Technical data
BK3120
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
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/storage temperature
-25…+60 °C/-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. class/installation pos.
IP 20/variable
Approvals/markings
CE, UL, ATEX, GL, IECEx, cFMus
Ex marking
ATEX: II 3 G Ex nA IIC T4 Gc IECEx: Ex nA IIC T4 Gc Ex tc IIIC T135 °C Dc cFMus: Class I, Division 2, Groups A, B, C, D Class I, Zone 2, AEx ec IIC T4 Gc
