Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Configuring a MASTERDRIVE for operation on a redundant PROFIBUS.
The configuration assumes that each of the two CBP boards on each PROFIBUS line is supplied with
the same information. This means that the output data must always be simultaneously output at 2
peripheral address ranges.
The values sensed in MASTERDRIVEs, values are also always feed back in parallel to the two
PROFIBUS lines.
Drive inverter parameterization assumes the following configuration:
System 1
System 2
First CBP
K3000
Second CBP
K8000
Masterdrives
M
The redundancy changeover in the drive inverter/converter can be implemented using the following
parameterization based on the configuration illustrated.
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redundancy.doc
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version 02/21/2001
Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Version 1: Most basic implementation
The most basic method uses the changeover of the BICO data set, i.e. the first CBP serves data set 1
and the second, data set 2 in the drive.
Changeover between the data sets can be initiated using the telegram failure binectors B035 ( first
bus ) and B45 ( second bus ).
Set the parameters to select the BICO_data sets ( P590 ) to value 35 ( binector 35 ).
Make the following assignment between commands and setpoints:
Main setpoint:
P443 Index 1 = 3002
P443 Index 2 = 8002
Setpoint from the first CBP
Setpoint from the second CBP, if the first
detects a bus failure.
Control commands: P554 Index 1 = 3100
P554 Index 2 = 8100
ON/OFF command from the first CBP
ON/OFF command from the second CBP
P565 Index 1 = 3107
P565 Index 2 = 8107
Fault acknowledgement from the first CBP
Fault acknowledgement from the second CBP
The telegram failure monitoring in the drive must remain active ( P722 = 10 ), otherwise binectors B35
and B45 will not be correctly processed.
In order that a bus system failure does not cause a drive inverter fault trip, the initiation of fault trip with
F082 must be disabled using parameter P781. In this case, Index 13 and Index 14 of P781 should
be set to 101.
The drive inverter is not fault tripped, even if both of the buses have failed.
The drive continues to operate with the data which was last received.
Free blocks used in the drive: NONE
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redundancy.doc
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version 02/21/2001
Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Version 2: Basic implementation with fault trip if both buses are faulted
With this version, if both of the bus systems are faulted, the drive is fault tripped with F148.
Free blocks which are used in the drive:
AND1 (FB78), inverter 1 (FB108), AND2 (FB79) and fault initiation F148 (FB259)
The following parameters still have to be set, supplementing version 1:
U061 = 602
U950.78
=4
U221.1 = 35
U950.79
=4
U221.2 = 641
U951.08
=4
U221.3 = 1
U952.59
=4
U222.1 = 35
U222.2 = 45
U222.3 = 1
U251 = 45
Version 3: Implementing a priority circuit configuration of a bus using the PLC and fault trip if
both buses are faulted
In this version, in addition, the PLC can switch a bus as priority bus, i.e. the evaluation of the bus
information ( bus 1 or bus 2 ) can be controlled from the PLC.
In this case, the changeover is controlled via bit 15 in control word 1 ( first telegram word ).
Alternatively, a binary input (i.e. a hardware signal from the PLC) can be used.
Free blocks which are used in the drive:
AND1 (FB78), inverter 1 (FB108), AND3 (FB89), OR1 (FB90), binary switch 1 (FB94), AND2 (FB79)
and fault initiation F148 (FB259)
The following parameters still have to be set, supplementary to version 1:
U061 = 602
U950.78
=4
U223.1
U221.1 = 35
U950.79
=4
U223.2
U221.2 = 641
U950.89
=4
U223.3
U221.3 = 1
U950.90
=4
U239.1
U222.1 = 35
U950.94
=4
U239.2
U222.2 = 45
U951.08
=4
U239.3
U222.3 = 1
U952.59
=4
U271.1
U251 = 45
U271.2 = 601
U271.3 = 603
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= 641
= 619
=1
= 3115
= 8115
=0
= 619
version 02/21/2001
Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Circuit to implement basic redundancy changeover with fault initiation due to faults on both buses:
We reserve the right to make changes.
 Siemens AG 2001
redundancy.doc
Page 4 / 6
Edition 21.02.2001
Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Circuit to implement redundancy with priority changeover from the PLC side ( Page 1 )
B3115
B8115
To P590 on Page 2
B35
B45
We reserve the right to make changes.
 Siemens AG 2001
redundancy.doc
Page 5 / 6
Edition 21.02.2001
Attachment to FAQ
Motion Control drives / software (DriveES, Tools)
PROFIBUS, redundant bus operation with MASTERDRIVES drives ( basic implementation )
Circuit to implement redundancy with priority changeover from the PLC side ( Page 2 )
B641 from
Page 1
We reserve the right to make changes.
 Siemens AG 2001
redundancy.doc
Page 6 / 6
Edition 21.02.2001