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Beckhoff BK3120 PROFIBUS Economy Plus Bus Coupler, DP V1, 12 Mbaud, 128 In/128 Out, 24V DC, 51×100×69 mm
Regular price
$225.00 USD
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$225.00 USD
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Overview
The Beckhoff BK3120 PROFIBUS Economy Plus Bus Coupler connects EtherCAT/Bus Terminals to PROFIBUS DP networks and supports DP‑V1 services for parameterization and diagnostics of complex terminals. It automatically detects PROFIBUS baud rates up to 12 Mbaud and can handle up to 128 bytes of input and 128 bytes of output process data. With K‑bus extension technology, up to 255 spatially distributed Bus Terminals can be connected to a single coupler.
Key Features
- PROFIBUS DP‑V1 with direct register access for parameterization/limit setting
- Automatic baud rate detection up to 12 Mbaud
- Process image up to 128 bytes input and 128 bytes output
- K‑bus extension for up to 255 terminals (64 local)
- 24 V DC supply; K‑bus current 1,750 mA
- 500 V electrical isolation (power contacts/supply/fieldbus)
- Compact DIN‑rail housing, 51 × 100 × 69 mm
Applications
- Integrating Beckhoff Bus Terminals into PROFIBUS DP control systems
- Machine and process automation requiring large process images and DP‑V1 diagnostics
Specifications
| Brand | Beckhoff |
| Model | BK3120 (PROFIBUS Economy Plus Bus Coupler) |
| Fieldbus Interface | PROFIBUS DP, DP‑V1; 1 × D‑sub 9‑pin socket (shielded) |
| Data Rates | Automatic detection up to 12 Mbaud |
| Process Image | 128 bytes input and 128 bytes output |
| Bus Terminals Supported | 64 (local); up to 255 with K‑bus extension |
| Power Supply | 24 V DC (−15%/+20%); input current 70 mA + (Σ K‑bus/4), max 500 mA |
| K‑bus Current Supply | 1,750 mA |
| Power Contacts | Max. 24 V DC / 10 A |
| Electrical Isolation | 500 V (power contact / supply / fieldbus) |
| Dimensions (W × H × D) | 51 × 100 × 69 mm |
| Approvals | CE, CCC, UL, ATEX, IECEx, DNV, cFMus |
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