System Manual – MOVIDRIVE® compact Drive Inverters
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Installation notes for PROFIBUS-DP interface (MC_41A)
Installation
Bus connection
for
MCF/MCV/MCS41
A
If the MOVIDRIVE
®
compact
drive inverter is at the start or end of a PROFIBUS seg-
ment, a T-bus connection with incoming and outgoing PROFIBUS cable is not normally
used for connection to the PROFIBUS network. Instead, only one PROFIBUS cable is
used. To prevent malfunctions in the bus system due to reflections, etc., the PROFIBUS
segment must be terminated using bus terminating resistors at the first and last stations.
As the bus terminating resistors in the inverter (DIP switch under the connection unit
→
Sec. "Removing the connection unit" on page 304) can be activated, you can dispense
with the Sub-D connector with integrated terminating resistors.
Bus termination
for MCH41A
MCH41A is not provided with bus terminating resistors. This enables the bus system to
be taken into operation more easily and reduces the number of error sources.
Use a connector with an integrated bus terminating resistor if the inverter is at the be-
ginning or end of a PROFIBUS segment and only one PROFIBUS cable leads to the in-
verter.
Switch on the bus terminating resistors for this PROFIBUS connector.
02894AEN
Figure 99: Activating the bus terminating resistor for MCF/MCV/MCS41A using the DIP switches
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1
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5
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nc
TERMINATION
TERMINATION
R
R
ON
ON
OFF
OFF
PROFIBUS-DP
PROFIBUS-DP
ON
1
2
R
ON
mA
V
2
2
S12
S11
Bus termination
= OFF
Bus termination
= ON
NOTE
•
Both DIP switches (TERMINATION 1 and 2) must always be activated.
•
Bus termination is implemented for cable type A to IEC 61158.
•
If you use a Sub-D connector with integrated bus terminating resistors, do not acti-
vate the terminating resistors on the inverter!
Summary of Contents for MOVIDRIVE compact MCH41A
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