Scanreco G2 Radio Remote Control System Hmf Tech

Getting the Scanreco G2 Pairing to Actually Work

The Scanreco G2 radio remote control system from Hmf Tech is a solid piece of industrial wireless hardware. It works on 2.4 GHz with FHSS (frequency hopping spread spectrum) to dodge interference. The basic idea is straightforward: you pair a transmitter to a receiver, and the receiver sits between your existing control circuitry and the machine it runs. That's it. In practice, pairing is mostly painless if you follow the steps without getting distracted. Here's how the pairing process goes. Power down everything first. Apply power to the receiver only — don't touch the transmitter yet. On most G2 receiver boards, there's a small button or a pair of pins marked "pair" or "learn." Press and hold it for about three seconds until the status LED starts flashing slowly. Then power on the transmitter while still holding the button. The LED should settle into a steady blink or solid light once the link is established. Release the button. Test each direction of movement. If something doesn't respond, double-check that the motor phases are correct on that channel.

Scanreco G2 Radio Remote Control System Hmf Tech Wiring Notes

The receivers are generally low-voltage logic devices. Common configurations use 24 V DC or 12 V DC inputs, though some older units run on 120/240 V AC directly. Check the label on your specific board. The output channels are typically relay contacts rated somewhere around 5 to 10 amps depending on the model. I've seen people hook these straight into contactor coils without issue, but if you're driving a large industrial contactor directly, you're probably better off using the relay outputs to trigger a separatecontactor coil rather than attempting anything clever. Wiring order matters more than people realize. The transmitter has six or eight channel outputs depending on the model — usually labeled CH1 through CH8 or similar. Each channel on the transmitter maps 1:1 to a channel on the receiver. So CH1 on the stick controls the first function on the machine. Don't try to remap channels in software unless you have the actual programming cable and firmware tools. The stock firmware doesn't support arbitrary channel remapping on most G2 units.

Common Problems and What Actually Helps

I've dealt with a lot of G2 units in the field. The most common complaint is intermittent signal loss. Usually it's not the radio itself. It's grounding. These systems are sensitive to ground loops and noisy environments. I had a gate operator installation where the receiver kept dropping out whenever the main lighting contactor engaged. Turns out the gate motor panel and the control panel shared a bad ground point. We ran a dedicated ground strap from the receiver housing directly to the main earth bus and the problem disappeared. Simple fix that nobody thinks about. Another issue: range anxiety. The specs will tell you the system has a range of several hundred meters. That's true in a clean RF environment. In a steel mill or a busy warehouse full of VFDs and large motors, you're looking at significantly less. I'd budget on getting maybe 60 to 70 percent of the rated range in a real industrial setting with moderate interference. If you need maximum reliable range, the trick is antenna placement. Mount the receiver antenna externally with a short coax lead rather than relying on the internal antenna. A basic SMB connector and a four-dollar rubber duck antenna out there on the panel wall will make a noticeable difference. There's also the battery situation on the transmitter. The handheld units run on rechargeable Li-Ion packs. After about two years of daily use, capacity starts dropping noticeably. The indicator light on the transmitter gives you a heads up when voltage gets low, but it doesn't warn you until it's already struggling. I keep a spare battery pack charged at all times and swap them out before they die completely. Running a transmitter into deep discharge mode shortens the pack life considerably and can corrupt the battery management system calibration.

Advanced Configuration Options

If your G2 unit supports it, there are some jumper settings on the receiver board that change behavior. The most useful one is the toggle vs. momentary switch. By default, most channels operate in toggle mode — flip the stick one way and it stays there until you flip it back. Some applications need momentary return-to-center behavior instead. There's usually a jumper or a dip switch for this on the board. It's not always obvious which position does what, so check the silkscreen marking near the jumper area. Sometimes you need to look at the Hmf Tech documentation for your exact board revision to be sure. One thing the manual rarely emphasizes: the deadman switch on the transmitter is mandatory in most jurisdictions. Don't disable it. The system is designed so that if you release the deadman lever or thumb switch, all outputs cut within milliseconds. Bypassing that is dangerous and in many cases illegal under machinery safety regulations. If the deadman switch feels too sensitive or too stiff, there's usually a tension adjustment screw on the mechanism. Adjust it rather than cutting the wire. The system also has a fail-safe mode that's worth understanding. When the radio link is lost, the receiver defaults to cutting power to all outputs. This is by design. Some operators find this frustrating when they get out of range and have to walk back to restart the machine. The workaround is simple: program whatever function you need to resume on power-up into channel 1, then press the start button on the receiver board or cycle the main power. It's not elegant but it gets the machine moving again without a service call.

Where This System Falls Short

Let me be clear about the limitations. The G2 system is not a safety-rated controller. It doesn't meet SIL or PL requirements for safety-critical applications. If your machine needs category 3 or 4 safety circuits per ISO 13849, this radio system alone won't satisfy that. You need a separate safety relay or safety PLC on the control side. I've seen it done wrong more times than I care to count. The proprietary nature of the pairing process is another drawback. You can't mix and match transmitters and receivers from different manufacturers the way you could with older analog systems. Everything has to be a matching G2 set. If you lose the transmitter, you're ordering a new one and going through pairing again. There's no universal replacement option. And if the receiver board fails, you're replacing the whole board, not troubleshooting individual components. The boards are generally reliable but when they do go, they go. For heavy-duty continuous use in extremely harsh environments — think constant exposure to metal dust, grinding debris, or washdown with high-pressure chemicals — the plastic housings can degrade over time. The seals are decent but not perfect. I've had units where moisture got in through the antenna connector because the IP rating was compromised by a cracked rubber boot. Keeping spare connectors and dielectric grease on hand saves headaches.

What to Do Before You Buy

If you're considering this system, check a few things first. Make sure your machine's control voltage matches the receiver input rating. Verify you have enough channels for your application — it's annoying to find out you need a seventh channel after everything is installed. Confirm that your site doesn't have overwhelming 2.4 GHz interference from Wi-Fi networks, wireless cameras, or other radio equipment. If your facility runs multiple G2 systems close together, channel locking might be necessary to prevent cross-talk between units. The process involves setting a code on both the transmitter and receiver to match, which is covered in the technical manual. The Hmf Tech website and authorized distributors carry the current documentation. The pairing procedures and jumper configurations vary slightly between G2 receiver revisions, so always match your docs to your board number. The board numbers are printed directly on the PCB near the terminal blocks. Keep that number handy when ordering spares or asking for technical support.

Bottom Line

The Scanreco G2 Radio Remote Control System Hmf Tech is a no-nonsense industrial wireless control solution. It works well when installed correctly and maintained properly. It's not fancy. It doesn't have Bluetooth or app connectivity. It does the job it was designed for and it does it reliably. The pairing takes about five minutes. The wiring is straightforward. The main things that go wrong are grounding issues, antenna placement problems, and people trying to use it for applications it wasn't designed for. Avoid those pitfalls and the system will serve you for years.