Beckhoff CX-B510 Series, Руководство пользователя

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Connection and cabling
CXxxxx-M510/B510 28 Version: 1.0
Shorter drop line lengths must be maintained when passive distributors ("multiport taps"), such as the
BECKHOFF ZS5052-4500 Distributor Box. The following table indicates the maximum drop line lengths and
the maximum length of the trunk line (without the drop lines):
Baud rate Drop line length with multiport
topology Trunk line length (without drop
lines)
1 Mbit/s < 0.3 m < 25 m
500 kbit/s < 1.2 m < 66 m
250 kbit/s < 2.4 m < 120 m
125 kbit/s < 4.8 m < 310 m
CAN cable
Screened twisted-pair cables (2x2) with a characteristic impedance of between 108 and 132 Ohm is
recommended for the CAN wiring. If the CAN transceiver’s reference potential (CAN ground) is not to be
connected, the second pair of conductors can be omitted. (This is only recommended for networks of small
physical size with a common power supply for all the participating devices).
ZB5100 CAN Cable
A high quality CAN cable with the following properties is included in BECKHOFF's range:
• 2 x 2 x 0.25 mm² (AWG 24) twisted pairs, cable colors: red/black + white/black
• double screened
• braided screen with filler strand (can be attached directly to pin 3 of the 5-pin connection terminal),
• flexible (minimum bending radius 35 mm when bent once, 70 mm for repeated bending)
• characteristic impedance (60kHz): 120 ohm
• conductor resistance < 80 Ohm/km
• sheath: grey PVC, outside diameter 7.3 +/- 0.4 mm
• Weight: 64 kg/km.
• printed with "BECKHOFF ZB5100 CAN-BUS 2x2x0.25" and meter marking (length data every 20cm)
ZB5200 CAN/DeviceNet Cable
The ZB5200 cable material corresponds to the DeviceNet specification, and is also suitable for CANopen
systems. The ready-made ZK1052-xxxx-xxxx bus cables for the Fieldbus Box modules are made from this
cable material. It has the following specification:
• 2 x 2 x 0.34 mm² (AWG 22) twisted pairs
• double screened braided screen with filler strand
• characteristic impedance (1 MHz): 126 ohm
• conductor resistance 54 Ohm/km
• sheath: grey PVC, outside diameter 7.3 mm
• printed with "InterlinkBT DeviceNet Type 572" as well as UL and CSA ratings
• stranded wire colors correspond to the DeviceNet specification
• UL recognized AWM Type 2476 rating