Murrelektronik MASI20 Series User manual

Handbuch
Manual
Manuel
MASI20

AS-i
Instruction Manual
for Devices of the
MASI20
series
Art.-No. 55 685 MASI20 DI4 DO4R
Art.-No. 55 686 MASI20 DI4 DO4
Art.-No. 55 687 MASI20 DI4 DO3 AB
Art.-No. 55 688 MASI20 DI4 AB
Art.-No. 55 768 MASI20 DI4 DO3R AB
Instruction manual Art. No. 55 769 Version 1.0

Instruction manual for devices of the MASI20 series
Table of contents
1SAFETY INFORMATION..........................................................................................2
1.1 Designated use.................................................................................................................................2
1.2 Target groups ...................................................................................................................................2
1.3 Regulations.......................................................................................................................................3
1.3.1 EC directives...............................................................................................................................3
1.3.2 Electrical safety...........................................................................................................................3
1.3.3 General information.....................................................................................................................3
1.4 Information regarding standards....................................................................................................4
1.4.1 Equipment standards ..................................................................................................................4
1.4.2 EMC standards............................................................................................................................4
1.4.3 Safety standards .........................................................................................................................4
1.5 Explanation of symbols...................................................................................................................5
1.6 Use of attention signs......................................................................................................................5
1.6.1 Use of danger signs ....................................................................................................................5
1.6.2 Use of numbering in illustrations.................................................................................................5
1.6.3 Use of handling instructions........................................................................................................5
1.6.4 Use of foot notes.........................................................................................................................5
2SYSTEM DESCRIPTION..........................................................................................6
2.1 AS-i system.......................................................................................................................................6
2.2 System data ......................................................................................................................................8
2.3 Information for the beginner ...........................................................................................................9
2.4 Electrical specification ..................................................................................................................10
2.4.1 System cables...........................................................................................................................10
2.4.2 System power supply................................................................................................................11
2.4.3 Voltage drop..............................................................................................................................12
2.4.4 Cable cross-sections.................................................................................................................12
2.4.5 Auxiliary power supply ..............................................................................................................13
2.5 Slave profile....................................................................................................................................13
3INSTALLATION INFORMATION............................................................................14
3.1 Dimensions .....................................................................................................................................14
3.2 Mounting .........................................................................................................................................14
3.3 Unmounting ....................................................................................................................................16
3.4 Wiring (bus and supply cables) ....................................................................................................17
3.4.1 Field bus....................................................................................................................................17
3.4.2 Power supply.............................................................................................................................17
3.4.3 Wiring system............................................................................................................................18
3.4.3.1 Stripping connectors..........................................................................................................18
3.4.3.2 Screw connectors ..............................................................................................................18
3.5 Sensor and transmitter connection..............................................................................................19
3.5.1 Spring connector.......................................................................................................................19
3.5.2 Screw connectors......................................................................................................................20
3.5.3 Protection inversion of connector..............................................................................................20
3.5.4 Connecting 2-wires sensor........................................................................................................21
3.5.5 Connecting 3-wires sensor (PNP).............................................................................................21

Instruction manual for devices of the MASI20 series
3.6 Actuator connection (loads) .........................................................................................................22
3.6.1 Protection inversion of connector .............................................................................................22
3.6.2 Wiring a load on a static transistor output ................................................................................23
3.6.3 Wiring a load on a relays output...............................................................................................23
4SYSTEM CONFIGURATION...................................................................................24
4.1 Addressing .....................................................................................................................................24
4.1.1 Addressing device connection..................................................................................................25
4.2 System configuration ....................................................................................................................25
4.2.1Configuration with an AS-Interface addressing device.............................................................26
4.2.2 Configuration via the AS-Interface master................................................................................26
4.3 Automatic configuration ...............................................................................................................26
5DIAGNOSTIC INFORMATION DISPLAYS.............................................................27
5.1 Bus / Device status display...........................................................................................................28
5.2 I/O status display ...........................................................................................................................28
5.3 Auxiliary supply .............................................................................................................................28
6OVERLOAD / SHORT-CIRCUIT RESPONSE ........................................................29
6.1 Sensor / transmitter supply ..........................................................................................................29
6.2 Auxiliary supply .............................................................................................................................29
6.3 Outputs ...........................................................................................................................................30

Instruction manual for devices of the MASI20 series
Additions / corrections to the manual
Version Chapter Additions / corrections Date/Name
0.1 Issued by 15.06.04 / ERW
0.2 MASI40 => MASI20 27.07.04 / ERW
1.0 Correction 11.08.04 / DK
Notes :

Instruction manual for devices of the MASI20 series
V 1.0 1
Concerning this manual :
The text, illustrations, diagrams and examples used in this manual serve solely for the purpose of
explanation, operation and application of Input/Output modules of the MASI20 range.
Chapter overview :
The "Safety Information" section must be read without fail prior to working with the products and the
system. This section contains information required for safe installation and handling.
The "Configuration Information" section directs itself to system planners. It offers important information
and details relevant to successful configuration.
The "Installation" section provides details regarding installation, in both mechanical and electrical context.
This chapter addresses itself in particular to qualified and trained electricians responsible for the
assembly and installation of system components.
The "Setup" and "Diagnosis" sections are intended for the setup personnel. They offer important notes
and information with regard to the rapid and uncomplicated setup of modular modules and of the whole
system.

Instruction manual for devices of the MASI20 series
2V 1.0
1Safety information
1.1 Designated use
The input and output modules of the MASI20 series are designated for use only in those areas as
described in this manual.
Strict adherence to the data specified in this manual must be ensured. The products avec been
developed, manufactured, tested and documented in compliance with current safety codes.
The equipment poses no danger to operating personnel or material if configuration, assembly and
operation are performed in compliance with the stated handling and safety regulations.
Unqualified intervention in the hardware and software of our equipment, disregard of warning labels found
on the equipment or non-observance of the information in this product manual can result in injury or
serious damage to man and/or material.
Only supplementary or extension devices that have been recommended by Murrelektronik may be
employed in conjunction with products of the MASI20 series.
Any application or usage beyond and above this shall be regarded as non-designated.
1.2 Target groups
This manual addresses itself exclusively to qualified and trained electricians knowledgeable in the safety
standards of automation technology.
Only a qualified, trained electrical tradesman knowledgeable in the safety standards of automation
technology may perform configuration, installation, set-up, maintenance and testing of the equipment.
Only Murrelektronik technical personnel are allowed to undertake intervention in the hardware and
software of our equipment, insomuch as this is not described in this manual.

Instruction manual for devices of the MASI20 series
V 1.0 3
1.3 Regulations
Current safety and accident prevention laws valid for a specific application must be observed in the
configuration, installation, setup, maintenance and testing of the equipment.
1.3.1 EC directives
This equipment fulfils the requirements of EC directive 89/336/EWG
„ Electromagnetic compatibility“.
There are no restrictions to applications in residential, business and industrial areas, including industrial
facilities large and small.
1.3.2 Electrical safety
All devices connected to this equipment must fulfil PELV directives (Protected Extra Low Voltage)
according to HD 384.4.41.
1.3.3 General information
a) The designated function of this equipment is guaranteed only if the conditions for installation,
system extension, operation and maintenance are complied with.
b) Only system extensions and cables are allowed which meet the requirements and regulations for
safety, electromagnetic compatibility and, where applicable, telecommunications transmission
equipment and specifications.
The installation of other extensions may violate these requirements and regulations or damage the
equipment.
Information concerning the type of system expansions and cables that are permitted, can be
obtained either from your Murrelektronik distributor or taken from this manual.
c) The designated operation of the equipment is guaranteed only with the housing fully installed.
d) This product is designed and manufactured to assure protection against damage if designated
usage and proper maintenance are observed.

Instruction manual for devices of the MASI20 series
4V 1.0
1.4 Information regarding standards
1.4.1 Equipment standards
-EN 50295 Low voltage switching devices –Control systems and device interfaces –Actuator
Sensor Interface (AS-i).
-EN 60 947-1Low voltage switching devices
Part 1: General conventions.
1.4.2 EMC standards
-EN 50295 Low voltage switching devices –Control systems and device interfaces –Actuator
Sensor interface (AS-i).
-EN 55011 Industrial, Scientific and Medical high frequency equipment –Radio interference –
Limit values and sensing methods.
-EN 61000-4-2 EMC Part 4 : Testing and sensing methods
Main section 2 :
-Test of immunity to static electrical discharge according to basic EMC standards.
-EN 61000-4-3EMC Part 4 : Testing and sensing methods
Main section 3 :
-Test of immunity to RF electromagnetic fields.
-EN 61000-4-4 EMC Part 4 : Testing and sensing methods
Main section 4 :
-Test of immunity to rapid transient disturbances/burst –EMC basic standards.
-EN 61000-4-6 EMC Part 4 : Testing and sensing methods
Main section 6 :
-Test of immunity to asymmetric RF input
-EMC basic standard.
-AS-i Complete Specification Version 2.1, Section 8 EMC.
1.4.3 Safety standards
-EN 60 295 Low voltage switching devices –Control systems and device interfaces –Actuator
Sensor interface (AS-i).
-EN 60 947-1Low voltage switching devices
Part 1: General conventions.
-EN 60 529 Type of housing protection (IP-Code)
-VDE 0100 Part 410/HD 384.4.41 Installation of power systems and equipment with nominal voltages
up to 1 000V
Part 4 : Protective measures.
-Chapter 41 : Protection against electrocution.

Instruction manual for devices of the MASI20 series
V 1.0 5
1.5 Explanation of symbols
1.6 Use of attention signs
Notes containing important information are specially marked. These are illustraded as follows :
Attention text ........
1.6.1 Use of danger signs
Danger signs are additionally marked with an enclosing frame.
CAUTION :
Disregard of safety measures may result in damage to equimement and other serious
consequences.
DANGER :
Non-compliance with the relevant safety measures poses a danger to the health
and life of the user.
1.6.2 Use of numbering in illustrations
Illustrations are numbered with white numbers in black, round fields.
Example : ‹Text 1......
ŒText 2......
•Text 3......
The explanatory text follows in tabular form under the same number, in direct context to the preceding
illustration.
1.6.3 Use of handling instructions
Handling instructions describe the sequence of steps during installation, setup, operation and
maintenance that must be strictly observed.
The numbering (black numerals in round white fields) is given in a sequential and ascending order.
Example : •Instruction 1........
‚Instruction 2........
ƒInstruction 3........
1.6.4 Use of foot notes
Supplementary information is marked with superscripted numerals (example. : Text Text 1) Text Text).
These are explained in the form of footnotes beneath tables or text at the end of the page.

Instruction manual for devices of the MASI20 series
6V 1.0
2System description
2.1 AS-i system
The AS-Interface is a simple and cost-saving wiring system based on a 2-wire cable for data and power
transmission to sensors over a distance of up to 100 m. System expansion > 100 m is possible with the
use of repeaters.
The application area concentrates mainly on lower level industrial automation for networking simple and
mostly binary sensors and actuators.
The AS-Interface is a substitute for traditional wiring between sensors, actuators and the PLC. System-
based mechanisms effectively support setup, operation and maintenance.
Every AS-Interface system requires a control unit, the master. This is available as a PLC specific module,
a PC card or a gateway. The application program on the control system or PC controls the decentralized
I/O groups (slaves) via the master. The master performs cyclical information exchange between the
master and the slaves independently. According to standard specifications, an AS-Interface network
supports the operation of maximum 31 slaves. According to extended specifications, it supports the
operation of maximum 62 modules.
There are two types of slaves : active and passive modules.
Active modules are slaves with interfaces linking to common binary sensors and actuators. Each data
transmission cycle between the master and the slave is limited to 4 input data bits and 4 output data bits.
This kind of structure and the length of the data messages support the operation of up to 124 inputs and
124 outputs (standard specifications).
The extended specification supports the operation of 248 inputs and 186 outputs.
Passive modules are typically fitted with a standard electromechanical interface (for ex. round plug
connector M12) for a direct connection of sensors and actuators to the AS-Interface integrated into the
field bus cable.
In order to ensure an accurate data transmission between the master and the slaves, each slave -A or B
-must be assigned to a specific address configurable from 1 to 31.
Addressing can either be performed by a manual addressing device or by the master itself.
AS-Interface products are generally marked by specific logos. Such identifications allow to distinguish
between certified products and such products that are AS-Interface certified by the manufacturer.
Fig. 2-1: AS-Interface Fig. 2-2: Certification

Instruction manual for devices of the MASI20 series
V 1.0 7
Owing to the signal shape for the data transmission, it is not necessary to provide terminating resistors.
Thanks to the intelligent data protocol, AS-Interface systems are extremely non-sensitive to disturbance.
Consequently, you can use a non-screened bus cable.
The structure of AS-Interface systems can be compared to an ordinary electrical installation with different
network topologies : line, star or tree structure.
Fig. 2-3: Topology of the AS-Interface system
The data cycle time depends on the network topology and the entire scope of the system. For a complete
system with 31 slaves it is about 5 ms and with 62 slaves (extended specifications) about 10 ms.
Master
PLC
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Line structure
Master
PLC
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Star strucure
Master
PLC
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Tree structure

Instruction manual for devices of the MASI20 series
8V 1.0
2.2 System data
Topology Tree structure
Transfer medium Two-wire cable (non-screened) for data and power (up to 8A)
Cable length Sum of all spare lines : max. 100 m
Number of slaves Max. 31 or max. 62
Number of binary
elements (according to
the specification 2.0)
Up to 4 sensors and actuators per slave (max. 124 inputs and 124
outputs for a complete system)
Number of binary
elements (according to
the specification 2.1)
Up to 4sensors and 3 actuators per slave (max. 248 inputs and 186
outputs for a complete system)
Addresses A specific address for each slave between 1...31
or 1-31 A and 1-31 B (extended specification).
Addressing mode By means of a manual addressing device or via the master.
Messages Cyclic messages from the master to the individual slaves (master call)
with instant reply from slave (slave reply).
Bit rate 4 bits of informative data per slave and message.
Data cycle time 5 ms with 31 slaves
10 ms with 62 slaves.
Error recognition Identification of faulty messages, automatic repeat.
Master functions -System initialisation
-Automatic slave detection
-Non-cyclical parameter transmission
-Bus and slave diagnosis
-Error messages to control
-Automatic addressing when a slave is replaced.
Table 2.2–1 : AS-Interface system data

Instruction manual for devices of the MASI20 series
V 1.0 9
2.3 Information for the beginner
AS-Interface is a field bus system for industrial application whose advantages include no only its ease of
handling in planning and application but also the good overview of the total system.
To make the system even easier and safer for beginners to use, we recommend proceeding as outlined
in the checklist below:
Work phase Questions Note
Planning How many I/O's are required
in total ? This determines whether one or more AS-Interface systems will be needed for realization.
Planning How great is the system
power requirement ? Important for the selection of suitable system power supply units. Never switch AS-Interface power supply
units in parallel !
Planning How large is the total scope
of the system ? Repeaters must be used if the sum of all cable lengths exceeds 100 m.
Configuration How are the modules to be
assigned ? To avoid addressing errors, create an assignment scheme and carefully label all addressed modules
accordingly !
Installation Where will the modules be
installed ? Depends on the module enclosure type : either in a switch cabinet or terminal box. Place modules of
enclosure type IP 67 close to sensors and actuators for
the sake of greater efficiency.
Setup How will the system
configuration be executed ? In configuration mode (master operating mode) the detected slave profiles are automatically read in by the
master.
Setup Have all slaves been
detected by the master ? When all slaves have been detected, the master should be switched into protected operating mode.
This enables exhaustive diagnostics.
Setup How can a simple I/O
function test be performed ? Quick and straightforward with special, easy to use setup tools 1or via the gateway with graphics display.
Alternatively with the PLC Software Tool.
1e.g. : ASI Control Tools Article No 55717

Instruction manual for devices of the MASI20 series
10 V 1.0
2.4 Electrical specification
2.4.1 System cables
To meet individual application requirements, system wiring on the field bus side can be realized either
with round cables2or also with the yellow ribbon cable3characteristic for AS-Interface systems.
Cables are basically of the 2-wire type without PE cable. Cable screening in not necessary thanks to the
transmission technology.
Two electrical aspects are decisive in the selection of a suitable transmission cable :
a) DC resistance (line cross-section)
for reasons of auxiliary power transfer
b) Transmission characteristics
Impedance from 80 to 120 ohms for 167 kHz
Additional auxiliary power is usually required for actuators.
Cable leads
brown -Field bus system cable (ASI+)
24V DC auxiliary power (+24V DC)
blue -Field bus system cable (ASI-)
24V DC auxiliary power DC (0V)
Fig. 2-4: AS-Interface round cable according to DIN VDE 0281 Part 402
For standard profiled cables, the strand insulation is made of a rubber compound. For more critical
applications, particularly as regards chemical stability, TPE or PUR cables are available.
The main area of application is the stationary wiring of machines and installations in a rough environment.
For the transmission cable, you can also use a common 2-wire round cable without PE cable, particularly
for chained applications or wiring in switch cabinets.
2Art. No 55 747
3Art. No. 55 743

Instruction manual for devices of the MASI20 series
V 1.0 11
2.4.2 System power supply
Fig. 2-5: AS-Interface system power supply4
AS-Interface systems require a 29,5V to 31,6V DC power supply conforming to IEC directives
(PELV : Protected Extra Low Voltage).
Each AS-Interface branch requires its own power supply.
The data filter integrated into the power supply constitutes the basic difference in comparison with usual
industrial power supplies. It enables the transmission of both power and data.
4Art.-No. 85381 MCS-A 4 110-240/30
Art.-No. 85382 MCS-A 4 110-240/30 EFD (with earth fault detection)

Instruction manual for devices of the MASI20 series
12 V 1.0
2.4.3 Voltage drop
System-related limit values regarding system power supply must be strictly observed if maximum
functional safety and fault-free operation are to be ensured.
Always ensure that the system voltage, measured at the slave furthest away from
the system power supply, does not drop below 26,5V DC.
A voltage drop, dependent on the load current, results in the system cable as the sensors and actuators
are supplied centrally from the AS-Interface power supply unit.
In critical cases, optimisation can be achieved by changing the location of the
system power supply unit within the system layout and by using power supply
cables of a greater conductor cross-section (only for round cables).
AS-Interface modules with digital inputs support the direct connection of commercially available sensors.
The voltage needed to operate the sensors is supplied by a slave internal power supply taken from the
bus.
With the lowest admissible supply voltage at slave level and with regard to voltage drops in the slave,
optimal power supply of sensors is always guaranteed.
The sensor power supplies of different AS-Interface modules supplied by the bus
cable are not grounded and should in no case be coupled !
2.4.4 Cable cross-sections
The chief determining factor in selecting a suitable transmission cable in regard to energy transfer is the
DC resistance.
Initial conditions :
Ÿthe cable length is 100 m
Ÿ31 slaves are connected to the cable at regular intervals, and
Ÿthe current consumption of 65 mA is the same for all slaves (total current : 2 A).
The table below shows the resulting drop of voltage between the power supply inputs and the
connecting point of the last slave:
Cable cross-section in mm² 0,75 1,5 2,5
DC resistance in mOhm/m 52,0 26,6 16,0
Max. voltage drop in en V 5,4 2,7 1,6
Table 2.4–1 : Influence of various cross-sections

Instruction manual for devices of the MASI20 series
V 1.0 13
2.4.5 Auxiliary power supply
The power supply required for actuators is provided by an auxiliary power supply.
Information relating to voltage drops and cable cross-sections also apply to auxiliary power supply, all the
more since currents are higher.
In case of a short-circuit on the output of a slave far away from the system power
supply, some slaves may sporadically indicate an undervoltage of the auxiliary power
supply, due to a voltage drop caused by the high current in the cable.
2.5 Slave profile
Each slave is marked with a specific profile to assure unequivocal identification by the AS-Interface
master. The conditions for this are listed in the AS-Interface specifications. The profile consists of one
identification code (ID-Code), 2 extended identification codes (ID1-Code and ID2-Code) as well as the
Inputs/Outputs configuration code (IO-Code). These data determine the slave function.
The slave profile is represented as follows : S-IO.ID.ID2 (e.g. : S-7.A.0). This profile is permanently
programmed by the manufacturer and cannot be changed. The ID1-Code can be modified by the user
with the command « Write_Extended_ID-Code_1 ». By default the ID1-Code is ‘F’ for a standard slave or
‘7’ for an AB slave (ID=A).
The slave profile information (ID-, ID1-, ID2-and IO-Code) is very important for an easy replacement of
slaves in the system. It enables the master to check if the current configuration corresponds to the
reference configuration.

Instruction manual for devices of the MASI20 series
14 V 1.0
3Installation information
3.1 Dimensions
60 mm
77 mm
25
82 mm
91 mm
Fig. 3-1: Dimensions MASI20
3.2 Mounting
Modules can easily be mounted on a rail. When attaching the module, it must be assured that the snap-in
mechanism is tight fit.
1 2 3

Instruction manual for devices of the MASI20 series
V 1.0 15
Fig. 3-2: DIN-rail mounting