Profibus-DP I/O module BECKHOFF BK 3120

Profibus-DP 255 coupler I/O module with K-Bus extension Manufacturer: Beckhoff Type / Manufacturer number: BK3120 Product type: PROFIBUS bus coupler Technical specifications: Number of bus terminals: 64 (255 with K-bus extension) Maximum number of fieldbus bytes: 128 bytes input and 128 bytes output Transfer rates: Auto-sensing up to a maximum of 12 MBaud Bus interface: 1 x 9-pin D-Sub connector with shielding Power supply: 24 V DC (-15 %/+20 %) Input current: 70 mA + (total K-bus current) / 4500 mA max. K-bus power supply: 1750 mA Power contacts Max.: 24 V DC / max. 10 A Electrical isolation: 500 V (power contact/supply voltage/field bus) Weight: 170 g Operating/storage temperature: -25…+60 °C / -40…+85 °C