BECKHOFF BK7500 - Manual (Page 13)

Basic information
BK7500 13
Electrical data
The SERCOS coupler BK7500 and BK7510 differ by virtue of their capacity
levels. The following data distinguishes between a standard and an
economy variant (BK7500 and BK7510). Compatability with the other
SERCOS components is guaranteed in any case. Contrary to the standard
bus coupler, the economy variant is limited of the number of I/O´s. Thus,
there is no possibility of connecting inputs and outputs other than digital
ones. The following table lists an overview of all data:
Technical data Beckhoff SERCOSCoupler BK7500
Supply voltage 24 V, - 15% +20%
Input current 105 mA typ.
900 mA max.
K bus supply current up to 1.75 A max.
Potential isolation 500 Vrms (K-bus / peripheral voltage)
Number of bus terminals 64
Digital peripheral signals 256 inputs and outputs
Analog peripheral signals 128 inputs and outputs
Peripheral bytes 512 input byte and 512 output byte
Configuration Via SERCOS Master or KS2000
Fieldbus medium Fibre optic Z1100
Plug connection F-SMA-Norm IEC 872-2 Z1003 for Z1100
Baud rate 2 or 4 Mbaud ( 8 and 16 Mbaud in preparation)
Voltage of the power contact 24V DC / AC
Power contacts current
drawn
10 A
Electric strength 500 Vrms (power contact / supply voltage)
Typical weight 150g
Operating temperature 0°C ... +55°C
Storage temperature -25°C ... +85°C
Relative humidity 95% without dew formation
Vibration/shock stability According to IEC 68-2-6 / IEC 68-2-27
EMC-immunity. Burst / ESD According to EN 61000-4-4 / EN 61000-4-2 limit value according to EN 50082-2-4
Installation location Arbitrary
Protection class IP20
Current consumption on the
K-Bus
For operation of the K-bus electronics, the bus terminals require energy
from the K-bus that is supplied by the bus coupler. Refer to the catalog or
the corresponding data sheets of the bus terminals for details of the K-bus
current consumption. In doing so, pay attention to the maximum output
current of the bus coupler that is available for powering the bus terminals.
Using a special power supply terminal (KL9400), power can be fed back
into the K-bus at any chosen point. If you wish to use a power supply
terminal, please contact Beckhoff’s technical support. .