CMVPFB01A
8
Installation
PROFIBUS-DP uses active (powered) termination. Therefore it is strongly recommended that "stand alone"
active termination units are used to maintain the integrity of the network. If the SMV is used to provide
network termination, in the event of a power loss to the drive, network termination will also be lost.
PROFIBUS-DP
Master
+ Termination
SMV PROFIBUS-DP
Option Module
SMV PROFIBUS-DP
Option Module & Termination
A
B
A
IN
B
IN
A
OUT
PROFIBUS-DP
Network
B
OUT
PROFIBUS-DP
Network
A
IN
B
IN
A
OUT
B
OUT
Min 1m
Min 1m
Figure 8a: Network without Active Termination
Active
Termination
Module
PROFIBUS-DP
Network
Min 1m
PROFIBUS-DP
Master
+ Termination
SMV PROFIBUS-DP
Option Module
SMV PROFIBUS-DP
Option Module
A
B
A
IN
B
IN
A
OUT
PROFIBUS-DP
Network
B
OUT
PROFIBUS-DP
Network
A
IN
B
IN
A
OUT
B
OUT
Min 1m
Min 1m
A
B
Figure 8b: Network with Active Termination
NOTE
When the SMV PROFIBUS-DP module termination resistor is used, the IN and OUT terminals will
be totally isolated and only the IN terminals will have the correct termination. Therefore when
using an SMV PROFIBUS-DP module for network termination always ensure the incoming cable
is connected to the Ain and Bin terminals.
