Manual – DFE32B Fieldbus Interface PROFINET IO
17
4
Installing the DFE32B option card in MOVIDRIVE® B
Assembly and Installation Notes
Please note:
• Use a 2x2 core twisted pair and shielded copper cable (data transmission cable with
braided copper shield). Connect the shield flatly on both sides of the electronics
shield clamp of MOVITRAC
®
B. Also connect the ends of the shield to GND. The ca-
ble must meet the following specifications:
– Cable cross section 0.25 mm
2
(AWG18) ... 0,75 mm2 (AWG23)
– Line resistance 120 Ω at 1 MHz
– Capacitance per unit length = 40 pF/m at 1 kHz
Suitable cables are CAN bus or DeviceNet cables.
• The permitted total cable length depends on the baud rate setting of the SBus:
– 250 kBaud: 160 m
– 500 kBaud: 80 m
– 1000 kBaud: 40 m
• Connect the system bus terminating resistor (S1 = ON) at the end of the system bus
connection. Switch off the terminating resistor on the other units (S1 = OFF). The
DFE32B gateway must always be connected either at the beginning or the end of the
system bus connection and feature a permanently installed terminating resistor.
INFORMATION
• There must not be any potential displacement between the units connected with
the SBus. Take suitable measures to avoid potential displacement, such as con-
necting the unit ground connectors using a separate cable.
• Point-to-point wiring is not permitted.
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