Technology has become a major part of the lift world. And not just to make lifts go up and down more smoothly. Today, many of the systems they incorporate are invisible, but they make a huge difference. One of these is the Digital Lift Load Scale, which is no longer a rarity in high-end models, but something that, by law, is becoming practically mandatory in many facilities.
And the interesting thing is that it's not just limited to weight. Its usefulness goes far beyond that. It's a key component for the entire system to function more safely, more comfortably... and without any problems.
What exactly does a Digital Load Scale do in a lift?
Simply put, it detects the weight inside the car and tells the lift how to behave. Is it too full? Too light? Overweight? The system records everything instantly and adjusts its behavior. It can prevent it from starting, skip unnecessary stops, or even detect if it's being misused.
The technical basis is highly precise load cells that detect small deformations in the metal. These deformations, however small, are translated into electrical signals that the lift then interprets thanks to its electronics. All this happens in seconds, without you noticing, but it ensures that the lift's path is correct.
Different types of Digital Load Scale installation in Lifts
The choice here depends largely on the lift's construction and whether it's a new build or a modernization. There are three main systems:
Under the cabin
This is the most precise and stable over time. It's mounted on the frame that supports the cabin, so it goes directly to the point where the weight is actually transferred. It's perfect if you're going to perform extensive work, whether in a new installation or a major renovation.
In traction cables
Very common when you don't want to dismantle half the installation. Here, the sensors surround the cables that raise and lower the cabin and record voltage changes. Calibrate, adjust, and that's it. It's quick to install and very practical for buildings in use.
In hydraulic systems
In these cases, oil pressure is measured. Since pressure is directly related to the weight supported by the piston, it allows us to determine how much load the cabin is carrying. Installation is simple and works well, as long as it is properly calibrated.
And what functions does it have beyond weighing?
Many, and some are key to avoiding problems:
Avoid overloads
If the weight is greater than permitted, the lift will not move. It also provides a warning, both with a visual and audible signal. This prevents risks to both users and the mechanism itself.
Bypass when full
When it detects that the car is already full, the system ignores new floor calls. Why stop if no one else can get in? This saves time and makes the route more efficient.
Automatic adjustments at start and stop
Depending on the weight it's carrying, the lift regulates how it starts and stops. This means less vibration, more precise leveling, and a much more comfortable ride. And without the typical "jump" upon arrival.
Avoid misuse
Some more advanced models are able to detect when the lift is being used in an unusual way, such as when someone pushes something very heavy inside without anyone else inside. In this case, they can cancel certain commands or calls to prevent misuse.
Clear advantages of having this system installed
Beyond the legal issue, which is reason enough in itself, the Digital Lift Load Scale brings real improvements:
– More safety: prevents accidents and protects the mechanism
– Better performance: routes are optimized, especially if there are many people entering and exiting
– More comfortable journeys: no jerks, no steps, no long waits
– Prevention: If you detect imbalances or unusual patterns, you can act before failures occur.
– Compliance with regulations: in Spain, if you don't have it, you have to install it.
What the law says in Spain
The ITC AEM 1 is clear: if a lift does not have a load control system, one must be installed. This regulation is in line with the European standard UNE-EN 81-20. And this is not a suggestion: if an inspection reveals that the system is missing, the owner has a maximum of one year to rectify the situation.
That's why many communities are taking advantage of it modernize your elevators quickly, especially using sensors placed on the cables.
How do you calibrate it? Do you have to do it regularly?
Calibration is essential. If it's not properly adjusted, the system can give incorrect readings and cause problems where none exist... or overlook more serious ones.
Nowadays, many modern models come with automatic calibration. But in general, the basic process consists of:
– Leave the cabin empty and record that point as a reference
– Load a known weight for the system to adjust
– Check that it correctly detects when it is full and when there is an overload
In cable-mounted systems, this adjustment is made fairly quickly. This is one of the advantages when you want to do everything without major interventions.
Things to keep in mind before installing one
Although the system is very reliable, it is not infallible. In places where large but light objects are transported (such as hospitals), the system may not be able to accurately detect whether the cabin is "full." In these cases, another type of complementary sensor may be necessary.
You also need to carefully consider the type of sensor that best suits your space, the type of lift, and what you really expect from the system. It's not about installing the most expensive one, but the most appropriate one.
Which one should you choose? Well, it depends on the building and what you're looking for.
A busy office block isn't the same as a quieter residential building. In the former, it's important that the system be fast, accurate, and able to skip stops if it's already full. In the latter, the priority is usually to ensure it's safe, legal, and doesn't cause problems during installation.
Therefore, before choosing, it is advisable to discuss it with a company that is knowledgeable about the subject and can recommend the most sensible option for each situation.
At Eleva Balear we help you with lift modernization in Mallorca.
We've been dedicated to this for years. Whether installing a lift from scratch, modernizing an old one, or handling maintenance, at Eleva Balear we know the ropes. And we also know the regulations, which is no small feat.
If your building needs updating, or if you simply want to improve security and comfort, we can offer solutions with Digital Lift Weighing Systems designed for your needs. No two buildings are the same, nor are two projects identical.
We work with modern and reliable equipment, and we ensure that everything is installed correctly, without unnecessary complications or delays.
If you are interested in the modernization of lifts in Mallorca, write to us or call us. We'll be happy to help you.
