Service

DUOmetric manufactures all products in Germany to guarantee a consistently high quality. In addition, the local production ensures flexible and fast response to your needs and to manufacture customized products with short delivery times.

For a detailed explanation of how light curtains and light grids work, click here.

Since the light grids are designed for industrial use, they are usually available for at least 10 years or the corresponding successor product is compatible backwards.

Of course, we offer a repair service. After internal analysis and consultation with the customer, the right solution for your product will be offered. Just get in touch with our support!

Yes, most DUOmetric products have CSA / UL approval. Our service team will be happy to help you with any questions about details.

The light grids are designed for the industrial sector, the housing material is suitably select for the corresponding areas of application and can also withstand higher strains. DUOmetric light grids are not only slim and light due to the aluminum profile, but also robust and practical.

In the standard version, the light curtains come with fixed connection cables of 4 m length. You can choose the cable length when ordering. For the maximum values, please refer to the technical documentation.

The profile length (L) results from the monitoring height (ÜH) plus the variable overhang (X, Y) at the strip ends. The profiles are designed in increments of a full 10 mm and can also be ordered longer. L = ÜH + X + Y

No, the connection of the LVE / LVX evaluators with ProfiNet extension module is currently not ring-capable.

The light grids have a relatively large coupling capacitance between the terminals and the housing. A galvanic connection of the light grids with the AS-i cable will probably violate its symmetry requirements. AS-i input modules with galvanically isolated
(e.g. opto-decoupled) inputs can normally be used as a connection.

The LT, LS and LA light grids are configured using a PC programming interface and the yellow wire. The yellow wire is also used to perform the self-adjustment and as a further switching output.

For diagnostics and configuration, an RS232 interface is used, which can be addressed with a standard terminal program. The interface parameters are in standard 115200 bps, 8N1, no handshake. Use a zero modem cable for connection to the PC.

Due to the generous aperture angles of our optics, alignment by eye should be sufficient and no alignment aids are needed. Depending on the system, you will receive feedback as to whether self-alignment is possible successfully (or needs to be aligned more precisely).

The self-calibration function adjusts the light grid to the installation situation. Based on the range, mounting tolerances and component variations, the optimum signal strength of each beam is determined and stored in a power-failure-proof manner. This enables accurate detection of signal attenuations and forms the basis for reliable detection of transparent objects.

To start the self-calibration of light grids with internal evaluator, the yellow wire must be connected to +24 VDC before the light grids is supplied with +24 VDC voltage. The light grids then continuously checks whether the received signals are within the permitted limits. If the test is positive, both LEDs on the receiver light up and the yellow wire can be disconnected from the +24 VDC. The light grid must continue to be supplied with voltage so that the reference values can be stored. In the event of a subsequent power failure, the values will be retained. When using NPN, the yellow wire is connected to GND for self-calibration.

To start the self calibration for light grids with external evaluators (LVX / LVE / LVR / LVB), DIP3=ON must be set in the evaluator and then a power-on must be performed. The system then continuously checks whether the received signals are within the permitted limits. If the test is positive, LED “D” lights up in the evaluator and now DIP3=OFF is set, which means that the reference values are stored in a power-failure-proof manner.

Yes. By adjusting the switching threshold relative to the reference values stored during self-calibration, the light grid can also detect transparent objects.

DUOmetric light grids evaluate beams sequentially and require a fixed time per beam for this. The cycle time is the time required to evaluate all the beams of a light grid and to process and output the results. The cycle time therefore increases as the number of beams increases.