Upgrading Your OMTech Polar: Installing an Emergency Stop Switch

OMTech Laser Updated On Nov 05, 2024

As laser engraving technology advances, so does the need for enhanced safety features. The OMTech Polar 350 is already a powerhouse in the world of desktop laser engravers, but today we're going to take it up a notch by replacing the standard key control with an emergency stop switch. Let's dive into this tech-savvy modification that will streamline your workflow and boost your machine's safety profile.

Why The Upgrade Matters

This modification isn't just about convenience – it's about enhancing your laser engraving experience. The emergency stop switch provides:

Faster power control: No more fumbling with keys in critical moments.
Enhanced safety: Quick shutdown capability in case of emergencies.
Simplified operation: One push or pull, and you're in control.
No more lost keys: Say goodbye to the frustration of misplaced keys.

Steps to Installing an Emergency Stop Switch on OMTech Polar

What You'll Need:

OMTech Polar laser engraver
Emergency stop switch (included in the accessory kit)
Screwdriver
Patience and a steady hand

Step 1: Locate Your Emergency Stop Switch

When you first receive your OMTech Polar 350, you'll find an accessory kit or toolbox included. Inside this kit, you'll discover the emergency stop switch that we'll be using for this upgrade. It's slightly larger than the key control, but don't worry—it's designed to fit perfectly in place of the existing switch.

Step 2: Prepare for Removal

Before we start, ensure your machine is unplugged for safety. Now, let's focus on the key control area. You'll need to remove two screws: one on the front and one on the rear of the control panel.

Additionally, there are two wiring connectors that need to be disconnected:

The LED strip connector, easily accessible from the top.
A vertical connector underneath, located directly under the Start button.

Step 3: Disconnecting and Removing

Gently pull out the LED connector. Then, reach underneath to disconnect the vertical connector from the switchboard. With these unplugged, you're ready to remove the control panel.

Tip: There'll be one cable at the front that’s still connected. Don't worry about pulling it out—we'll work around it.

Step 4: Lifting the Control Panel

Here's where finesse comes into play. Grab the front edge of the control panel and lift it up on its side. Then, pivot it carefully and place it down, giving you access to the back of the key control without disconnecting any connected cables.

Step 5: Accessing the Key Control

On the backside of the control panel, you'll see the key control unit. The cables are surrounded by heat shrink on the wiring connectors. Carefully pull off this wrap, being cautious not to damage the wires underneath.

Step 6: Removing the Key Control

Once the heat shrink is off, you'll see the wiring connectors. Take note of their positions – you'll need this information for the new switch. Undo the collar of the key control, and it should pull right out.

Step 7: Preparing the Emergency Stop Switch

Take your new emergency stop switch and remove its collar and retaining ring. You'll notice it has three prongs:

Top: NC (Normally Closed)
Middle: NO (Normally Open)
Bottom: C (Common)

Step 8: Installing the New Switch

Feed the emergency stop switch through the hole from the front side of the control panel. Reattach the retaining ring and collar from the back. Don't tighten it fully yet—leave some wiggle room for adjustments.

Step 9: Wiring the New Switch

Move the green wire to the NC (Normally Closed) prong.
Keep the red wire on the C (Common) prong.
The NO (Normally Open) prong will remain unused.

Pinch these connections with pliers to ensure they're secure. If you still have the heat shrink, slide it back over the connections for added protection.

Step 10: Reinstalling the Control Panel

Now comes the reverse of step 4. Start by placing the back end of the control panel first, then lower the front end. Ensure it clicks securely into place.

Step 11: Reconnecting the Wires

Remember those two connectors we disconnected earlier? It's time to plug them back in:

Reconnect the LED connector (you might need to pull the gantry forward to reach it).
Reattach the vertical connector to the switchboard.

Step 12: Securing and Testing

Replace the two screws you removed in step 2. Now, it's time for the moment of truth! Ensure the switch at the rear of the machine is turned on, and the unit is plugged in. Pull out the emergency stop switch, and your laser should power on. Push it in, and the power should turn off. Voila! You've successfully upgraded your OMTech Polar 350 with an emergency stop button.

Conclusion

Ready to take your laser engraving game to the next level? The OMTech Polar 350 is just the beginning. Whether you're a hobbyist looking to explore new creative horizons or a professional seeking to streamline your production process, OMTech laser engravers offer the perfect blend of power, precision, and innovation.

Visit OMTech's website now to explore our full array of laser engravers, including the versatile Polar 350. Join the community of makers and creators who are pushing the boundaries of what's possible with laser technology. Your next masterpiece is just a laser beam away!