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Beckhoff BK3120
The Economy plus version extends the existing PROFIBUS Bus Coupler series BK3xx0. The K-bus extension technology allows the connection of up to 255 spatially distributed Bus Terminals to one Bus Coupl…
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Description
The Economy plus version extends the existing PROFIBUS Bus Coupler series BK3xx0. The K-bus extension technology allows the connection of up to 255 spatially distributed Bus Terminals to one Bus Coupler. The BK3120 has been designed to accommodate
Specification
| Number Of Bus Terminals | 64 (255 with K-bus extension) |
|---|---|
| Max. Number Of Bytes Fieldbus | 128 byte input and 128 byte output |
| Data Transfer Rates | automatic detection up to 12 Mbaud |
| Bus Interface | 1 x D-sub 9-pin socket with shielding |
| Data Transfer Medium | shielded copper cable, 2 x 0.25 mm² |
| Power Supply | 24 V DC (-15%/+20%) |
| Input Current | 70 mA + (total K-bus current)/4, 500 mA max. |
| Current Supply K Bus | 1750 mA |
| Power Contacts | max. 24 V DC/max. 10 A |
| Electrical Isolation | 500 V (power contact/supply voltage/fieldbus) |
| Weight | approx. 170 g |
| Operating Temperature | -25…+60°C |
| Storage Temperature | -40…+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, DNV, cFMus |
| Ex Marking | ATEX: II 3G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc cFMus: Class I, Division 2, Groups A, B, C, D Class I, Zone 2, AEx 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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