Manual Cube20 System

Manual Cube20 System

2.1.7 Terminal Wiring

2.2 Connection Diagram

Fig. 8: Terminal Wiring

For the exact connection diagram and settings please refer to the corresponding product manuals.

You will find an overview in the section "Manual Overview and Layout" in this ma-

nual.

3. Configuration Notes

This chapter contains a short description of the Cube20 system components and information that is important during the electromechanical planning phase.

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3.1 System Components

3.1.1 Product Designation Code

The designation format of Cube20 system components explains their function.

Examples:

Name Description

CUBE20 BN-P DIO8

I/O Channels

A

D

I

O

= Analog

= Digital

= Input

= Output

Fieldbus system

BN = Bus node

67 =

ProfiBus

E/IP =

Product family

Fig. 9: Example Designation Code

Name Description

CUBE20 DI32

I/O Channels

A

D

= Analog

= Digital

I

O

= Input

= Output

(a special function as e.g.: Interface Cube20/67

is also possible here)

Product family

Fig. 10: Example Designation Code

20

3.1.2 Bus node

The purpose of the Cube20 System is the decentralized routing of signals at the I/O level and the supply of this information over a fieldbus network (e.g. Profibus). The central unit is the bus node that connects the Cube20 I/O modules to the fieldbus.

The bus node is supplied via the "UB" terminal; the BN67 is directly supplied via the internal system connection of Cube67.

The bus node has a connection for the internal system connection that connects a maximum of 15 I/O modules or 3 I/O modules ("BN67"). The parts are linked together by plugging in the ribbon cable.

Article number

56001

Description

Cube20 BN-P DI8

Tab. 1: Bus node

For the exact connection diagram and settings please refer to the corresponding product manuals.

Exception:

"Cube20 BN67 DIO8 Art. No. 56450" which can be found as Cube67 connection in the

Cube67 manuals.

„Cube20/67-Interface Art. No. 56140“ which can be found as Cube20/67-Interface in the Cube20 product manual.

You will find an overview in the section "Manual Overview and Layout" in this ma-

nual.

21

3.1.3 I/O modules

These modules are connected to the bus node via the internal system connection.

Extension modules

Extension modules are fitted out with an extension interface for the internal system connection, i.e. the latter can be routed to the following I/O modules. Up to four I/O modules can be connected to one segment. Attention! Only 3 I/O modules can be connected to the Cube20 BN67 DIO8, Art.No. 56450,

(our Cube67 > Cube20 interface). An extension module can also be the sole or the last module of a segment.

Article number Description

56117

56121

56200

56201

Cube20 DO16 (2A)

Cube20 DI32 NPN / PNP

Cube20 AI4 U/I

Cube20 AI4 U/I

56230 Cube20 AI4 RTD

Tab. 2: Extension modules

3.1.4 Cube20/67 Interface, Art. No. 56140

The Cube20/67 interface module is a module that links the Cube20 System to the Cube67 System.

The Cube20/67 interface module is not an active module. It is not parameterized and supplies no diagnostics. The module is fieldbus-independent but must always be linked to the bus node (BN) via the internal system connection. The power LED indicates the status of the internal Cube20 system link.

The US and UA LEDs indicate the Cube67 status. Galvanically, UA and UI are at the same potential

(0V). To avoid EMC-related impacts, the bus mode GND must be linked to the bus node 0V of the

Cube20/67 interface module.

22

Article Number Description

3.1.4.1 Topology

Fig. 11: Example of a Cube20/67 interface module with 2 system topology variants

Example

VARIANT 1: Cube20 + Cube67

1 Cube20 bus node

+

4 Cube20 modules

+

1 Cube20/67 interface module

+

4 Cube67 modules

=

10 modules

VARIANT 2: Cube20 + Cube20

1 Cube20 bus node

+

4 Cube20 modules

+

1 Cube20/67 interface module

+

1 Cube20 BN67 DIO8 M12

+

2 Cube20 modules

=

9 modules

Max. length of Cube67 system cables 10 m

23

Note on system topology with a Cube20/67 interface module:

A modular Cube20/67 fieldbus station can comprise up to 16 modules (Cube20 bus node + 15

Cube20/67 modules).

The Cube20/67 interface module is counted as a module and can be included in the configuration (but need not).

The Cube20/67 interface module can only be operated on Cube20 bus nodes and may only be used once in the station setup.

Only max. 3 Cube20 modules can be connected to the Cube20 BN67 DIO8 M12 Art. No.

56450.

It is permitted to utilize the Cube20 BN67 DIO8 M12 Art. No. 56450 to connect to the

Cube20/67 interface module Art. No. 56140.

3.1.5 Accessories

3.1.5.1 Potential terminal block

Article number

56078

56079

56080

56081

56082

56109

56110

56111

Description

Potential terminal block gray / gray / brown / blue

Potential terminal block gray / gray / yellow / blue

Potential terminal block yellow / blue / yellow / blue

Potential terminal block brown / blue / brown / blue

Potential terminal block green / black / black / black / black

Potential terminal block brown / brown / blue / blue

Potential terminal block blue / blue / yellow / yellow

Potential terminal block blue / yellow / brown / blue

Tab. 3: Potential terminal block accessories

24

3.1.5.2 Label sheet

Article number Description

Tab. 4: Label sheet accessories

3.1.5.3 Coding pieces for terminals

Article number

56115

Description

Coding pieces for terminals

Tab. 5: Accessories for terminal coding pieces

3.1.5.4 Profibus connector

Article number

55585

55586

55587

55588

Description

Profibus plug with insulation displacement for rigid cables

Profibus plug with insulation displacement for rigid cables and with programming connection

Profibus plug with insulation displacement for flexible cables

Profibus plug with insulation displacement for flexible cables and with programming connection

Tab. 6: AccessoriesProfibus plug

3.1.5.5 BUS cable

Article number Description

7000-00000-8409999 Bus cable for Profibus, 100 m bundle

7000-00000-7989999 Bus cable for ProfiNet CAT5, 100 m bundle

7000-00000-7989999 Bus cable for ProfiNet CAT5, 100 m bundle

Tab. 7: BUS cable

Most cables and connectors are available in angled style.

25

3.1.5.6 Cable for Cube67 connection

Article number

Cube67 system connection

Description

Male - straight /

Female - straight green

Cable length

Tab. 8: Cube67 system connection

3.1.5.7 Cable for Cube67 connection

Article number

Cube67 system connection

Description

Male - straight with open ended wires gray

Cable length

7000-15001-4140150 1.5

Tab. 9: Cube67 system connection

We offer a wide product range of actuators / sensors. Connectors, cables, and adapters up to customized parts.

26

3.1.5.8 MICO

Article number Description

9000-41034-0100400 MICO 4.4 (4 channels)

9000-41034-0100600 MICO 4.6 (4 channels)

9000-41034-0401000 MICO 4.10 (4 channels)

9000-41042-0100400 MICO 2.4 (2 channels)

9000-41042-0100600 MICO 2.6 (2 channels)

9000-41042-0401000 MICO 2.10 (2 channels)

Tab. 10: Overview MICO variants

Nominal operating branch-circuit current (full load)

4 A each

6 A each

10 A each

4 A each

6 A each

10 A each

Information on products and accessories is available in our catalog and our online shop at: onlineshop.murrelektronik.com

27

3.2 Internal system connection

ATTENTION:

Inverting Cube20 I/O modules in a system can result in injury or serious damage to man and/or material.

Therefore it is important, that Cube67 system cables and Cube67 I/O modules are clearly labeled.

3.2.1 Topology

Fig. 12: Topology

n

Fieldbus

q

Internal system connection (integrated)

o r

Supply: module, sensor, actuator

p

Expansion module

s

I/O

The bus node has a connection for up to 15 I/O modules. It is not necessary to set the addresses of the modules. The modules are automatically addressed, according to their position.

28

3.2.2 Internal System Connection Terminations

No terminations required.

3.2.3 Maximum Expansion

3.2.3.1 Cube20 BN

Up to 15 expansion modules can be connected to a Cube20 bus node. The parts are linked together by plugging in the ribbon cable.

Fig. 13: Cube20 BN expansion

3.2.3.2 Cube20 BN67 DIO8 (Art. No. 56450)

Up to 3 expansion modules can be connected to a Cube67 to Cube20 system expansion. The parts are linked together by plugging in the ribbon cable.

Fig. 14: Cube67 to Cube20 system expansion

In addition the requirements for the maximum expansion of the Cube67 system (system connection) have to be observed. They are described in the Cube67 or Cube67+ System

Manual (art. no. 56970).

29

3.2.3.3 Cube20/67 Interface Module (Art. No. 56140)

Up to 15 modules can be connected to a Cube20 system expansion. The CUBE67 system cable is used as the electrical connection. Sensor and actuator power supply for the Cube67 modules is provided via the Cube20/67 interface.

Refer to the requirements for maximum expansion of the Cube67 System

(system link). You will find this in Cube67 or Cube67+ System Manual (Art. No.

56970).

Note the sequence:

It is not permitted to connect the Cube20/67 interface module Art. No. 56140 downstream of a Cube20 BN67 DIO8 Module Art. No. 56450.

The max. length of the Cube67 system cable is 10 m.

3.2.4 Load rating

It is not necessary to pay attention to the load of the internal system connection, because the I/O supply is connected directly to the corresponding I/O module.

30

3.3 Power Supply

3.3.1 Configuration Notes

Bus modules require a direct-voltage power supply of typically 24 VDC (SELV/PELV) which must comply with the regulations of conventional industrial power-utility companies.

In order to optimize interference immunity, we advise you to power sensors, bus, and actuators from different sources. The power supply should be primary switchedmode or regulated power supplies.

The output of the power supply units depends on the number of connected load and their output.

In any case, it must be ensured that the system voltage does not drop below 18 V DC viewed from the system power supplies and measured at the remotest slave. System response becomes unspecific if sensor and bus power supply drop below 18 V DC.

Primary switched-mode power supply units normally permit an increase in output voltage to the amount of the rated voltage in order to compensate for any power losses.

Modules with digital inputs support the direct connection of commercially available sensors. A separate power supply may be necessary for the sensors if the total power required is high due to the number of slaves or a high power draw of the sensors.

31

3.3.2 Galvanic separation

Galvanic separation between the supply of the system supply and the sensor supply has to be provided. In order to maximize the electromagnetic compatibility we recommend to ensure galvanic separation.

Fig. 15: Typical system structure with galvanic separation

The illustration above shows a typical Cube20 system structure with digital inputs and outputs (DI/DO) and analog inputs and outputs (AI/AO).

Furthermore it shows that Profibus, I/O area and I/O supply as well as the supply of the system electronics are galvanically separated. The internal electronics of the digital input/output modules are supplied by the system cable. The internal electronics of the analog input/output modules are supplied via the input/output supply voltage.

3.3.2.1 Information on the analog I/O modules.

The I/O supply voltage must always be connected, otherwise communication via the internal system connection is interrupted starting from the analog module that is not supplied.

3.3.2.2 Information on the Cube20/67 interface module (Art. Nr. 56140)

Galvanically, the supply voltages UA and UI are at the same potential (0V).

Galvanically, connected Cube67 modules are not separated from the module electronics of the

Cube20 System.

32

3.3.3 Recommended power supply units

3

3

3

1

1

Primary switched-mode power supply units from Murrelektronik are specially designed to power automation systems. For this reason, we recommend them to power the modules.

Note for DeviceNet users:

We recommend so-called Class 2 power supplies for the supply of the DeviceNet bus.

Please contact our sales support regarding information about "ODVA" certified power supplies.

Phases Output rating

240 W / 10 A

480 W / 20 A

85086

85088

Input voltage

95...132 V AC

85085

85087

Input voltage

185...265 V AC

Tab. 11: Recommended power supply units MCS Power+ single phase

Phases Output rating

240 W / 10 A

480 W / 20 A

960 W / 40 A

Input voltage

3 x 340...460 V AC

85095

85097

85099

Tab. 12: Recommended power supply units MCS Power+ three phase

Murrelektronik offers an extensive range of primary switched power supply units.

Please refer to our catalogs or: www.murrelektronik.com

33

3.3.4 Cable Cross Sections

Fig. 16: Cable cross sections

3.3.5 Electromagnetic Compatibility (EMC)

This device meets the requirements of EC Directive 89/336/EEC "Electromagnetic

Compatibility".

This device is Class A equipment and may cause radio-frequency interference in residential areas. In this case, the operator may be required to implement adequate countermeasures.

The devices described in this manual each meet the relevant standards for electromagnetic compatibility. However, this does not mean that their electromagnetic compatibility is still guaranteed when installed in a plant or machine.

For this reason, we urgently advise you to comply with the instructions on installation in accordance with EMC requirements below. Only then can you assume that the overall system complies with EMC requirements, provided CE-marked components are used exclusively.

Protection against Electrostatic Discharge

The products described in this manual contain complex semiconductor components which may be destroyed or damaged by electrostatic discharge (ESD).

Damage does not necessarily lead to immediate, detectable failure, or malfunction. These states may be even delayed, or occur sporadically.

The generally accepted safety precautions for ESD sensitive devices must be observed when handling the devices. The following precautions must be taken:

34

Never plug or unplug connectors while the equipment is under power.

If you are an operator, discharge any static charge you may be carrying just before you touch the equipment. For example, you can touch a grounded part of the machine, or wear an ESD discharge strap that is permanently connected to ground.

Grounding

A short (as short as possible), low-impedance connection between the grounding point and the reference ground is essential to divert interference voltages running between the device and reference ground.

The inductivity of standard FE conductors is a high impedance for high-frequency interference voltages. For this reason, the use of grounding straps is advisable. If this is not possible, a fine-wire FE conductor should be selected with the largest possible cross section, and the connection to ground should be kept as short as possible.

Cable Routing

You can avoid EMC problems by observing elementary basic rules of cable routing:

Route data lines as far as possible away from power lines.

Route data lines and power lines at least 10 cm apart.

Intersect data and power lines at right angles only.

Route data and power lines in separate, shielded compartments.

Remember the interference potential of other devices or lines when routing the cables.

Place frequency converters, motor lines, and other devices and lines that emit high-frequency interference at the greatest possible distance.

Voltage Drops

Short-term voltage drops (<10 ms) normally pose no operational problems as the electronics are protected by capacitors integrated in the power circuits. This does not apply to the power supply of the sensors and actuators connected to the module. Their high power requirement cannot be covered by the capacitors integrated in the device. For this reason, even transient interruptions of the actuator supply can result in undesirable switching operations.

35

Due to the integrated input filter, a change in the input signal of less than 1 ms does not cause a change of the input state signaled to the Master. Longer interruptions of the sensor supply may cause changes of the input signal.

Separate Power Supplies

Sensors or actuators can be powered by a common power supply unit. However, it is preferable to use separate power supplies in order to maximize the electromagnetic compatibility of the overall system.

Interference Suppression of Inductive Loads

The outputs of the devices described in this manual have an integrated protective circuit that provides safety against high-energy interference voltages, such as those that occur when inductive consumers are switched.

Inductive load

(e.g. solenoid valves)

Varistor or bipolar suppressor diode

Fig. 17: Interference Suppression of Inductive Loads

A suppressor diode helps to quickly reduce the energy stored in the inductive load of a magnetic field.

However, it is recommended to use commercially available protection circuits for inductive loads, especially loads in the range of the maximum current-carrying capacity of a channel at switching frequencies of > 1 Hz. These protection circuits can reduce the energy stored in the connected inductances.

The high voltages that occur when inductive loads are shut down result in strong fields in the cables with consequential faults in adjacent circuits or devices.

Murrelektronik offers a wide selection of interference suppression products for this purpose.

Please refer to our catalogs or: onlineshop.murrelektronik.com

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Other Measures and Limits

In some system configurations, the requirements for interference emission and immunity from interference can only be met with additional measures, or even not at all. In these cases, the EMC within the system is also dependent on the single components of other manufacturers.

Mains filters are a suitable means of reducing line-conducted interference. Various manufacturers offer optical-fiber converters. This data transmission technology is basically immune to EMC interferences. However, this does not apply to the electronic conversion circuits. For this reason, the use of optical fibers does not solve all EMC problems.

Our certified test center will answer your questions regarding EMC. They will give advice on guaranteeing compliance with the EMC directive for the system you produce.

Murrelektronik Test Center,

Phone ++7191 47-334,

Fax ++7191 47-323,

[email protected]

37

3.4 Connecting Sensors and Actuators

Attention:

Cube20 modules are no safety-related devices according to the relevant standards.

The Off-status of the outputs must not be used to meet safety-related requirements of the application!

3.4.1 Sensor Supply

Sensors can be supplied by the I/O module. The sensor supply of each module is secured by an electronic, self-resetting fuse. The max. current draw for the sensor supply is 0.7 A for each module.

There is no derating for the sensor supply.

WARNING!

The capacity per digital input is 10 nF.

3.4.2 Supply of external components

The actuator supply (not switchable) for the analog output modules is provided. For each UA0...UA3 terminal (brown), 1.6 A current are available.

3.4.3 Actuators

Please see the corresponding Instruction manual for the maximum current that can be taken from the outputs.

Information about derating:

AO modules do not have derating.

For DO modules, the following derating curves are applicable, if all outputs are switched at the same time.

38

Derating DO for 0.5 A

Derating DO for 2 A

Fig. 18: Derating curve of the DO modules for 0,5A

Fig. 19: Derating curve of the DO modules for 2A

ATTENTION:

The module may be damaged if the actuator power supply polarity is reversed.

To increase power, outputs may be connected in parallel.

If an overload or short-circuit occurs at an output, that output is shut down. This output will remain disabled even when the error has been corrected. In order to reset the short-circuit memory, the output must be reset or the actuator supply switched off.

39

3.5 Information about the data of the I/O modules

By means of the device identification the fieldbus master gets information about the data capacity, operation mode, etc. for peripheral modules (I/O modules). After having detected the slaves the master generates from this data a map of all detected I/O modules of the bus system. The data of the I/O modules are mapped in a list according to the logical arrangement in the fieldbus.

The user can now map the entries of the bus master list to addresses in the PLC. This will create the process image of the inputs and outputs (PII/PIO).

PLC

Process Image

Inputs

(PII)

Fieldbus Master

Periphery Image Inputs“

Input Data Node 1

Diagnosis Data Node 1

Input Data Node 2

Diagnosis Data Node 2

Input Data Node 3

Diagnosis Data Node 3

Fieldbus

I/O Modules

Master Node 1

• Input Data

• Diagnosis

• Output Data

Master Node 2

SPS program

Periphery Image “Outputs”

Output Data Node 1

Output Data Node 2

Output Data Node 3

• Input Data

• Diagnosis

• Output Data

Process Image

Outputs

(PIO)

Master Node 3

• Input Data

• Diagnosis

• Output Data

Fig. 20: Data transfer between PLC, fieldbus master and bus devices

Data transfer between PLC, fieldbus master and bus devices

For the module specific I/O data, please refer to the corresponding product manuals.

You will find an overview in the section "Manual Overview and Layout" in this ma-

nual.

40

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