stops/Guard-interlocks The new PLSU3 is equipped with modern safety features that includes two emergency stop buttons (E-stops), a safety relay, a single solenoid air dump valve and cover/guard interlock switches. The safety dump valve is connected directly to the main air regulator.
Page 2 Additionally, if no material is placed over the encoder and start is pressed, then the motor INFINITELY will run until the stop button is pressed on the HMI’s main screen. HMI-Lock out screen If either E-stop buttons or the interlock guard switch is broken, the HMI [5] screen will default to a red lock-out screen as shown below in Pic.1.
Page 3 Pic 2.1 HMI Power Cord Plug Pic 2.2 HMI Network Cord Plug Main Screen When the 110V line cord is plugged in and one of the two main power push button switches is pushed on, the touch-screen HMI will power up. While the HMI is powering up DO NOT touch and hold the screen or else it will go into screen calibration mode.
Page 4 Stop: Brings the motor to a complete halt at any time during the cutting program. Also will stop the cross-cut blade completely if pressed during the cross-cut blade’s path. Eye Blocked/Cleared indicator: Shows the status of the eye sensor. “Eye blocked” means there is material The machine will covering the eye sensor, and “Eye cleared”...
Page 5 PLSU3: Getting Started 1) Power up your PLSU3 machine by plugging the 110VAC line cord into a 110VAC power source. 2) To turn the machine on, ensure that BOTH green power buttons are depressed on either side of the machine. The machine will not turn on unless BOTH BUTTONS are pushed down.
Page 6 OFFSET GUIDE Please use this guide to adjust overall cut length accuracy on the PLSU3 machine, ONLY if necessary. When you power up the machine, you will see the main screen (below): Press the “manual screen” button in the bottom right corner:...
Page 7 This will bring you to the manual screen, pictured below. From there, press the yellow “Offset” button in the bottom left corner:...
Page 8 You will now be directed to the offset screen, as pictured below. Press the white box with the blue outline and type in your desired offset value (for example, if your pieces are 1/8” short, you will type “0.125” into the box and press enter.