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CHAPTER 3: FIELDBUS INTERFACE
NOTE:
NOTE
Profibus termination
Profibus DP-parameterization
MM200 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
Figure 3-1: Comms board power supply configuration
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Protocol Options
SW1
DeviceNet
ON
Profibus
OFF
Supply Options
SW5
Internal
ON
External
OFF
Other switch combinations are NOT ALLOWED.
Profibus segments should be terminated by a bus termination. The MM200 termination
voltage is +5V and the connections are as follows:
Figure 3-2: Profibus termination
+5V
Line B
Line A
Data ground
If the bus voltage level is higher, such as 24V, an external device must be used to drop the
voltage to the required +5V termination level. The Procentec T1 Terminator or equivalent is
suitable to provide proper termination to the MM200 from a 24V level.
The MM200 relay supports mandatory parameterization. The relay keeps its user
parameter data / setpoints in non-volatile memory and does not need device related
parameterization during startup of the DP master. The EnerVista MM200 Setup software is
the best tool for user parameterization of the MM200 device.
= switch position
SW2
ON
OFF
SW6
ON
OFF
PROFIBUS DP
INTERNAL
SUPPLY
EXTERNAL
SUPPLY
888845A1.CDR
SW3
SW4
OFF
OFF
ON
ON
SW7
SW8
OFF
OFF
ON
ON
Ω
390
Ω
220
Ω
390
888847A1.CDR
3-3
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