CHAPTER 4: FIELDBUS INTERFACE
PROFIBUS DP
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
4–5
Figure 4-1: Comms board power supply configuration
NOTE
NOTE:
Other switch combinations are
not allowed
.
Profibus termination
Profibus segments should be terminated by a bus termination. The MM300 termination
voltage is +5V and the connections are as follows:
Figure 4-2: Profibus termination
If the bus voltage level is higher, such as 24V, an external device must be used to drop the
voltage to the re5V termination level. The Procentec T1 Terminator or equivalent is
suitable to provide proper termination to the MM300 from a 24V level.
Profibus DP-parameterization
The MM300 relay supports mandatory parametrization. The relay keeps its user parameter
data / setpoints in a non-volatile memory and does not need device related
parametrization during startup of the DP master. The EnerVista MM300 Setup software is
the best tool for user parametrization of the MM300 device.
Protocol Options
SW1
SW2
SW3
SW4
DeviceNet
ON
ON
OFF
OFF
Profibus
OFF
OFF
ON
ON
Supply Options
SW5
SW6
SW7
SW8
Internal Supply
ON
ON
OFF
OFF
External Supply
OFF
OFF
ON
ON
PROFIBUS WITH INTERNAL SUPPLY
PROFIBUS WITH EXTERNAL SUPPLY
ON
ON
853845A1.CDR
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
= switch position
853847A1.CDR
+5V
Line B
Line A
Data ground
390
220
390
Ω
Ω
Ω
