SEW-Eurodrive Movidrive MDX61B User manual

Gearmotors \ Industrial Gear Units \ Drive Electronics \ Drive Automation \ Services
MOVIDRIVE
®
MDX61B
Fieldbus Interface DFI21B INTERBUS
with Fiber Optic Cable
M anual
A5.J25
Edition 04/2004
11264012 / EN

SEW-EURODRIVE – Driving the world

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3
1 Important Notes...................................................................................................... 4
2 Introduction ............................................................................................................ 5
2.1 Features of the DFI21B option....................................................................... 7
3 Assembly / Installation Instructions..................................................................... 8
3.1 Installing the DFI21B option card................................................................... 8
3.2 INTERBUS topologies with DFI21B option.................................................. 11
3.3 Bus connection via fiber optics (FO)............................................................ 13
3.4 Connecting fiber optic connectors................................................................ 14
3.5 Setting the DIP switches.............................................................................. 16
3.6 Display elements.......................................................................................... 18
4 Project Planning and Startup.............................................................................. 21
4.1 Startup of the drive inverter.......................................................................... 21
4.2 Project planning of the INTERBUS system.................................................. 23
4.3 Testing the PCP connection ........................................................................ 28
5 The PCP Interface................................................................................................. 30
5.1 Basic overview............................................................................................. 30
5.2 The PCP services ........................................................................................ 31
5.3 Parameters in the object list......................................................................... 33
5.4 Return codes................................................................................................ 39
6 Application Examples.......................................................................................... 41
6.1 Control via process data .............................................................................. 41
6.2 Parameter setting via PCP interface............................................................ 41
6.3 Representation of coding examples............................................................. 42
6.4 Procedure of a parameterization sequence................................................. 42
6.5 Reading a drive parameter........................................................................... 43
6.6 Writing a drive parameter............................................................................. 44
6.7 Writing IPOS variables/parameters via MOVILINK®parameter channel..... 45
6.8 Reading IPOS variables/parameters via MOVILINK®parameter channel... 45
6.9 Writing IPOS variables/parameters using the download parameter block... 47
7 Technical Data...................................................................................................... 48
7.1 DFI21B option.............................................................................................. 48
8 Index...................................................................................................................... 49
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4
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
1Important Notes
Handbuch
1 Important Notes
Documentation • Read through this manual carefully before you start installation and startup of
MOVIDRIVE®drive inverters with the DFI21B INTERBUS with fiber optic cable
option card.
• This manual assumes that the user has access to and is familiar with the
MOVIDRIVE®documentation, in particular the MOVIDRIVE ®MDX60B/61B system
manual.
• In this manual, cross references are marked with "→". For example, (→Sec. X.X)
means: Further information can be found in section X.X of this manual.
• A requirement of fault-free operation and fulfillment of any rights to claim under
guarantee is that you observe the information in the documentation.
Bus systems General safety notes on bus systems:
This communication system allows you to adjust the MOVIDRIVE®drive inverter to your
specific application very accurately. As with all bus systems, there is a danger of
invisible, external (as far as the inverter is concerned) modifications to the parameters
which give rise to changes in the inverter’s behavior. This may result in unexpected (not
uncontrolled) system behavior.
Safety and
warning notes
Always observe the safety and warning instructions in this publication!
•This manual does not replace the detailed operating instructions!
•Only electrical specialists are allowed to perform installation and startup
observing relevant accident prevention regulations and the MOVIDRIVE®
MDX60B/61B operating instructions!
Electrical hazard
Possible consequences: Severe or fatal injuries.
Hazard
Possible consequences: Severe or fatal injuries.
Hazardous situation
Possible consequences: Slight or minor injuries.
Harmful situation
Possible consequences: Damage to the unit and the
environment.
Tips and useful information.

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
5
2
Introduction
2 Introduction
Contents of this
manual
This user manual describes how to install the DFI21B INTERBUS with fiber optic cable
option card in the MOVIDRIVE®MDX61B drive inverter and how to start up
MOVIDRIVE®with the INTERBUS fieldbus system.
It also contains an explanation of all settings on the fieldbus option card and connection
variants with INTERBUS in the form of small startup examples.
Additional
documentation
For a simple and effective connection of MOVIDRIVE®to the INTERBUS fieldbus
system, you should request the following publications from SEW-EURODRIVE about
the fieldbus technology in addition to this manual:
•MOVIDRIVE
®Fieldbus Unit Profile manual
•MOVIDRIVE
®MDX60/61B system manual
The manual for the MOVIDRIVE®fieldbus unit profile describes the fieldbus parameters
and their coding. It also explains the whole range of control concepts and application
options in the form of small examples.
The parameter list is a list of all drive inverter parameters that can be read and written
via various communication interfaces such as RS-485, SBus and even the fieldbus
interface.
MOVIDRIVE®and
INTERBUS
The MOVIDRIVE®drive inverter together with the DFI21B option and its high-
performance universal fieldbus interface enable the connection to higher-level
automation systems via the open and standardized INTERBUS fieldbus system.
Unit profile The performance of the inverter (also referred to as the unit profile) that forms the basis
for INTERBUS operation, is fieldbus-independent and, therefore, uniform. This allows
the user to develop fieldbus-independent drive applications. This makes it much easier
to change to other bus systems, such as PROFIBUS (DFP 21B option) or DeviceNet
(DFD 21B option).
Drive parameters MOVIDRIVE®offers digital access to all drive parameters and functions via the
INTERBUS interface. The drive inverter is controlled via the fast, cyclical process data.
This process data channel offers the opportunity to initiate various drive functions such
as enable, controller inhibit, normal stop, rapid stop, and to specify setpoint values such
as setpoint speed, integrator time for acceleration/ramp down.
At the same time you can also use this channel to read back actual values from the drive
inverter, such as actual speed, current, unit status, fault number or reference signals.
READ/WRITE While the process data exchange generally occurs cyclically, the drive parameters can
be read or written only acyclically via the READ and WRITE services. This parameter
data exchange enables you to implement applications in which all the important drive
parameters are stored in the higher-level automation device, so that there is no need to
make manual parameter settings on the drive inverter itself.

6
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
2Introduction
In addition, you can route the MOVITOOLS®startup and diagnostic software via the
existing Ethernet/INTERBUS communication paths without having to establish another
diagnostic bus (such as RS-485).
Startup Generally, the INTERBUS DFI21B option card has been designed so that all
INTERBUS-specific settings, such as process data length and baud rate can be made
using the hardware switch on the option card. This manual setting means the drive
inverter can be integrated into the INTERBUS system and switched on quickly.
The parameter setting process can be performed automatically by the higher-level
INTERBUS master (parameter download). This forward-looking variant shortens the
system startup time and simplifies the documentation of your application program
because all the important drive parameters can now be stored directly in your control
program.
Monitoring
functions
The use of a fieldbus system requires additional drive system monitoring such as time
monitoring of the fieldbus (fieldbus timeout) or even special emergency stop concepts.
The MOVIDRIVE®monitoring functions can be customized to your application. You can
determine, for instance, which of the drive inverter’s fault responses should be triggered
in the event of a bus error. A rapid stop is useful for many applications, although this can
also be achieved by 'freezing' the last setpoint values so the drive continues operating
with the most recently valid setpoint values (for example, conveyor belt). As the
functions of the control terminals are still active in fieldbus operation, you can still
implement fieldbus-independent emergency stop concepts via the terminals of the drive
inverter.
Diagnostics The MOVIDRIVE®drive inverter offers you numerous diagnostic options for startup and
service.
For example, you can use the integrated fieldbus monitor to control both setpoint values
sent from the higher-level controller as well as the actual values. The MOVITOOLS®
software package offers a convenient diagnostic option that allows for a detailed display
of fieldbus and device state information in addition to the settings of all drive parameters
(including fieldbus parameters).
53593AXX
Figure 1: Typical design of an INTERBUS fiber optic system with MOVIDRIVE®MDX61B
MOVIDRIVE® MDX 61BINTERBUS
G4
LWL (2MBaud)
I/O (Rugged Line)

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
7
2
Features of the DFI21B option
Introduction
2.1 Features of the DFI21B option
Only the transfer medium of the INTERBUS changes for the user through the bus
cabling with fiber optic cables, which means bus design, project planning and
programming in the control system are not affected by the use of a fiber optic cable.
The DFI21B option for the MOVIDRIVE®drive inverters is characterized by the following
features:
Latest fiber optic
technology
Through the use of Supi-3 OPC (Optical Protocol Chip) technology, the light intensity
(output power) of the fiber optic components of the DF21B is controlled automatically so
that the fiber optic segment is always operated at optimum light intensity. At the same
time, this procedure allows for permanent quality monitoring of the optical transmission
line.
Integrated bus
end detection
The DFI21B recognizes automatically whether another participant is connected to the
outgoing interface.
500 kBaud or
2MBaud
Using a corresponding DIP switch, the DFI21B can be used in 500 kBaud and in
2 MBaud INTERBUS systems.
1 ... 6 process
data words / 1 ... 4
PCP words
The DFI21B supports a maximum of six input and output words in the INTERBUS
protocol. These six words are classified into process and PCP data using DIP switches.
In this way, an application-specific optimal INTERBUS interface can be implemented
between control system and drive inverter.
Two PCP
channels with
PCP version 3
Besides the PCP communications connection with a control system, the DFI21B also
supports a direct PCP connection to the INTERBUS interface module. This PCP
connection can be used for startup, programming and diagnostics of drive inverters via
an additional management PC on the production control level.
Compatibility
with DFI11B
Applications with DFI11B (RS-485 remote bus) can be changed to fiber optics via
DFI21B without changing the project planning and programming of the control system.
Part number 824 604 1

8
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Installing the DFI21B option card
Assembly / Installation Instructions
3 Assembly / Installation Instructions
3.1 Installing the DFI21B option card
Before you begin The DFI21B option card must be plugged into the fieldbus slot.
Observe the following notes before installing or removing an option card:
• Disconnect the inverter from power. Switch off the DC 24 V and the supply voltage.
• Take appropriate measures to protect the option card from electrostatic charge (use
discharge strap, conductive shoes, etc.) before touching it.
•Before installing the option card, remove the keypad and the front cover.
•After installing the option card, replace the front cover and the keypad.
• Keep the option card in its original packaging. Do not remove the option card from
the packaging until immediately before you are ready to install it.
• Hold the option card by its edges only. Do not touch any components.
•Option cards can only be installed and removed for MOVIDRIVE®MDX61B
sizes 1 to 6.
•Only SEW-EURODRIVE engineers can install or remove option cards for
MOVIDRIVE®MDX61B size 0!

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
9
3
Installing the DFI21B option card
Assembly / Installation Instructions
Installing and
removing an
option card
1. Remove the two retaining screws holding the card retaining bracket. Evenly pull the
card retaining bracket out from the slot (do not twist!).
2. Remove the two retaining screws of the black cover plate on the card retaining
bracket. Remove the black cover plate.
3. Position the option card onto the retaining bracket so that the three retaining screws
fit into the corresponding holes on the card retaining bracket.
4. Insert the retaining bracket with installed option card into the slot, pressing slightly so
it is seated properly. Secure the card retaining bracket with the two retaining screws.
53001AXX
Figure 2: Installing an option card in MOVIDRIVE®MDX61B sizes 1 to 6
1.
3.
4.
2.

10
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Installing the DFI21B option card
Assembly / Installation Instructions
5. Do not remove the protective cover of the fiber optics output and input until you are
ready to plug in the fiber optics connectors (→Sec. "Installing fiber optics
connectors").
6. The installation of the DFI21B option card is now complete.
7. Unused fiber optic connections must remain closed using a dust-proof
protective cover.
8. To remove the option card, follow the instructions in reverse order.

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
11
3
INTERBUS topologies with DFI21B option
Assembly / Installation Instructions
3.2 INTERBUS topologies with DFI21B option
Using the DFI21B option, the drive inverter is connected to an INTERBUS fiber optic
remote bus. By setting the baud rate, the DFI21B can be operated in 500 KBaud and
2 MBaud installations. Although the DFI21B supports the optical control of the
transmitter power, non-controlled fiber optic phases can also be formed if the previous
or next participant does not support optical control.
Installation examples for various bus topologies are listed below.
Direct interface
with 2 MBaud
The implementation of INTERBUS networks with optically controlled fiber optic
technology and a transfer rate of 2 MBaud offers the most efficient networkable solution
with DFI21B.
System
requirements
All installed components must support the baud rate 2 of MBaud and optical control to
provide an optimal system. It is possible to interface INTERBUS participants with and
without optical control of transmitter power.
Interface INTERBUS G4 interface module with optical system diagnostics (e.g.
S7 400 ETH DSC) and optically controlled fiber optics interface or opti-
cal converter (RS485/fiber optics), e.g. IBS OPTOSUB AK-MA/M/R-LK
CMD tool Version 4.50A or higher
Interbus participants All INTERBUS components must support 2 MBaud
53593AXX
Figure 3: 2 MBaud application with optically controlled fiber optic remote bus
MOVIDRIVE® MDX 61BINTERBUS
G4
LWL (2MBaud)
I/O (Rugged Line)

12
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3INTERBUS topologies with DFI21B option
Assembly / Installation Instructions
RS-485/fiber
optics mixed
operation with
500 KBaud
The DFI21B can also be used for the installation of sections of fiber optic lines within an
RS485 network.
System
requirements
Figure 4 shows an installation example for mixed operation with RS-485 and fiber optic
bus interface with INTERBUS options DFI11B (RS-485) and DFI21B (fiber optics).
The first drive inverter is coupled with the interface module via an RS-485 bus interface.
The outgoing remote bus interface is converted to fiber optics technology using an
OPTOSUB-PLUS-K/OUT and sent to the fiber optics Remote IN interface of the second
inverter. This segment does not feature optical control because it is not supported by the
inverter.
Data transfer between second and third inverter is accomplished with optically
controlled transmitter power. Interfacing the fourth inverter requires a conversion to RS-
485 technology by using OPTOSUB-PLUS-K/IN. This last fiber optics segment is again
operated without optical control because it is not supported by OPTOSUB-PLUS.
In general, the optical control is independent of the utilized firmware version of the
interface module because it is implemented on the ASIC level between INTERBUS
participants. To evaluate the optical system diagnostics, firmware version V4.44 or
higher is required for the INTERBUS interface module.
Interface All INTERBUS G4 interface modules
CMD tool Version 4.50 or higher
Interbus participants All types of INTERBUS participants with RS485 or fiber optics
technology (500 Kbaud)
Optical converters
(Polymer/HC) For incoming remote bus interface: OPTOSUB-PLUS-K/IN for outgoing remote bus interface: OPTOSUB-PLUS-K/OUT
53599AXX
Figure 4: INTERBUS system with fiber optic remote bus segment
A = uncontrolled fiber optic remote bus
B = optically controlled fiber optic remote bus
MOVIDRIVE® MDX 61B
INTERBUS
G4
I/O
OPTOSUB
plus
OPTOSUB
plus
RS-485 (CU)
(500 kBaud) RS-485 (CU)
LWL
A
LWL
B
LWL
A

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
13
3
Bus connection via fiber optics (FO)
Assembly / Installation Instructions
3.3 Bus connection via fiber optics (FO)
Bus interfacing for DFI21B is accomplished exclusively via fiber optics. Polymer fiber
cables and HCS cables may be used for this purpose.
Polymer fiber
cables
This type of cable is used for distances of up to 70 meters between two Interbus
participants. Depending on the system, several designs are available. This type of cable
is characterized by simple and cost-effective installation.
HCS cable This type of cable can be used for distances up to 500 m because they are characterized
by considerably lower attenuation compared to polymer fibers.
The bus cable must be at least 1 meter long. For shorter distances, use cable jumpers
from Phoenix Contact.
Please observe the following when installing fiber optic cables:
Installing optical
fiber cables
• Do not exceed the maximum cable length
• Observe the bending radius
• Do not squeeze or kink optical fiber cables
• Do not exceed the tensile load when installing the cable
• The optical fiber cable must be uncoiled using an uncoiling device
Protective
measures for
optical fiber
cables
• Protect optical fiber cables against strain and impermissibly small bending radii
• Install the cables without loops
• Protect cables against sharp edges
• Install optical fiber cables separately from power cables
• Use a special cable type if optical fiber cables are installed in special areas (e.g. in
the ground or close to welding robots)
Pre-fabricating
optical fiber
cables
• Strip off the outer cable sheath and the individual wire without damaging them
• Fix the individual wire in the connector (strain relief)
• Polish and install the front of the connector according to the guidelines
Measuringoptical
fiber cables
• Check whether the light intensity complies with the limit values (optical diagnostics
using CMD tool or fiber-optic measuring instrument)
For more information on proper routing of fiber optic cables, please refer to the Fiber
Optic Installation Guidelines from Phoenix Contact (item designation IBS SYS FOC-
ASSEMBLY).

14
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Connecting fiber optic connectors
Assembly / Installation Instructions
3.4 Connecting fiber optic connectors
The fiber optic cable is connected to the DFI21B option card using F-SMA connectors.
Two connectors are required each for the incoming and outgoing remote bus (transmit-
ter and receiver). SEW-EURODRIVE recommends using F-SMA connectors with
bending protection to ensure that the optimum bending radius is maintained.
Connector
assignment
for INTERBUS remote bus with fiber optic cable
Order information for F-SMA connector (e.g. Phoenix Contact).
Connecting fiber
optic cable to
MDX61B sizes 1
to 6
1. Do not remove the protective cover of the fiber optics input and output until
immediately before you are ready to plug in the fiber optic connector.
2. Keep the dust cover caps on any unused fiber optic ports on the DFI21B.
Position Signal Direction Wire color of FO cable
1 FO remote IN Receive data Orange (og)
2 (incoming remote bus) Send data Black (bk)
3 FO remote OUT Receive data Black (bk)
4 (outgoing remote bus) Send data Orange (og)
53600AXX
Figure 5: FO connector assignment of DFI21B
2
1
3
4
2
1
og
og
og
bk
bk
bk
Designation Article name
F-SMA connector set for polymer fiber cables (4 connectors) with bending
protection PSM-SET-FSMA/4-KT

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
15
3
Connecting fiber optic connectors
Assembly / Installation Instructions
Connecting fiber
optic cable
connectors to
MDX61B size 0
Access to the side of the unit is required for connecting the fiber optic connectors. If
several MOVIDRIVE®MDX61B size 0 inverters are installed next to one another,
the respective MDX61B must be removed to connect the fiber optic connector to the
DFI21B (→Figure 6).
Proceed as follows:
1. Disconnect the inverter from power. Switch off the DC 24 V and the supply voltage.
2. Take appropriate measures to protect the option card from electrostatic charge (use
discharge strap, conductive shoes, etc.) before removing the MDX61B unit.
3. Unplug all connectors from the MDX61B unit.
4. Loosen the retaining screw of the MDX61B on the mounting plate. Remove the unit.
5. Attach the fiber optic connectors to the DFI21B. Tighten the fiber optic connectors
fingertight using a suitable tool (e.g. pointed pliers).
6. To install the MDX61B, follow the instructions in reverse order.
53667AXX
Figure 6: Removing / installing MDX61B and connecting fiber optic connector to MDX61B size 0
1. 2.

16
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Setting the DIP switches
Assembly / Installation Instructions
3.5 Setting the DIP switches
DIP switch
setting
The six DIP switches S1-1 to S1-6 on the front side of the option card are used for setting
the process data length and PCP length as well as selecting the baud rate.
If DIP switch settings are incorrect, the drive inverter responds with the ID code
"Microprocessor not ready" (38 hex).
Setting the baud
rate
The baud rate is selected using DIP switch S1-6. The selected baud rate takes effect
immediately and may interrupt the current data communication of the INTERBUS.
[1] Number of process data (1 to 6 words)
[2] Number of PCP words (1, 2 or 4 words)
Baud rate: [3] OFF: 2 MBaud / [4] ON: 0.5 Mbaud
The figure depicts the following settings:
Process data width: 2 PD
Number of PCP words: 1 PCP
Baud rate: 2 Mbaud
03700AXX
ON
1234
PACE R
ON
2M
56
20
21
22
1
42
0.5M
[2]
[1]
[3] [4]
Before changing a DIP switch setting, disconnect the drive inverter from power (supply
voltage and 24 V backup operation). The settings of DIP switches S1-1 through S1-5
only become effective during initialization of the drive inverter.

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
17
3
Setting the DIP switches
Assembly / Installation Instructions
Setting the pro-
cess data length
and PCP length
A maximum of six INTERBUS data words can be exchanged between the INTERBUS
interface module and the DFI21B option. These data words can be distributed to the
process data channel and the PCP channel using DIP switches S1-1 to S1-5. The
restriction to six data words results in settings that cannot be mapped onto the Interbus.
In case of an incorrect setting, the DFI21B responds with ID code "Microprocessor not
ready" (38hex) and signals this incorrect setting with the red TR LED. The following
figure shows the limit conditions for the setting of process data length and PCP length
with the following restrictions:
[A]PCP setting not in effect!
03701AXX
Figure 7: Settings for DFI21B operation with six process data
Process data length in words PCP length ID code
6 PCP setting not in effect;
no PCP channel available 03hex (3dec)
ON
1234
PACE R
ON
2M
6PD
56
2
0
2
1
2
2
1
42
0.5M
ID: 03hex (3dez)
[A]
53597AXX
Figure 8: Examples for setting PCP length and maximum process data length
O
N
1
2
3
4
P
A
C
E
R
ON
2M
5
6
2
0
2
1
2
2
1
42
0.5M
1 PCP
max.
5 DP
O
N
1
2
3
4
P
A
C
E
R
ON
2M
5
6
2
0
2
1
2
2
1
42
0.5M
2 PCP
max.
4 DP
O
N
1
2
3
4
P
A
C
E
R
ON
2M
5
6
2
0
2
1
2
2
1
42
0.5M
4 PCP
max.
2 DP
O
N
1
2
3
4
P
A
C
E
R
ON
2M
5
6
2
0
2
1
2
2
1
42
0.5M
0 PCP
max.
5 DP
ID: 38 hex (56 dez) ID: E3 hex (227 dez) ID: E0 hex (224 dez) ID: E1 hex (225 dez)
PCP length Maximum process data length ID code
1 word 5 words E3 hex (227dec)
2 words 4 words E0 hex (224dec)
4 words 2 words E1 hex (225dec)
If maximum length is exceeded or for
setting 0 or 7 PD 38 hex (56dec) = "Microprocessor not ready"
All settings not listed here result in the ID code "Microprocessor not ready." The inverter
then signals "PD configuration" = 0PD in parameter P090 and indicates this incorrect
setting by activating the red TR LED on option DFI21B.

18
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Display elements
Assembly / Installation Instructions
3.6 Display elements
The DFI21B option card has seven LEDs for diagnostics of the INTERBUS system.
These LEDs indicate the current state of the DFI21B and the INTERBUS system (Figure
9).
Figure 10 shows frequently occurring LED patterns of the diagnostics LEDs and their
meanings. A detailed description of the LEDs can be found in the following tables.
53595AXX
Figure 9: Diagnostics LEDs of DFI21B
53596AXX
Figure 10: Frequently occurring LED patterns
[A] Power-on of inverter (INTERBUS not yet active)
[B] Incorrect setting of DIP switches (INTERBUS not yet active)
[C] Initialization phase of INTERBUS system
[D] Correct INTERBUS operation
[E] Incorrectly set baud rate
U
L
RC
BA
RD
FO1
TR
FO2
Logic Voltage (gn = OK)
Remote Cable Check (gr = OK)
Bus Active (gn = ok)
Remote Bus Disabled (rd = off
)
Fiber Optic 1 (ye = not OK)
Fiber Optic 2 (ye = not OK)
Transmit (gn = PCP active)
U
L
RC
BA
RD
FO1
TR
FO2
GN
OFF
OFF
RD
YE
YE
YE flash, OFF
U
L
RC
BA
RD
FO1
TR
FO2
GN
OFF
OFF
RD
YE
YE
RD
U
L
RC
BA
RD
FO1
TR
FO2
GN
GN
GN flash
RD
YE flash
YE flash
OFF
U
L
RC
BA
RD
FO1
TR
FO2
GN
GN flash
OFF
RD
YE
YE
OFF
U
L
RC
BA
RD
FO1
TR
FO2
GN
GN
GN
OFF
OFF
OFF
OFF / PCP: GN
[A] [B] [C] [D] [E]

Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
19
3
Display elements
Assembly / Installation Instructions
LEDUL"U-Logic"
(green)
LED RC "Remote
Cable Check"
(green)
LED BA "Bus
Active" (green)
LED RD "Remote
Bus Disable"
(red)
LED FO1 "Fiber
Optic 1" (yellow)
State Meaning Fault correction
On Power supply of bus
electronics is present -
Off Power supply of bus
electronics is missing Verify that the option card is seated correctly and check the 24 V power supply of the inverter.
State Meaning Fault correction
On Incoming remote bus connec-
tion is functioning properly -
Off Incoming remote bus connec-
tion is malfunctioning Check the incoming fiber optic remote bus and the LED FO1.
State Meaning Fault correction
On Data transfer on INTERBUS is
active -
Off No data transfer; INTERBUS
stopped Check the incoming remote bus cable. Use the diagnostic display on the INTERBUS interface module (master) to
localize the fault further.
State Meaning Fault correction
On Outgoing remote bus switched off -
Off Outgoing remote bus switched on -
State Meaning Fault correction
On Monitoring of incoming fiber optic cable. If the
previous participant
• possesses an optical line diagnostics, the
system reserve of the opticaltransmission
was undershot
• does not possess an optical line diagnos-
tics, a control of the optical transmission
power is not possible
Check the incoming fiber optic cable for cable
quality, correct connector installation, bending
radius, etc. Use the special optical diagnos-
tics of the CMD tool or a fiber optic measure-
ment instrument for further localization of
faults.
Off Incoming fiber optic cable is functioning
properly -

20
Manual – MOVIDRIVE® MDX61B Fieldbus Interface DFI21B INTERBUS with Fiber Optic Cable
3Display elements
Assembly / Installation Instructions
LED FO2 "Fiber
Optic 2" (yellow)
LED TR "Trans-
mit" (green)
LED TR "Trans-
mit" (yellow or
red)
State Meaning Fault correction
On Monitoring of continuing fiber optic cable. If
the next participant
• possesses an optical line diagnostics, the
system reserve of the opticaltransmission
was undershot
• does not possess an optical line diagnos-
tics, a control of the optical transmission
power is not possible
Check the incoming fiber optic cable for
cable quality, correct connector installation,
bending radius, etc. Use the optical diagnos-
tics of the CMD tool or a fiber optic measure-
ment instrument for further localization of
faults.
Off Continuing fiber optic cable is functioning
properly -
State Meaning Fault correction
When the LED TR shows green, it corresponds to the Interbus standard.
Off No PCP communication -
Green PCP communication is active or INTERBUS startup (parameter access
via INTERBUS PCP channel) -
State Meaning Fault correction
The LED TR indicates states within the system that usually do not occur during INTERBUS operation.
Off or
green Normal operation (see table for TR = green) -
Flashing
yellow Inverter is currently in the initialization phase -
Constant
read Incorrect DIP switch configuration selected, INTERBUS operation is not possible. Check the settings of the DIP switches S1. Correct the DIP switch settings, if necessary,
and switch the unit on again.
Flashing
red Incorrect DIP switch configuration or INTER- BUS option card is defect, INTERBUS opera-
tion is not possible.
Check the settings of the DIP switches S1. If
the settings are correct, contact the SEW
Electronics Service.