Leuze DDLS 170 Parts list manual

Serial Optical Data Transmission with Bus Capability
DDLS 170
Technical Description

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Table of Contents
1 General Information......................................................................................3
1.1 Explanation of symbols..............................................................................3
1.2 Important terms..........................................................................................4
1.3 Declaration of Conformity...........................................................................4
2 Safety Notices................................................................................................5
2.1 Safety standard..........................................................................................5
2.2 Intended use .............................................................................................5
2.3 Working safely............................................................................................6
2.4 Organizational measures...........................................................................6
3 Description.....................................................................................................7
3.1 About the data transmission units of the DDLS 170 series........................7
3.2 Characteristics of the DDLS 170................................................................7
3.3 Benefits......................................................................................................8
3.4 Construction...............................................................................................9
3.5 Interface characteristics ..........................................................................10
3.6 Function ...................................................................................................11
3.7 Application examples...............................................................................13
3.7.1 Examples of use (in principle).............................................................13
3.7.2 INTERBUS..........................................................................................15
3.7.3 RS422 Point-to-point connection .......................................................16
3.7.4 Profibus, MPI, FMS, DP, mixed operation (FMS/DP).........................17
3.7.5 Suconet K ...........................................................................................20
3.7.6 Connection variants for Profibus (MPI, FMS, DP) and Suconet K......21
4 Specifications..............................................................................................22
4.1 General specifications..............................................................................22
4.2 Dimensioned drawing...............................................................................23
5 Accessories / Order Designations.............................................................24
5.1 Individual components .............................................................................25
5.2 Recommended cable...............................................................................26
6 Installation ...................................................................................................27
6.1 Storing, transporting.................................................................................27
6.2 Mounting and aligning..............................................................................28
6.2.1 Preparation .........................................................................................28
6.2.2 Installation...........................................................................................29
6.2.3 Alignment............................................................................................30
6.3 Connection information............................................................................32
6.4 INTERBUS connection.............................................................................33

6.4.1 Shielding..............................................................................................33
6.4.2 Terminal configuration for INTERBUS, RS422 - connection
terminals..............................................................................................34
6.4.3 Connection examples..........................................................................35
6.5 Profibus, Suconet K connection...............................................................36
6.5.1 Terminal configuration for Profibus- (MPI, FMS, DP, FMS/DP),
RS485- and Suconet K - connection terminals ..................................36
6.5.2 Connection examples..........................................................................37
7 Commissioning............................................................................................39
7.1 Steps before the first commissioning .......................................................39
7.1.1 Switching on the operating voltage .....................................................39
7.1.2 Alignment ............................................................................................39
7.2 Settings on the INTERBUS interface module...........................................39
7.3 Settings on the Profibus-, RS485- and Suconet K-interface module .......40
7.3.1 Setting the transmission rate (switch 1) ..............................................40
7.3.2 Bus interruption (switch 1)...................................................................41
7.3.3 Termination (switch 2).........................................................................41
8 Error Diagnosis / Failures and Troubleshooting......................................42
8.1 Errors during commissioning....................................................................42
8.2 Other errors..............................................................................................44
9 Maintenance.................................................................................................45
9.1 General maintenance information ............................................................45
9.2 Repair, Maintenance ................................................................................45
Appendix (applies only to DDLS 170.1 and DDLS 170.2)
A Construction ................................................................................................48
B Specifications..............................................................................................50
B.1 General specifications..............................................................................50
B.2 Dimensioned drawing...............................................................................51
B.3 Terminal configuration of interfaces .........................................................52
B.3.1 INTERBUS terminal configuration.......................................................52
B.3.2 Profibus terminal configuration............................................................52
C Examples of connection .............................................................................53
C.1 DDLS 170 – INTERBUS connection........................................................53
C.2 RS422 point-to-point connection..............................................................54
C.3 DDLS 170 – Profibus connection.............................................................54
D Installation and Commissioning ................................................................55
D.1 Preparation...............................................................................................55
D.2 Installing the interface modules................................................................56
D.3 Installation ................................................................................................57
D.4 Commissioning.........................................................................................58
E Accessories / Order Designation...............................................................59

1 General Information
About this document
The DDLS 170 data transmission system available up to now has been further de-
veloped. This technical description covers the new, as well as the old, data trans-
mission system.
·
The further-developed DDLS 170 is documented in Chapters 2 - 9.
Designation: DDLS 170/xxx.1-xxxx or DDLS 170/xxx.2-xxxx
(x = place holder for defined order designation, such as range and bus system;
further details can be found in Chapter 5 "Accessories / Order Designations").
·
Device-specific details pertaining to the previous data transmission system can
be found in the Appendix (Chapters A - E).
Designation: DDLS 170.1, or DDLS 170.2
1.1 Explanation of symbols
The following is an explanation to symbols used in this
technical description:
Attention !
This symbol appears in front of text which must be observed without fail.
Failure to observe the provided instructions could lead to personal injury or dama-
ge to equipment.
Notice:
This symbol indicates text which contains important information.
☞This symbol refers you to other chapters or other literature.
➜This symbol indicates activities which are to be carried out.
Italics To help you find information quickly, important terms and key words are listed in
the left-hand column in italics.
Leuze electronic DDLS 170 3

1.2 Important terms
DDLS 170 Type designation for the optical data transmission system from Leuze electronic,
consisting of two synchronized data transmission units.
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
Type designation of the further-developed data transmission units. One data trans-
mission system consists of two DDLSs.
DDLS 170.1
DDLS 170.2
Type designation of the data transmission units available up to now. One data
transmission system consists of two DDLSs.
FSK modulation Modulation by means of frequency shift keying.
FSK frequencies Frequencies at which data are transmitted between DDLS units. The
DDLS 170/xxx.1-xxxx (DDLS 170.1) and DDLS 170/xxx.2-xxxx (DDLS 170.2) each
have their own assigned frequency pairs.
Full duplex Simultaneous transmission and reception of data.
Half-duplex operation Data are alternately transmitted and received only.
Transparent The data transmission units function as passive transmission members in a bus sy-
stem. The telegram structure is transmitted optically without being altered. The
transmitted data information are not subjected to interference.
Remote multifunction
display
Two highly visible LEDs for displaying reception level during coarse adjustment.
Bar graph Close-up multifunction display for displaying reception level during fine adjustment.
INTERBUS Bus system according to DIN 19258.
Profibus Bus system according to DIN 19245.
Suconet K Transmission system produced by Klöckner Möller
1.3 Declaration of Conformity
The DDLS 170 data transmission system was designed and manufactured in ac-
cordance with applicable European normatives and guidelines.
Notice:
A corresponding Declaration of Conformity can be requested from the manufactu-
rer.
The manufacturer of the product, Leuze electronic GmbH + Co. in D-73277
Owen/Teck, maintains a certified quality management system in accordance with
ISO 9001.
4 DDLS 170 Leuze electronic

2 Safety Notices
2.1 Safety standard
The DDLS optical data transmission system has been developed, tested and produ-
ced in compliance with applicable safety standards. It corresponds to the state of
the art.
2.2 Intended use
Attention !
The protection of personnel and the device cannot be guaranteed if the device is
operated in a manner not corresponding to its intended use.
Optical data transmission systems of the type DDLS 170 are designed for the opti-
cal transmission of data in the infrared range.
The data transmission units
·
may not be used in areas where interruption of data transmission, e.g. as a re-
sult of blocked transmitter or receiver lens, could lead to damage or injury
·
may not be operated in rooms with explosive atmospheres
·
may not be used for medical purposes
Fields of application The DDLS 170 optical data transmission system is designed, in particular, for the
following applications:
·
transmission of data output using the INTERBUS, Profibus and Suconet K field
bus protocols
·
use in automated high-bay warehouses
·
anywhere where data transmission to and from fixed or moving objects and over
large distances (up to 200 m) is required
Leuze electronic DDLS 170 5

2.3 Working safely
Attention !
Entering or making changes to the device, except where expressly described in
this operating manual, is not permitted.
Optics
Regularly clean transmission and reception windows on the DDLS 170.
Observe Chapter 9, "Maintenance".
Alignment Use the bar graph regularly to check the alignment of the DDLS 170
(see Chapter 6.2.3 "Alignment").
2.4 Organizational measures
Documentation Observe all instructions in this "Technical Description" without fail, particularly the
section entitled "Safety remarks".
Carefully store this operating manual. It should be accessible at all times.
Safety regulations Observe the locally applicable legal regulations and the rules of the employer’s lia-
bility insurance association.
Qualified personnel Mounting, commissioning and maintenance of the device may only be carried out
by qualified personnel.
Electrical work must be carried out by a certified electrician.
Repair Maintenance work must only be carried out by the manufacturer or by a service
center authorized by the manufacturer.
6 DDLS 170 Leuze electronic

3 Description
3.1 About the data transmission units of the DDLS 170 series
Where data have to be transmitted to and from moving objects, optical data trans-
mission systems provide an ideal solution.
With the DDLS 170 series, Leuze electronic offers a range of efficient optical data
transmission units. The data transmission units are robust and are not subject to
wear.
Notice:
The DDLS data transmission system consists of two devices, each of which has a
transmitter and a receiver:
e.g. DDLS 170/120. -1110 and DDLS 170/120. -1110
3.2 Characteristics of the DDLS 170
The widespread use of bus systems in nearly all branches of industry requires data
transmission systems with high demands on:
·
transmission security
·
flexibility
·
operation
The DDLS 170 data transmission unit from Leuze electronic is a high-performance
transmission system. It enables transmission of the following bus protocols without
any physical contact:
·
INTERBUS
·
Profibus / MPI / SINEC L2 - FMS / SINEC L2 - DP / mixed operation FMS - DP
·
Suconet K (Klöckner Möller)
·
RS422 - systems up to 500 kbit/s
·
RS485 - systems up to 500 kbit/s (on request)
12
Leuze electronic DDLS 170 7

3.3 Benefits
The DDLS 170 is characterized by the following features:
·
The DDLS 170 can be operated at temperatures as low as - 30°C.
·
Interference-free data exchange in full-duplex operation, transmission rate up to
500 kbit/s at a max. range of 120 / 200 m and large functional reserves.
·
High interference immunity through special constructions such as galvanically se-
parated interfaces and FSK modulation.
·
Fast and simple alignment by means of integrated remote multifunction display
and bar graph. The angles can be set independently of one another thanks to
the physical construction of the adjusting bracket.
·
All installation work can be carried out from the front. The DDLS 170 system can
be completely disassembled without removing the connection plate.
Switching off transmitter and receiver
·
Both the transmitter and the receiver can be switched off separately.
Example: Changing aisles of high-bay storage and retrieval units. By switching
off the transmitter and receiver during travel through curves, other optical sy-
stems are not influenced and faulty data transmission does not occur as the re-
sult of signals detected by the receiver which have been emitted by other optical
sensors.
For Profibus only Signal regeneration
·
Several optical data transmission paths can be connected in series (see Chapter
3.7.4).
·
Trouble-free data transmission with Profibus FMS-Systems in Multi-Master confi-
guration (indirect series connection, see Chapter 3.7.4).
·
Repeater function; signal regeneration increases the possible line lengths and
the number of nodes in the system.
For Profibus only Selector switch during loss of visual contact
·
Shorter bus access times for Profibus systems in Multi-Master configuration on
renewed visual contact (see Chapter 3.7.4).
·
If the signal received by the data transmission unit receiver is inadequate, the
transmitted and received data are switched off.
In this way, undefined bus conditions occurring as the result of one-sided system
accesses are prevented.
8 DDLS 170 Leuze electronic

3.4 Construction
The DDLS 170 series data transmission units are durable, user-friendly and
easy to service. A data path consists of two synchronized data transmission
units:
e.g. DDLS 170/120. -1110 and DDLS 170/120. -1110
The data transmission unit consists of the following components:
1 Adjusting screws (2)
2 INTERBUS, Profibus (Suconet K) interface module
3 Bi-directional transmitter
4 Fastening screws (2)
5 Remote multifunction LED display: multifunction display, red, red blinking
6 Remote multifunction LED display: multifunction display, yellow
7 Receiver
8 Close-up multifunction display; bar graph for reception level (10 LEDs)
9 Interface monitor; LED red - transmit data
10 Interface monitor; LED green - receive data
11 Terminal strip
Fig. 1: DDLS 170 components
12
Leuze electronic DDLS 170 9

3.5 Interface characteristics
INTERBUS interface
The INTERBUS interface physically corresponds to an RS422 interface. It is char-
acterized by the following features:
Protocol ·
Transmission of the INTERBUS protocol
Transmission rates ·
Transmission rates: 500 kbit/s with INTERBUS and
0 to 500 kbit/s with RS422 - systems
Cable connection ·
4-wire
Range of operation ·
Can be used for:
- bus operation (INTERBUS)
- point-to-point connection (RS422)
·
See also Chapters 3.7.2 and 3.7.3
Profibus interface
The Profibus interface (e.g. SINEC L2) physically corresponds to an RS485 interfa-
ce. It is characterized by the following features:
Protocol ·
Transmission of the following Profibus protocols is possible:
- MPI Multi Point Interface (187.5 kbit/s)
- FMS Field Message System
- DP Decentralized periphery
- FMS/DP Mixed operation
Transmission rates ·
Can be set to all common transmission rates:
in kbit/s
- 9.60
- 19.20
- 38.40
- 57.60
- 93.75
- 187.50
- 375.00
- 500.00
Cable connection ·
2-wire
·
Terminator can be activated with slide switch
Range of operation ·
See Chapter 3.7.4
Suconet K interface
Protocol ·
Transmission of the Suconet K, K1 and K2 protocols
Transmission rates ·
Transmission rate of 187.5 kbit/s with Suconet K, K1 and K2
Transmission rate of 375 kbit/s with Suconet K
Cable connection ·
2-wire
·
Terminator can be activated with slide switch
Range of operation ·
See Chapter 3.7.5
10 DDLS 170 Leuze electronic

3.6 Function
Transmit / Receive The transmitter transforms the electric signals into light signals by means of an IR-
LED. The receiver transforms the light signals back into electric signals by means
of a photodiode.
Carrier frequency To ensure that there is no mutual interaction during data transmission in full-duplex
operation, two different pairs of frequencies are used. These are identified by type
designations ... .1 ... and ... .2 ... .
Fig. 2: Transmit - receive principle
FSK modulation Each device transmits its signal by means of frequency shift keying (FSK modula-
tion). Information is bit-encoded in two frequencies.
Fig. 3: FSK modulation
The receiver filters the frequencies from the received signal and transforms them
back into bit sequence. Bit errors in the transmission, caused for example by light
flashes from fluorescent tubes, are filtered out in this way.
Transmission quality The level of the received signals can be checked on both devices.
·
Remote multifunction LED:
Multifunction display (red, red blinking or yellow) for coarse tuning.
·
Close-up multifunction display:
Bar graph for reception level (10 LEDs) for fine-tuning.
·
For PLC:
Data transmission good - terminal 9
Data transmission critical - terminal 8
Monitoring To monitor the aligned DDLS 170 or for contamination checks, connect both output
terminal 9 and terminal 8 to a PLC program.
DDLS 170/xxx.2-xxxx
DDLS 170/xxx.1-xxxx
"0" "1"
Leuze electronic DDLS 170 11

Remote multifunction LED / bar graph
Data transmission LED
(red) LED (yellow) Bar graph (LED bar)
none (no optical connection) off off 0 - 1 (red)
none (optical connection) blinking off 2 - 4 (red)
critical on off 5 + 6 (green)
good
(with sufficient functional reserve) off on 7 - 10 (green)
Fig. 4: Display of reception quality
Transmit / Receive By means of an LED, each DDLS 170 indicates whether it is transmitting and/or re-
ceiving data at the moment:
LED (1) red - Transmit data
LED (2) green - Receive data
LED (1) and (2) simultaneously - Data are being transmitted and received
Fig. 5: Transmit / receive indicator
LED (red)
LED (yellow)
Terminal 9 with functional reserve
Terminal 8 without functional reserve
1
2
3
4
5
6
7
8
9
10
Bar graph
12 DDLS 170 Leuze electronic

3.7 Application examples
Area of application Die DDLS 170 optical data transmission units are used wherever transmission devi-
ces using different systems are more elaborate, complicated, susceptible to interfe-
rence, and expensive to operate and maintain.
Optical data transmission units replace e.g.:
·
Collector wires
·
Trailing cables
·
Radio connections
When used in mobile applications, the travel speed and acceleration do not influen-
ce the transmission quality of the data.
In the application of optical data transmission, a distinction is made between
·
Coupling to bus systems
·
Point-to-point connections
3.7.1 Examples of use (in principle)
One data path - horizontal
For example, for controlling transport trucks
Fig. 6: Transport truck
Two data paths - horizontal
Fig. 7: Two transport trucks running run after the other
When arranging several transmission paths one after the other, the transmission
frequencies must be alternated in order to prevent mutual interference (see Fig. 7).
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
Leuze electronic DDLS 170 13

One data path - vertical
Fig. 8: High-bay warehouse - one data path
Two data paths - vertical and horizontal
For example, data transmission in a high-bay warehouse with several moving axes
and several data transmission paths is possible:
horizontal (movement in the aisle) and vertical (raising/lowing).
Fig. 9: High-bay warehouse - two data paths
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
Bus
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
14 DDLS 170 Leuze electronic

3.7.2 INTERBUS
All bus elements that meet the INTERBUS standard can be connected:
·
Order designation: DDLS 170/120.1-2110 and DDLS 170/120.2-2110 (120 m)
DDLS 170/200.1-2110 and DDLS 170/200.2-2110 (200 m)
·
Interface: INTERBUS interface IM170-2000 (built into unit)
·
Transmission rate: 500 kbit/s
·
Full-duplex operation: transmit and receive data simultaneously
Examples:
·
Transmission of control parameters, desired / actual values from the master to
the node and vice versa
·
Vehicle control in a stationary switch cabinet. Communication with DRIVECOM
and ENCOM components via DDLS 170
Fig. 10: DDLS in INTERBUS
Connection
assemblies
for PLC or
computer
Bus terminals
in remote bus
I/O modules
Compatible
devices from
other
manufacturers
I/O modules
1
2
1 DDLS 170 in remote bus
2 DDLS 170 in installation remote bus
Leuze electronic DDLS 170 15

3.7.3 RS422 Point-to-point connection
RS422 4-wire connection
·
Order designation: DDLS 170/120.1-2110 and DDLS 170/120.2-2110 (120 m)
DDLS 170/200.1-2110 and DDLS 170/200.2-2110 (200 m)
·
Interface: RS422 interface IM170-2000 (built into unit)
·
Transmission rate: infinitely variable up to max. 500 kbit/s, no adjustment necess.
·
Full-duplex operation: transmit and receive data simultaneously
Example of use
·
Use on transport vehicles/sidetracking skates
e.g. control of trucks and cranes
Fig. 11: Truck
Additional possibilities
·
e.g. transmission of scale data to a printer or display, on-line connection be-
tween operating data acquisition and computer
Fig. 12: Mobile crane system
DDLS 170/xxx.1-2110DDLS 170/xxx.2-2110
RS422 RS422
Max. 400 m
DDLS 170
RS422
RS422
16 DDLS 170 Leuze electronic

3.7.4 Profibus, MPI, FMS, DP, mixed operation (FMS/DP)
·
Order designation: DDLS 170/120.1-1110 and DDLS 170/120.2-1110 (120 m)
DDLS 170/200.1-1110 and DDLS 170/200.2-1110 (200 m)
·
Interface: Profibus interface IM170-1000 (built into unit)
·
Transmission rate: 9.6 kbit/s, 19.2 kbit/s, 38.4 kbit/s, 57.6 kbit/s, 93.75 kbit/s,
187.5 kbit/s, 375 kbit/s, 500 kbit/s (adjustable)
·
Semi-duplex oper.: only serial transmission and reception of data possible
A high-performance, optical data transmission system is available with the
DDLS 170 with which the following Profibus protocols can be transmitted:
·
MPI Multi Point Interface (187.5 kbit/s)
·
FMS Field Message System (in accord. with DIN 19245 Parts 1,2)
·
DP Decentralized periphery (in accord. with DIN 19245 Part 3)
·
FMS/DP Mixed operation (in accordance with DIN 19245)
Performance features
·
All masters and/or slaves that meet the Profibus standard can be connected.
·
If the signal received by the data transmission unit receiver is inadequate, the
transmitted and received data are switched off.
In this way, undefined bus conditions occurring as the result of one-sided system
accesses are prevented.
Signal regeneration
Fig. 13: Direct series connection
Leuze electronic DDLS 170 17

·
Repeater function; signal regeneration increases the possible line lengths and
number of nodes in the system.
·
Several optical data transmission paths can be connected in series. In this way it
is, for example, possible to transmit data between several high-bay storage and
retrieval units in one storage aisle (see Fig. 13).
·
Trouble-free data transmission with Profibus FMS systems in Multi-Master confi-
guration. In this way it is, for example, possible to establish direct data communi-
cation between several high-bay storage and retrieval units located in different
storage aisles (indirect series connection, see Fig. 14).
Fig. 14: Indirect series connection
Selector switch during loss of visual contact
Located on the Profibus module next to the DIP switches for baud rate adjustment
(1, 2 and 3) is an additional DIP switch (4) which controls the behavior of the data
transmission units in the event of loss of visual contact (see Chapter 7.3 "Settings
on the Profibus interface module").
If DIP-switch 4 (switch position = 1) is activated and visual contact is lost, it can, for
example on high-bay storage and retrieval units, prevent the formation of a token
on the vehicle.
Compared with the standard setting (switch position = 0), this has the advantage
that, upon re-establishment of visual contact, the system is again stable within a
few milliseconds (see Fig. 15, next page).
18 DDLS 170 Leuze electronic