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Beckhoff BK7520
The BK7520 Bus Coupler connects the SERCOS bus system with the electronic terminal blocks, which can be extended in modular fashion. One unit consists of one Bus Coupler, any number from 1 to 64 termi…
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Description
The BK7520 Bus Coupler connects the SERCOS bus system with the electronic terminal blocks, which can be extended in modular fashion. One unit consists of one Bus Coupler, any number from 1 to 64 terminals and one end terminal. The BK7520 allows, with the
Specification
| Number Of Bus Terminals | 64 (255 with K-bus extension) |
|---|---|
| Max. Number Of Bytes Fieldbus | 254 word I/O for the cyclic interface (depending on the master) |
| Digital Peripheral Signals | 1,020 inputs/outputs |
| Analog Peripheral Signals | 254 inputs/outputs |
| Configuration | via KS2000 |
| Data Transfer Rates | 2/4/8/16 Mbaud, adjustable by means of configuration switch |
| Bus Interface | FSMA standard, IEC 872-2 |
| Data Transfer Medium | 1,000 µm plastic fiber optic |
| Power Supply | 24 V DC (-15%/+20%) |
| Input Current | 70 mA + (total K-bus current)/4, 500 mA max. |
| Starting Current | 2.5 x continuous current |
| Recommended Fuse | ≤ 10 A |
| Current Supply K Bus | 1750 mA |
| Power Contacts | max. 24 V DC/max. 10 A |
| Electrical Isolation | 500 V (power contact/supply voltage/fieldbus) |
| Distance Between Stations | 40 m plastic fiber optic |
| Weight | approx. 170 g |
| Operating Temperature | 0…55°C |
| Storage Temperature | -25…+85°C |
| Relative Humidity | 95%, no condensation |
| Vibration/Shock Resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| Emc Immunity/Emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. Rating/Installation Pos. | IP20/variable |
| Approvals/Markings | CE, CCC, UL, ATEX, IECEx |
| Ex Marking | ATEX: II 3 G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc |
| Design Form | compact terminal housing with signal LEDs |
| Material | polycarbonate |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Side By Side Mounting By Means Of | double slot and key connection |
| Marking | labeling of the BZxxxx series |
| Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver |
| Connection Cross Section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² |
| Stripping Length | 8…9 mm |
| Current Load Power Contacts | Imax: 10 A |
| Dimensions (W X H X D) | 51 mm x 100 mm x 69 mm |
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