SSD Drives 8903/PB User manual

Copyright 2006 SSD Drives Limited (formerly Eurotherm Drives Limited)
All rights strictly reserved. No part of this document may be stored in a retrieval system, or transmitted in any form or by
any means to persons not employed by an SSD Drives company without written permission from SSD Drives Ltd.
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resulting therefrom.
8903/PB Profibus
Communications Interface
Technical Manual
HA469267U001 Issue 2
Compatible with 890 Firmware Version 1.4 onwards

Cont.3
WARNING!
During commissioning, remove the fuses (or trip the circuit breaker) on your 3-
phase supply.
Make sure the power is OFF, and that it cannot be switched on accidentally whilst
you are working.
Please read this information BEFORE installing the equipment.
Intended Users
This manual is to be made available to all persons who are required to install, configure or
service equipment described herein, or any other associated operation.
The information given is intended to highlight safety issues, and to enable the user to obtain
maximum benefit from the equipment.
Application Area
The equipment described is intended for industrial motor speed control.
Personnel
Installation, operation and maintenance of the equipment should be carried out by qualified
personnel. A qualified person is someone who is technically competent and familiar with all
safety information and established safety practices; with the installation process, operation and
maintenance of this equipment; and with all the hazards involved.
REFER TO YOUR MAIN PRODUCT MANUAL FOR SPECIFIC SAFETY
INFORMATION ABOUT THE DEVICE YOU ARE CONTROLLING
Acknowledgements
DSE (Drives System Explorer) is a registered trademark of SSD Drives, Inc.
Simatic and STEP 7 are registered trademarks of Siemens.
Profibus is a trademark of PROFIBUS International.
!
Safety Information
WARRANTY
SSD Drives warrants the goods against defects in design, materials and workmanship
for the period of 12 months from the date of delivery on the terms
detailed in SSD Drives Standard Conditions of Sale IA058393C.
SSD Drives reserves the right to change the content and product specification
without notice.

Cont.4

Contents
Contents Page
Cont.5
PROFIBUS COMMUNICATIONS INTERFACE 1
Introduction ..................................................................................................... 1
Product Features ........................................................................................................ 1
Product Code............................................................................................................. 1
Installation....................................................................................................... 2
Wiring the System ...................................................................................................... 5
•PROFIBUS-DP Cable Specification ............................................................ 5
•PROFIBUS-DP Connectors ........................................................................ 6
•Pin Assignment of the Bus Connector ........................................................ 6
•PROFIBUS-DP Network Termination.......................................................... 7
•Repeaters ................................................................................................ 7
Setting Node Address...................................................................................... 8
LED Indications ................................................................................................ 8
Initial Power-on Checks .............................................................................................. 8
Drive Diagnostics............................................................................................. 9
•The Profibus MMI View............................................................................. 9
•Parameter Descriptions ............................................................................ 9
Configuring the Profibus System ................................................................... 10
Step 1: Configuring the Profibus TechCard using DSE 890......................................... 10
•Step 1.1: Inserting a PROFIBUS Function Block........................................ 10
•Step 1.2: Attaching Fieldbus Connectors ................................................. 11
•Step 1.3 : Configuring the Fieldbus Connectors....................................... 12
•DSE Data Types ..................................................................................... 13
•Profibus PLC Data Types ........................................................................ 13
•Conversion of DSE Type < > Profibus Type ............................................ 14
•Profibus Status Information..................................................................... 14
Step 2: Configuring the PLC/SCADA Supervisor......................................................... 15
The Network Interface .............................................................................................. 18
•PKW (Demand Data) Processing ............................................................. 18
•Command............................................................................................. 18
•Parameter Reference.............................................................................. 19
•Parameter Value or Error Code .............................................................. 19
Appendix A : Troubleshooting....................................................................... 20
•890 Profibus TechCard Status LED.......................................................... 20
Appendix B : DSE/Profibus Conversion Rules................................................ 21
•LOGIC Type Connector ......................................................................... 21
•INTEGER Type Connector....................................................................... 22
•VALUE Type Connector .......................................................................... 23

Contents
Contents Page
Cont.6

1
8903/PB Profibus Communications Interface
PROFIBUS COMMUNICATIONS INTERFACE
Introduction
This manual describes the SSD Drives' ProfibusCommunications Interface Option
(TechCard).
Product Features
•Available for 890 products
•Easy plug-in installation
•Suitable for use with drive models:
890CD Common Bus Drive and 890SD Standalone Drive
using 890 firmware version 1.4 onwards
•LED’s to indicate board and communications status
•Hardware/software selectable Node Address
1 STATUS LED 4 X41 - Profibus Network Connector
2 SYNC LED - for future use 5 Connector to Control Board
3 Node Address
Product Code
Part Number: 8903/PB/00 - Profibus TechCard
Fi
g
ure 1. Profibus TechCard
1
5
2
3
4

2
8903/PB Profibus Communications Interface
1
1
3
2
2
Installation
WARNING!
Before installing, ensure that the
drive wiring is electrically isolated and
cannot be made “live” unintentionally
by other personnel.
Wait 5 minutes after disconnecting
power before working on any part of
the system or removing the covers
from the drives.
To Remove the Control Board
1. Remove the blank covers, each secured
by a single screw, that fit over the
TechCard holes.
2. Loosen the top and bottom screws in
the blue handles of the Control Board
(2).
3. Pull gently on the handles and slide the
Control Board (2) out of the drive.
Note: Save the blank cover and screw for future
use. The drive should not be operated
without a TechCard or blank cover.
When fitted, these maintain the drive's
IP20 rating.
Figure 3. Front of 890 drive showing
Control Board fitted
Figure 2. 890 showing Control Board
withdrawn with Options fitted

3
8903/PB Profibus Communications Interface
Fitting the TechCard
The TechCard fits onto the Control Board.
1. Insert the connector into the TechCard as shown. The legs of the connector will protrude
through into the connector on the other side of the TechCard.
2. Press the assembly into the TOP connector (adjacent to terminals X10, X11 and X12) on
the Control Board. Ensure that the front panel of the TechCard overlaps the front of the
Control Board. Ease the connector at the TechCard so that the two pcb's are parallel when
viewed on edge.
Figure 4. Fitting the connector to the TechCard

4
8903/PB Profibus Communications Interface
Re-fitting the Control Board
1. Slide the board into the drive, engaging the edges of the boards into the slots. Push until the
back edge of the Control Board pcb locates with the connectors in the drive.
2. Tighten in position using the top and bottom screws in the blue handles of the Control
Board.
3. Screw the TechCard in position using the captive screw on the front of the TechCard.
Figure 5. 890 Control Board with TechCard fitted

5
8903/PB Profibus Communications Interface
Wiring the System
WARNING!
Before installing, ensure that the drive and all wiring is electrically isolated and
cannot be made “live” unintentionally by other personnel.
Wait 5 minutes after disconnecting power before working on any part of the system
or removing the covers from the Drive.
Note: It is possible to make serial communications operate without adhering to the following
recommendations, however, the recommendations will promote greater reliability.
PROFIBUS-DP Cable Specification
PROFIBUS-DP cable uses a specific colour code (red/green). You should maintain this colour
code throughout your network. The cable has a single twisted pair with overall shielding.
The bus line is specified in IEC 61158 and it can be used in accordance with the table below.
Cable Parameters PROFIBUS line
Surge impedance in Ω135 … 165
Capacitance per unit length (pF/m) < 30
Loop resistance (Ω/km) 110
Core diameter (mm) 0.64
Core cross-section (mm2) > 0.34
Note: Belden B3079E cable meets the above specification.
Maximum Line Length Per Bus Segment
Using the specified cable parameters, the maximum line length of a bus segment are as follows:
Transfer rate in kbit/s 9.6 31.25 45.45 93.75 187.5
Cable length 1200 1200 1200 1000 1000
Transfer rate in kbit/s 500 1500 3000 6000 12000
Cable length 400 200 100 100 100
Figure 6. Simple Wiring Diagram
Last drive has
terminating resistors

6
8903/PB Profibus Communications Interface
PROFIBUS-DP Connectors
You should use connectors recommended by Profibus. These connectors will have a shield
clamp providing shield continuity and will help to ensure good noise immunity of your network.
We recommend the use of the horizontal Erbic range of PROFIBUS-DP connectors from ERNI:
♦ERNI Part number 103648, grey - used on all nodes in the middle of the network
♦ERNI Part number 103649, yellow - termination connector
♦ERNI Part number 134728, grey - includes switchable termination
For further information, visit www.erni.com
Pin Assignment of the Bus Connector
5
4
3
2
1
9
8
7
6Shield
RxD/TxD-P (Green)
CNTR-P
DGND (for termination only)
RxD/TxD-N (Red)
VP (for termination only)
Pin
Number
PROFIBUS-DP
Cable
Signal Meaning
1 Braid Shield Shield / protective ground
3 Red (B) RxD/TxD-P Receive data / transmission data positive
4 CNTR-P Control signal for repeater (RTS)
5 DGND Data transmission potential (ground to 5V)
USE ONLY FOR TERMINATION RESISTORS
6 VP Supply voltage of the terminating resistors-
P, (+5V)
USE ONLY FOR TERMINATION RESISTORS
8 Green (A) RxD/TxD-N Receive data / transmission data negative
Earthing the Shield
The PROFIBUS standard suggests that both ends of the transmission line should be connected
to safety earth. If you do this, ensure that differences in local earth potential do not allow
circulating currents to flow, as not only can these induce large common mode signals in the data
lines, but they can also produce potentially dangerous heating in the cable. If in doubt, earth the
shield at only one section of the network.

7
8903/PB Profibus Communications Interface
PROFIBUS-DP Network Termination
Failure to terminate a network correctly can reduce the noise immunity of the network and
affect performance.
A termination resistor must be fitted at each end of the network to prevent interference.
If too many resistors are fitted to the network, the resulting reduced signal levels may cause
nodes to miss bits of information. If network overload becomes excessive, the reduced signal
levels may prevent the nodes from detecting any activity.
Connect terminating resistors to the end drives as shown below. (All resistors ±5%, minimum ¼
Watt).
Data line B (3)
Data line A (8)
GND (5)
VP (6)
390
Ω
220
Ω
390
Ω
Terminating resistors
on the bus
Signals at connector
Pin number in parentheses
Repeaters
The maximum number of nodes allowed on a single PROFIBUS-DP network segment is 32. A
repeater can be used to extend the network length and/or to allow more than 32 nodes to be
connected.
Note: CNTR-P (Pin Number 4) is a TTL level signal that can be connected to a repeater. Most
repeaters automatically switch between transmitting and receiving and so do not need
this connection.
Figure 7. Terminating Resistor Connection

8
8903/PB Profibus Communications Interface
Setting Node Address
The DIP switches allow you to select 8 bits for the Node Address (NA) (0-255)
Note: If all 8 bits are in the ON position, the Node Address is set by software.
8903/PB
Front View
DIP
Switch Value Function Example
11(2
0)0OFF
22(2
1)0OFF
34(2
2)0OFF
48(2
3)0OFF
5 16 (24)0OFF
6 32 (25)1ON
7 64 (26)0OFF
8 128 (27)
Node Address
0 – 255
0 OFF
NA = 32
Note: Only addresses 1 to 125 are valid Profibus addresses.
LED Indications
The STATUS LED indicates the state of the connected network.
The SYNC LED is for future use.
Initial Power-on Checks
With the correct connections to the active PLC/SCADA supervisor, the
STATUS LED'will lite. Refer to Appendix A : Troubleshooting, page20
for details of LED indications.

9
8903/PB Profibus Communications Interface
Drive Diagnostics
The Profibus MMI View
With the Profibus TechCard correctly installed, the Keypad will display a set of parameters for
PROFIBUS.
These are read-only parameters - diagnostics.
Parameter Descriptions
BAUDRATE Read Only Range: Enumerated - see below
Baudrate of the Profbus network connection set by PLC.
Enumerated Value : BAUDRATE
0 : 12 Mbits/sec
1 : 6 Mbits/sec
2 : 3 Mbits/sec
3 : 1.5 Mbits/sec
4 : 500 kbits/sec
5 : 187.5 kbits/sec
6 : 93.75 kbits/sec
7 : 45.45 kbits/sec
8 : 19.2 5 kbits/sec
9 : 9.6 kbits/sec
10 : UNKNOWN - auto baud not completed
ADDRESS Read Only Range: 0 to 125
The Profibus node address.
If all the DIP switches are set to ON, the Address is set by the DSE 890 configuration.
A specific Address can be set using the DIP switches. Refer to "Setting Node Address",
page 8.
If all the DIP switches are set to OFF (i.e. the Address is set to zero) the Profibus option is
disabled and does not appear on the Profibus network (see the STATUS parameter
below).
STATUS Read Only Range: Enumerated - see below
State of the ControlNet network connection.
Enumerated Value : STATUS
0 : MISSING OR FAULT
1 : DISABLED
2 : BAUD SEARCH
3 : WAIT PARAM
4 : WAIT CONFIG
5 : DATA EXCHANGE
6 : DATA EXCH NO WD
7 : DATA EXCH ERROR
8 : DATA EXCH ER NO WD
ADDRESS METHOD Read Only Range: Enumerated - see below
Diagnostic showing the node address setting method. If all of the Address swtiches on
the Profibus TechCard are set ON, then the method is HARDWARE (switches), otherwise
it is SOFTWARE (DSE 890).
Enumerated Value : Address Method
0 : SOFTWARE
1 : HARDWARE

10
8903/PB Profibus Communications Interface
Configuring the Profibus System
To configure the Profibus system, complete the steps below. Our example is shown using a PLC
configured using Siemens STEP7 For other systems, refer to the manufacturer's instructions.
Step 1: Configuring the Profibus TechCard using DSE 890
You can configure your Profibus TechCard using DSE 890.
Follow the instructions below.
Step 1.1: Inserting a PROFIBUS Function Block
Display your configuration page. Click on the Block menu at the top of the screen.
1. Move the cursor down to select "890 Comms" and select "Profibus".
2. Click to select the Profibus block. Move this to where you want on the screen then click
again to place the block.
Figure 8. Configuration showing PB function block

11
8903/PB Profibus Communications Interface
Step 1.2: Attaching Fieldbus Connectors
Six fieldbus connector types are available:
FB Logic Input FB Integer Input FB Value Input
FB Logic Output FB Integer Output FB Value Output
Input connector : the data is sent from PLC ¤890
Output connector : the data is sent from 890 ¤PLC
The fieldbus connectors must be added before they will appear in the Profibus function block.
Note: The function block and connectors can be renamed by using the right mouse button and
selecting Rename Block.
Figure 9. Configuration showing PB function block and Fieldbus Connectors

12
8903/PB Profibus Communications Interface
Step 1.3 : Configuring the Fieldbus Connectors
Double-click on the function block to display the dialog below. The fieldbus connectors (inputs
and outputs) are assignable in the function block along with their data type to/from the PLC.
The option slot and Address can also be selected.
To configure the input and output connectors you have placed in the configuration:
1. Expand the Inputs and Outputs trees to reveal the registers. By default the trees each have
one register. To add more registers click on adjacent to New…
Note: Note that once a register has been added it cannot be deleted. However, by setting it to
"unused", and setting its Type to "NONE", it will be disregarded by the PLC.
2. Select the drop-down menu adjacent to Input to choose the required input/output connector
on the Register. For example below, Register 1 "Input" is shown with the possible fieldbus
selections that have been placed in the configuration: FII.1 (Fieldbus Integer Input 1),
FLI.1 (Fieldbus Logic Input 1), FVI.1 (Fieldbus Value Input 1) etc.

13
8903/PB Profibus Communications Interface
3. Select the drop down menu adjacent to Type to choose the required PLC type on Register
1, for example.
4. Set up all the input/output registers in a similar way.
5. The Address can be selected in the range 0 – 125. This can be confirmed by the ADDRESS
diagnostic on the Keypad.
Note: The Address set in DSE 890 will only be used if the Address
switches on the Profibus TechCard are set to ON.
If the Address is set to zero and the switches on the Profibus
TechCard are all set to ON, the option is disabled and will not
appear on the Profibus network.
6. "Option Slot" = A (top). The Profibus TechCard can only be fitted
in the OPTION A slot on the front of the drive. This is the default
setting for "Option Slot".
DSE Data Types
Data Type Description Range
LOGIC Logic False (F) and True (T)
INTEGER 32-bit signed integer -2,147,483,648 to 2,147,483,647
VALUE 32-bit fixed point value -32768.0 to 32767.9999
Profibus PLC Data Types
Data Type Description Range PLC Size
Boolean 8-bit Boolean False (0x00) and True (0x01) byte
Integer8 8-bit signed integer -128 to 127 byte
Integer16 16-bit signed integer -32,768 to 32,767 word
Integer32 32-bit signed integer -2,147,438,648 to 2,147,483,647 dword
Unsigned8 8-bit unsigned integer 0 to 255 byte
Unsigned16 16-bit unsigned integer 0 to 65,535 word
Unsigned32 32-bit unsigned integer 0 to 4,294,967,295 dword
FloatingPoint 32-bit IEEE-754
floating-point value
1.19209290e-38 to
3.4028235e+38
dword
MMI Menu Map
1SETUP
2COMMUNICATIONS
3CONTROLNET
BAUDRATE
ADDRESS
STATUS
ADDRESSING MODE

14
8903/PB Profibus Communications Interface
Conversion of DSE Type < > Profibus Type
The DSE fieldbus connectors are each assigned a Profibus PLC "Type" as described in "Step 1.3
: Configuring the Fieldbus Connectors" on page 12.
The conversion between the DSE type and the PLC type is performed automatically (refer to
Appendix B : DSE/Profibus Conversion Rules, page 21).
Any PLC type can be assigned to a fieldbus connector
Some recommended PLC type assignments to fieldbus connectors are given in the table below:
Fieldbus Connector PLC Type PLC Size
LOGIC Boolean byte
INTEGER Integer32 dword
VALUE FloatingPoint dword
Profibus Status Information
The Profibus function block in DSE 890 provides status information about the Profibus network
interface.
When online, the actual Address in use can be found by clicking the right mouse button over
the “Address:” text and selecting Get. This may be different to the Address set in the function
block configuration if the switches on the TechCard have set the Address.
The function block also provides two status outputs that can be wired to: STATUS and DATA
EX.
For example, the DATA EX output could be ANDed with the motor START causing the drive
to stop if the PLC connection is lost.
STATUS
Enumerated value: Status
0: MISSING OR FAULT
1: DISABLED
2: BAUD SEARCH
3: WAIT PARAM
4: WAIT CONFIG
5: DATA EXCHANGE
6: DATA EXCH NO WD
7: DATA EXCH ERROR
8: DATA EXCH ER NO WD
DATA EX
Logic value: True (T) indicates that the Profibus interface is in the Data
Exchange state.
The STATUS output could be used with the LOGIC::LOOKUP function block to determine a
particular state.