Eaton EMS2-DOS-T-9-SWD User manual

Manual

EMS2-…-SWD

Electronic motor starters with SWD

10/19 MN120008EN

All brand and product names are trademarks or registered trademarks of their

respective owners.

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oder

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Call the EatonCare Support Center if you need assistance with placing an order,

stock availability or proof of shipment, expediting an existing order, emergency

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information on local distributors or sales offices.

Voice: 877-ETN-CARE (386-2273) (8:00 a.m. – 6:00 p.m. EST)

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email: [email protected]

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Original operating manual

The German-language edition of this document is the original operating manual.

Translation of the original operating manual

All editions of this document other than those in German language are translations of

the original operating manual.

1. Edition 2019, publication date 10/19

See revision protocol in the “About this manual“ chapter.

Authors: Heribert Joachim, Mustafa Akel, Sergej Güntner

Editor: René Wiegand

All rights, including those of translation, reserved.

No part of this manual may be reproduced, stored in a retrieval system, or transmit-

ted in any form or by any means, electronic, mechanical, photocopying, micro-film-

ing, recording, or otherwise, without the prior written permission of Eaton

Industries GmbH, Bonn, Germany.

Subject to alteration.

Before commencing the installation

• Disconnect the power supply of the device.

• Ensure that devices cannot be accidentally retriggered.

• Verify isolation from the supply.

• Ground and short-circuit.

• Cover or enclose neighbouring units that are live.

• Follow the engineering instructions (IL) of the device

concerned.

• Only suitably qualified personnel in accordance with

EN 50110-1/-2 (VDE 0105 Part 100) may work on this device/

system.

• Before installation and before touching the device ensure

that you are free of electrostatic charge.

• The functional earth (FE) must be connected to the

protective earth (PE) or to the potential equalizing.

The system installer is responsible for implementing this

connection.

• Connecting cables and signal lines should be installed so

that inductive or capacitive interference do not impair the

automation functions.

• Install automation devices and related operating elements

in such a way that they are well protected against uninten-

tional operation.

• Suitable safety hardware and software measures should

be implemented for the I/O connection so that a cable or

wire breakage on the signal side does not result in

undefined states in the automation device.

• Ensure a reliable electrical isolation of the low voltage for

the 24 V supply. Only use power supply units complying

with IEC 60364-4-41 or HD 384.4.41 S2 (VDE 0100 part 410).

• Deviations of the mains voltage from the nominal value

must not exceed the tolerance limits given in the technical

data, otherwise this may cause malfunction and

dangerous operation.

• Emergency-Stop devices complying with IEC/EN 60204-1

must be effective in all operating modes of the automation

devices. Unlatching the emergency switching off devices

must not cause restart.

• Built-in devices for enclosures or cabinets must only be

run and operated in an installed state, desk-top devices or

portable devices only when the housing is closed.

• Measures should be taken to ensure the proper restart of

programs interrupted after a voltage dip or failure. This

should not cause dangerous operating states even for a

short time. If necessary, emergency switching off devices

should be implemented.

• Wherever faults in the automation system may cause

damage to persons or property, external measures must

be implemented to ensure a safe operating state in the

event of a fault or malfunction (for example, by means of

separate limit switches, mechanical interlocks, etc.).

• During operation, and depending on their degree of

protection, variable frequency drives may have live,

uninsulated, moving, and/or rotating parts, as well as hot

surfaces.

• The impermissible removal of the required cover,

improper installation or incorrect operation of the motor or

variable frequency drive can cause the failure of the

device and serious injury and/or material damage.

• Comply with all applicable national accident prevention

regulations (e.g. BGV A3) when working with energized

variable frequency drives.

• The electrical installation must be carried out in

accordance with the relevant regulations (e.g. with regard

to cable cross sections, fuses, PE).

• All transport, installation, commissioning and mainte-

nance work must only be carried out by trained personnel

(observe IEC 60364, HD 384 or DIN VDE 0100 and national

accident prevention regulations).

• If applicable, systems in which variable frequency drives

are installed must be equipped with additional monitoring

and protective devices in accordance with the applicable

safety regulations, e.g., the German Equipment and

Product Safety Act, accident prevention regulations, etc.

Making changes to the variable frequency drives by using

the operating software is allowed.

• Keep all covers and doors closed during operation.

• When designing the machine, the user must incorporate

mechanisms and measures that limit the consequences of

a drive controller malfunction or failure (an increase in

motor speed or the motor?9s sudden stop) so as to prevent

hazards to people and property, e.g.:

– Additional stand-alone devices for monitoring parame-

ters that are relevant to safety (speed, travel, end

positions, etc.)

– Electrical and non-electrical safety devices (interlocks

or mechanical locks) for mechanisms that protect the

entire system

– Due to the possibility of there being capacitors that are

still holding a charge, do not touch live device parts or

terminals immediately after disconnecting the variable

frequency drives from the supply voltage. Heed the

corresponding labels on the variable frequency drives

Eaton Industries GmbH

Safety instructions

Danger!

Dangerous electrical voltage!

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 1

Content

0 About This Manual..................................................................... 3

0.1 List of revisions ............................................................................ 3

0.2 Target group................................................................................. 3

0.3 Additional documents .................................................................. 3

0.4 Abbreviations and symbols .......................................................... 4

0.4.1 Risk of material damage............................................................... 4

0.4.2 Hazard warnings of personal injury .............................................. 4

0.4.3 Tips............................................................................................... 4

1 General – EMS2-…-SWD electronic motor starter.................. 5

1.1 Standards ..................................................................................... 5

1.2 Safety directives........................................................................... 6

1.3 Device overview EMS2-…-SWD.................................................. 7

1.4 Type code..................................................................................... 8

2 Motor starter – overview........................................................... 9

2.1 Setup............................................................................................ 9

2.2 Motor starter without safety function (DO, RO) .......................... 10

2.2.1 Block diagrams............................................................................. 11

2.2.2 Terminal assignment.................................................................... 11

2.3 Motor starter with safety function (DOS, ROS) ........................... 12

2.3.1 Block diagrams............................................................................. 13

2.3.2 Safety-oriented enable ................................................................. 14

2.3.3 Terminal assignment.................................................................... 14

2.4 Mounting...................................................................................... 15

2.5 Layout of devices with I

e

= 9 A.................................................... 15

3 Communication via SmartWire-DT (SWD) .............................. 19

3.1 Commissioning EMS2-…-SWD motor starters............................ 19

3.2 Replacing EMS2-…-SWD motor starters ..................................... 19

3.3 Special considerations when using the field bus system

CANopen...................................................................................... 20

3.4 Input and output data................................................................... 21

3.4.1 Cyclicaldata .................................................................................. 21

3.4.2 Acyclicaldata................................................................................. 27

2 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

4 Short-circuit / motor protection............................................... 31

4.1 Short-circuit protection................................................................. 31

4.1.1 Use in IEC environment............................................................... 31

4.1.2 Use in UL environment................................................................ 32

4.2 Motor protection.......................................................................... 33

4.2.1 Symmetry detection .................................................................... 34

4.2.2 Motor with brake ......................................................................... 34

4.2.3 Conditions when setting the motor protection............................ 35

4.2.4 Setting of the motor protection ................................................... 36

4.2.5 Checking the set value................................................................. 37

4.2.6 Tripping and reset ........................................................................ 38

5 Application examples................................................................ 39

5.1 Application without controlled stop ............................................. 40

5.2 Single-channel controlled stop application (cat. 3, SIL 3, PL e).... 41

5.3 Dual-channel controlled stop application (cat. 3, SIL 3, PL e) ...... 42

6 Status messages........................................................................ 43

6.1 LEDs on the front of the device................................................... 44

6.2 Resetting after an error message ................................................ 48

6.2.1 Automatic reset ........................................................................... 48

6.2.2 Manual reset................................................................................ 49

7 Technical data ............................................................................ 51

8 Dimensions................................................................................. 55

9 Accessories................................................................................. 57

9.1 Three-phase current connector.................................................... 57

Index ........................................................................................... 59

0 About This Manual

0.1 List of revisions

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 3

0 About This Manual

This manual MN012008DE applies to device series EMS2-…-SWD with

SmartWire-DT (SWD) electronic motor starters.

The manual describes the different product versions of the EMS2-…-SWD

device series, their installation and operation, as well as their use to protect

motors in potentially explosive (Ex e increased safety) areas.

0.1 List of revisions

The following significant amendments have been introduced since previous

issues:

0.2 Target group

This manual is intended for qualified personnel installing, operating, and

maintaining EMS2-…-SWD electronic motor starters.

0.3 Additional documents

For further information, see the following documentation:

• Manual MN034003EN:

”Electronic motor starter EMS2”

(devices without SWD functionality)

• Instruction leaflet IL120004ZU, “EMS2 –SWD”

• Instruction lealet IL120010ZU, “EMS2 –SWD – Safety”

￫

As we do not know your application in detail, the application

information and examples provided in this document are incom-

plete and serve only to provide you guidance, as an operator of

safety-related control technology, in the implementation of

safety standards and directives. The information and examples

in this document make no claim to be complete nor are they

legally binding.

For more detailed information, refer to the prevailing standards

and directives that are applicable to your application.

Publication

date

Page Keyword new modified deleted

10/19 First edition – – –

CAUTION

Installation requires a qualified electrician

0 About This Manual

0.4 Abbreviations and symbols

4 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

0.4 Abbreviations and symbols

The following abbreviations are used in this manual:

Table 1: Abbreviationsused

The symbols used in this manual have the following meanings:

▶ indicates actions to be taken.

0.4.1 Risk of material damage

0.4.2 Hazard warnings of personal injury

0.4.3 Tips

Abbreviation Meaning

DO Direct Online

DOS Direct Online Safety

EMS Electronic Motor Starter

LED Light-Emitting Diode

RO Reverse Online

ROS Reverse Online Safety

SWD SmartWire-DT

WARNING

Warns about the possibility of material damage.



CAUTION

Warns of the possibility of hazardous situations that may possi-

bly cause slight injury.



WARNING

Warns of the possibility of hazardous situations that could result

in serious injury or even death.



DANGER

Warns of hazardous situations that result in serious injury or

death.

￫

Indicates useful tips.

1 General – EMS2-…-SWD electronic motor starter

1.1 Standards

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 5

1 General – EMS2-…-SWD electronic motor starter

1.1 Standards

In addition to the standards in accordance with EN 60079 / VDE 165-1,

separate standards for the corresponding types of protection apply to the

protection of motors in potentially explosive atmospheres.

Motors with type of protection for potentially explosive areas,

“increased safety”

The standard EN 60079-7 requires additional measures in the case of motors

with the type of protection for potentially explosive areas, “increased

safety”.

These measures ensure, with a high degree of certainty, that impermissible

high temperatures, sparks and electric arcs are prevented on motors where

these would not usually occur during normal operation.

The motor protection devices for this, which themselves are not located in a

potentially explosive area, must be certified by an accredited admission

office.

Motors in potentially explosive dust-air mixtures

For motors in potentially explosive dust-air mixtures, the standard

EN 60079-14 specifies additional measures.

Directive 2014/34/EC (ATEX) on the approximation of the laws of the

Member States concerning devices and protective systems intended for use

in potentially explosive areas has been in force since 20.04.2016.

1 General – EMS2-…-SWD electronic motor starter

1.2 Safety directives

6 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

1.2 Safety directives

1. The device executes a function diagnosis when the drive is switched on

or is in the switched on state. In addition, an authorized electrician or a

skilled worker who is well acquainted with the relevant standards can

conduct the “Motor overload protection” safety function test. For this

test, the drive must be operated withright or left rotation (forward or

reverse running), and the current flow in a conductor is interrupted

(e.g. by removing the fuse in the L1 or L3 phase). The EMS2 then

switches off the drive within 1.5 to 2 s. The LEDs for right or left rotation

go out, and the ERR-LED and the reply output are set and the confirma-

tion can be retrieved via the bus.

2. The device is an associated item of equipment.

Do not install the device in potentially explosive areas. When installing

and operating associated equipment, the applicable safety directives

must be observed.

3. When using devices with 230 V AC control, always use the same phase

for the control supply voltage and the control inputs.

4. If you use the “Automatic RESET” mode, the drive is switched on again

after the cooling time has expired - if a control signal is still present.

The cooling time is 20 minutes. For applications in the Ex-protection

area, automatic restart is not permitted.

5. For safety technical data, please refer to this document and certificates

(EC type examination certificate and other approvals if appropriate).

6. Electronic motor starters are not allowed to operate with variable

frequency drives.

7. For emergency stop applications, the machine must be prevented from

restarting automatically by a higher-level control system.

1 General – EMS2-…-SWD electronic motor starter

1.3 Device overview EMS2-…-SWD

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 7

1.3 Device overview EMS2-…-SWD

EMS2-…-SWD series electronic motor starters serve to switch and protect

three-phase asynchronous motors.

Depending on the version, the following functions are available:

• Direct starter (DO = Direct Online)

• Reversing starter (RO = Reverse Online)

• Motor protection

• Overload protection

• Phase failure

• Phase imbalance

• Category 3 controlled stop

PL e DIN EN ISO 13849, SIL 3 IEC 61508

The compact devices contain the required interlocks which are necessary for

the specified functions in order to reduce the wiring.

The supply of the device as well as the actuation of the operating direction

takes place via the internal SmartWire-DT (SWD) interface. In addition, the

motor starter uses this interface in order to provide additional information for

a superordinate controller.

Notes on the application range

￫

Do not operate single-phase motors in conjunction with an

EMS2-…-SWD electronic motor starter.

￫

It is not permitted to use the motor starters described in this

Section in potentially explosive areas (ATEX).

Only motors in Ex e increased safety areas may be controlled.

1 General – EMS2-…-SWD electronic motor starter

1.4 Type code

8 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

1.4 Type code

The type designation of an electronic motor starter EMS2 with SWD

(i. e. EMS2-…-SWD) is made up of the following type code (comprising five

groups):

E M S 2 - D O S - T - 3 - S W D Explanation

Controland supply

SWD: via SmartWire-DT

Rated operational current (AC51)

3: 3 A

9: 9 A

Terminal connection

T: Push-In

Type of electronic motor starter

DO: Direct starter (without safety function)

DOS: Direct starter with safety function

RO: Reversing starter (without safety function)

ROS: Reversing starter with safety function

Device series

Electronic motor starter EMS2 of the 2nd generation

2 Motor starter – overview

2.1 Setup

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 9

2 Motor starter – overview

EMS2-…-SWD devices are supplied via SmartWire-DT (SWD).

The cables are connected using push-in terminals.

2.1 Setup

The following drawing shows the designation for the EMS2-…-SWD

electronic motor starter.

Figure 1: Designations on EMS2-…-SWD

a EMS2-DO/RO: Terminals without function

EMS2-DOS/ROS: safety-oriented enable

b Connection for SWD external device plug

c LED PWR (green)

d LED SWD (green)

e LED ERR (red)

f LED L (yellow) – for reversing starters

g LED R (yellow) – for reversing starters; LED ON (yellow) – for direct starters

h Set/reset button

i Terminals for input voltage

j Terminals for output voltage

k Top-hat rail fitting

⑨

⑩

⑪

①

②

⑧

③

④

⑤

⑥

⑦

2 Motor starter – overview

2.2 Motor starter without safety function (DO, RO)

10 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

2.2 Motor starter without safety function (DO, RO)

The devices to actuate motors described in this Section must not be oper-

ated in potentially explosive Ex e increased safety (ATEX) areas.

Table 2: DO (direct starter) and RO (reversing starter) versions

Notes

Type Minimum

current

Rated operational current I

e

AC51

EN 60947-4-3

AC53a

EN 60947-4-2

Direct starters

EMS2-DO-T-3-SWD 0.18 A 3 A 3 A

EMS2-DO-T-9-SWD 1.5 A 9 A 7 A

Reversing starters

EMS2-RO-T-3-SWD 0.18 A 3 A 3 A

EMS2-RO-T-9-SWD 1.5 A 9 A 7 A

￫

Note, that the permissible continuous current for devices with a

rated operational current I

e

of 9 A depends on the type of

mounting and the ambient temperature, ￫ section 2.5, “Lay-

out of devices with Ie = 9 A”, page 15.

￫

Currents under the minimum current specified in table 2 will not

be detected by the motor protection. The motor must not be

operated under this value.

The motor starter itself also works if the current is under this

minimum value. This state is displayed by the flashing of both

LEDs PWR and ERR.

2 Motor starter – overview

2.2 Motor starter without safety function (DO, RO)

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 11

2.2.1 Block diagrams

Figure 2: Block diagram: Direct starter with SWD

Figure 3: Block diagram: Reversing starter with SWD

2.2.2 Terminal assignment

The following table specifies the functions of the terminals of the switching

operations shown in ￫ section 2.2.1, “Block diagrams”.

Table 3: Terminal assignment

2/

T1

4/

T2

6/

T3

M

3 ~

RESET

SWD

1/

L1

3/

L2

5/

L3

8



2/

T1

4/

T2

6/

T3

M

3 ~

RESET

SWD

1/

L1

3/

L2

5/

L3

8



Terminal Function

1L1 three-phase incoming unit

3L2 three-phase incoming unit

5L3 three-phase incoming unit

2T1 three-phase motor connection

4T2 three-phase motor connection

6T3 three-phase motor connection

SWD 7-pole SmartWire-DT external device plug

NC Not Connected

2 Motor starter – overview

2.3 Motor starter with safety function (DOS, ROS)

12 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

2.3 Motor starter with safety function (DOS, ROS)

The devices to actuate motors described in this Section must not be

operated in potentially explosive Ex e increased safety (ATEX) areas.

Table 4: DOS (direct starter) and ROS (reversing starter) versions

Notes

Type Minimum

current

Rated operational current I

e

AC51

EN 60947-4-3

AC53a

EN 60947-4-2

DOL starters

EMS2-DOS-T-3-SWD 0.18 A 3 A 3 A

EMS2-DOS-T-9-SWD 1.5 A 9 A 7 A

Reversing starters

EMS2-ROS-T-3-SWD 0.18 A 3 A 3 A

EMS2-ROS-T-9-SWD 1.5 A 9 A 7 A

￫

Note that the permissible continuous current for devices with a

rated operational current I

e

of 9 A depends on the type of

mounting and the ambient temperature, ￫ section 2.5, “Lay-

out of devices with I

e

= 9 A”, page 15.

￫

Currents under the minimum current specified in the table 4 will

not be detected by the motor protection.

It is therefore not permissible to operate the motor under this

value – especially in applications which fall under the remit of

the ATEX guideline.

The motor starter itself also works if the current is under this

minimum value. This state is displayed by the flashing of both

LEDs PWR and ERR.

2 Motor starter – overview

2.3 Motor starter with safety function (DOS, ROS)

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 13

2.3.1 Block diagrams

Figure 4: Block diagram: Direct starter with safety function and SWD

Figure 5: Block diagram: Reversing starter with safety function and SWD

Notes

￫

The block diagrams in Figure 4 and 5 serve merely to represent

the general functions. The actual wiring depends on the applica-

tion case (￫ chapter 5, “Application examples”, page 39).

￫

For a safety-oriented enable (EN) of the motor starter

EMS2-DOS-…-SWD and EMS2-ROS-…-SWD, a voltage of 24 V

is required between terminals EN+ and EN-.

This voltage can also be supplied from an external voltage

source (see example below ￫ section 2.3.2, “Safety-oriented

enable”). If there is no signal, the start commands via SWD will

not be accepted.

2/

T1

4/

T2

6/

T3

M

3 ~

-

EN

+ EN+ EN-

RESET

SWD

1/

L1

3/

L2

5/

L3

8

2/

T1

4/

T2

6/

T3

M

3 ~

-

EN

+ EN+ EN-

RESET

SWD

1/

L1

3/

L2

5/

L3

8

2 Motor starter – overview

2.3 Motor starter with safety function (DOS, ROS)

14 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

2.3.2 Safety-oriented enable

Figure 6: Safety-oriented enable (versions)

Left: with internal voltage from the EMS2-…-SWD motor starter

Middle: with external voltage

Right: via a safe PLC output

2.3.3 Terminal assignment

The following table specifies the functions of the terminals in the

￫ section 2.3.1, “Block diagrams” shown switching operations.

Table 5: Terminal assignment

+ EN+

EMS2…SWD

EN-

-

EN EN

+ EN+

EMS2…SWD

EN- -

Q

GND

24 V

+ EN+

EMS2…SWD

EN- -

Safety PLC/SPS

Terminal Function

1L1 three-phase incoming unit

3L2 three-phase incoming unit

5L3 three-phase incoming unit

2T1 three-phase motor connection

4T2

three-phase motor connection

6T3 three-phase motor connection

EN+ Input for safety-oriented enable of the motor starter

EN- Input for safety-oriented enable of the motor starter

+

Internal voltage 24 V

- Internal voltage 24 V

SWD 7-pole SmartWire-DT external device plug

2 Motor starter – overview

2.4 Mounting

EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com 15

2.4 Mounting

EMS2-…-SWD motor starters are mounted on a 35-mm-top-hat rail.

Figure 7: Mounting on top-hat rail

Notes

2.5 Layout of devices with I

e

= 9 A

When using devices with a rated operational current I

e

of 9 A, note that the

permissible thermal continuous current I

L

depends on the type of mounting

and the ambient temperature. Refer to the diagram (￫ ﬁgure 8) below.

Moreover, the maximum permissible current of 56 A must not be exceeded,

even in startup.

Figure 8: Thermal continuous current I

L

according to the ambient temperature T

A

a When mounting the devices with a minimum distance of 20 mm

b With directly linked devices

￫

Note that the direct linking of devices with a rated operational

current I

e

of 9 A can lead to a reduction in performance (derat-

ing) under some circumstances (￫ section 2.5, “Layout of

devices with Ie = 9 A”).

￫

EMS2-XBR-T-… (￫ section 9.1, “Three-phase current connec-

tor”, page 57) three-phase current connectors can be used to

connect the supply terminals 1L1, 3L2 and 5L3 of up to five

devices in a row.

T

A

[°C]

0 102030405055

6

8

0

4

2

9

7

5

3

1

I

L

[A]

①

②

①

I

e

= 3 A

I

e

= 9 A

2 Motor starter – overview

2.5 Layout of devices with I

e

= 9 A

16 EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com

The maximum current during start-up of the motor is derived by multiplying

the motor rated current with the “startup factor”, which with standard asyn-

chronous motors is usually between 6 and 10.

Contact the motor manufacturer to establish the actual value.

Table 6: Thermalcontinuous current I

L

with different mounting situations and I

e

= 9 A

EMS2-…-SWD devices with a rated operational current I

e

of 3 A can be

operated at temperatures up to 55°C without restriction.

Table 7: Thermal continuous current I

L

with different mounting situations and I

e

= 3 A

for EMS2-…-9-SWD devices Ambient temperature

Rated uninterrupted current I

U

with mounting situation 40 °C 45 °C 50 °C 55 °C

Single device, top-hat rail horizontal, motor feeder on bottom 9 A 9 A 9 A 7.6 A

Linked devices with a device width distance (22.5 mm),

Top-hat rail horizontal, motor feeder on bottom

9 A 9 A 6.8 A 6.1 A

Linked devices without spacing

Top-hat rail horizontal, motor feeder on bottom

5.2 A 3 A – –

for devices EMS2-…-3-SWD Ambient temperature

Rated uninterrupted current I

U

with mounting situation 40 °C 45 °C 50 °C 55 °C

Single device, top-hat rail horizontal, motor feeder on bottom 3 A 3 A 3 A 3 A

Linked devices with a device width distance (22.5 mm),

Top-hat rail horizontal, motor feeder on bottom

3 A 3 A 3 A 3 A

Linked devices without distance between

Top-hat rail horizontal, motor feeder on bottom

3 A 3 A – –

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