System data	Lightbus | BK2020
Number of I/O stations	254
Number of I/O points	16,192
Data transfer medium	fibre optic conductor: APF (plastic) fibre (1,000 µm) or HCS fibre (200 µm)
Distance between stations	45 m for APF fibre, 300 m HCS fibre
Data transfer rates	2.5 Mbaud
Data transfer time	0.26 ms in the case of 10 modules for 32 bit inputs and outputs each (without K-bus run-time)

Technical data	BK2020
Number of Bus Terminals	64 (255 with K-bus extension)
Max. number of bytes fieldbus	512 byte input and 512 byte output
Digital peripheral signals	1,020 inputs/outputs
Analog peripheral signals	128 inputs/outputs
Configuration possibility	via KS2000 or the controller
Bus interface	2 x standard fibre optic connector Z1000 (plastic fibre), Z1010 (HCS fibre)
Power supply	24 V DC (-15 %/+20 %)
Input current	70 mA + (total K-bus current)/4, 500 mA max.
Starting current	approx. 2.5 x continuous current
Recommended fuse	≤ 10 A
Current supply K-bus	1750 mA
Power contacts	24 V DC max./10 A max.
Electrical isolation	500 V (power contact/supply voltage)
Distance between stations	45 m for APF fibre, 300 m HCS fibre
Weight	approx. 150 g
Operating/storage temperature	0…+55 °C/-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. class/installation pos.	IP 20/variable
Approvals	CE, UL, Ex

Accessories
KS2000	configuration software for extended parameterisation
Z1xxx	Fibre optics and accessories
FC200x-0000	Lightbus PCI fieldbus cards
C1xxx	PC Fieldbus Cards with ISA, VME bus, S5 interface

Related products
BK2000	Lightbus Bus Coupler for up to 64 Bus Terminals
BK2010	Lightbus Bus Coupler for up to 64 digital Bus Terminals

System
Lightbus	For further Lightbus products please see the system overview

 

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