Reliable monitoring
Of the brake function and wear with just one measurement system.
Individual planning
Of the wear-based maintenance intervals because the /DUE diagnostic unit continuously determines the brake's working air gap.
Just one purchase
Because the measurement system itself works contactlessly and without wear.
SEW‑EURODRIVE's /DUE diagnostic unit option for the BE1 to BE122 brakes that have been tried and tested millions of times, as well as the new BF11 to BF 30 double brakes, takes on two tasks with just one measurement system: monitoring the function of the brake and determining the wear on the brake lining. It performs both tasks by continuously monitoring the working air gap of the brake. This way, you can also plan individual, wear-based maintenance intervals for your brake system. In practice, this means: You always have the function and wear of the brake under control.
The sensor is fully integrated into the brake and the evaluation electronics are protected in the terminal boxes. As a result, you can easily use the /DUE diagnostic unit option even under difficult ambient conditions up to IP66.
As standard, it also has one digital output signal each for the function of the brake and wear on the brake lining, as well as an analogue current signal that corresponds to the size of the working air gap.
The measurement system works contactlessly based on the eddy current principle; high-frequency alternating current flows through the sensors. The electromagnetic field induces eddy currents in the pressure plate, which change the sensor's AC resistance. The evaluation unit converts this change in impedance to an electrical signal (4 – 20 mA) that is proportional to the brake's working air gap.
The brake function is monitored using digital signals (NO contacts), and digital outputs (NC contacts) are used to indicate that the wear limits have been reached. Current outputs also allow continuous monitoring of brake wear.
In addition to the outputs, LEDs on the evaluation unit also indicate the function and wear of every partial brake.
The following tables list the technical data of the diagnostic units for installation in the motor wiring space and the sensors installed in the coil body.
Evaluation unit | DUE-1K-00 For BE.. brakes | DUE-2K-00 For BF.. brakes | ||
Signal outputs (2 channels) | BE.. brake Out1: 4 – 20 mA FCT1: DC 24 V (150 mA) WEAR1: DC 24 V (150 mA) | Partial brake 1 for BF.. brakes Out1: 4 – 20 mA FCT1: DC 24 V (150 mA) WEAR1: DC 24 V (150 mA) Partial brake 2 for BF.. brakes Out2: 4 – 20 mA FCT2: DC 24 V (150 mA) WEAR2: DC 24 V (150 mA) | ||
Current consumption | Max. | mA | 190 | 360 |
Min. | mA | 40 | 80 | |
Supply voltage | DC 24 V (± 15%) | |||
Electromagnetic compatibility | DIN EN 61800‑3 | |||
Operating temperature range for the evaluation unit | -40 to +105 °C | |||
Humidity | ≤ 90% relative humidity | |||
Degree of protection | IP20 (max. IP66 in closed terminal box) |
Sensors | DUE-d6-00 | DUE-d8-00 |
Degree of protection | IP66 | IP66 |
Operating temperature range of sensor and cable | -50 to +150 °C | -50 to +150 °C |
The /DUE diagnostic unit is available with the proven type DR.. motors, as well as DR.. motors with the new double brake. These combinations are currently implemented.
Motor type DRN.. | BE.. brake type |
80MK, 80M, 90S, 90L, 100L, 100LS, 112M, 132S, 132M, 132L | BE1, BE2, BE5, BE11 |
132M, 132L, 160M, 160L, 180M, 180L | BE20 |
160M, 160L, 180M, 180L, 200L, 225S, 225M, | BE30, BE32 |
200L, 225S, 225M, 250M, 250ME, 280S, 280M, | BE60, BE62 |
250M, 250ME, 280S, 280M, 315S, 315M, 315ME, 315L, 315H | BE120, BE122 |