Bender RCMA420 Manuel utilisateur

Manual EN

LINETRAXX® RCMA420

Residual current monitor

for monitoring AC and (pulsed) DC currents IΔn = 10…500 mA

in TN and TT s stems

RCMA420_D00059_05_M_XXEN/12.2023

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2 RCMA420_D00059_05_M_XXEN/12.2023

LINETRAXX® RCMA420

Table of contents

1General information 5

1.1 How to use the manual.................................................................................................................................5

1.2 Indication of important instructions and information.......................................................................5

1.3 Signs and s mbols...........................................................................................................................................5

1.4 Service and Support....................................................................................................................................... 5

1.5 Training courses and seminars...................................................................................................................6

1.6 Deliver conditions......................................................................................................................................... 6

1.7 Inspection, transport and storage.............................................................................................................6

1.8 Warrant and liabilit .....................................................................................................................................6

1.9 Disposal of Bender devices..........................................................................................................................7

1.10 Safet .................................................................................................................................................................... 7

2Function 8

2.1 Intended use......................................................................................................................................................8

2.2 Device features................................................................................................................................................. 8

2.3 Function...............................................................................................................................................................8

2.3.1 Connection monitoring.................................................................................................................................9

2.3.2 Fast response value quer ........................................................................................................................... 9

2.3.3 Automatic self test.......................................................................................................................................... 9

2.3.4 Manual self test................................................................................................................................................ 9

2.3.5 Functional faults...............................................................................................................................................9

2.3.6 Set the number of reload c cles................................................................................................................9

2.3.7 Assigning alarm categories to alarm rela s K1/K2..............................................................................9

2.3.8 Time dela s t, ton and toff...............................................................................................................................9

2.3.9 Residual current monitoring in window discriminator mode...................................................... 10

2.3.10 Password protection (on, OFF)................................................................................................................ 10

2.3.11 Factor setting FAC...................................................................................................................................... 10

2.3.12 Erasable histor memor ............................................................................................................................10

2.3.13 External, combined test/reset button T/R........................................................................................... 10

2.3.14 Fault memor ..................................................................................................................................................10

3Installation, connection and commissioning 11

3.1 Wiring.................................................................................................................................................................11

3.2 Commissioning...............................................................................................................................................12

RCMA420_D00059_05_M_XXEN/12.2023 3

Table of contents

4Operation and setting 13

4.1 Displa elements in use..............................................................................................................................13

4.2 Function of the operating elements......................................................................................................14

4.3 Menu structure...............................................................................................................................................14

4.4 Displa in standard mode..........................................................................................................................16

4.5 Displa in menu mode................................................................................................................................16

5Parameter settings 18

5.1 Response value setting for overcurrent............................................................................................... 18

5.2 Fault memor ..................................................................................................................................................19

5.3 Alarm rela s.....................................................................................................................................................19

5.4 Alarm categories............................................................................................................................................20

5.5 Set the time dela s.......................................................................................................................................21

5.6 Changeover: overcurrent/undercurrent/window mode................................................................ 22

5.7 Password protection.................................................................................................................................... 22

5.8 Factor settings..............................................................................................................................................24

5.9 Device information quer .......................................................................................................................... 24

5.10 Histor memor quer ................................................................................................................................ 24

6Technical Data 25

6.1 Factor settings..............................................................................................................................................25

6.2 Error codes.......................................................................................................................................................25

6.3 Tabular data.................................................................................................................................................... 25

6.4 Standards, approvals and certifications................................................................................................29

6.5 Ordering information...................................................................................................................................29

6.6 Document revision histor ........................................................................................................................ 30

4 RCMA420_D00059_05_M_XXEN/12.2023

LINETRAXX® RCMA420

1 General information

1 1 How to use the manual

ADVICE

This manual is intended for qualified personnel working in electrical engineering and electronics!

Part of the device documentation in addition to this manual is the enclosed supplement ‘Safet

instructions for Bender products’.

ADVICE

Read the operating manual before mounting, connecting and commissioning the device. Keep the

manual within eas reach for future reference.

1 2 Indication of important instructions and information

DANGER

Indicates a high risk of danger that will result in death or serious injur if not avoided.

WARNING

Indicates a medium risk of danger that can lead to death or serious injur if not avoided.

CAUTION

Indicates a low-level risk that can result in minor or moderate injur or damage to propert if not

avoided.

ADVICE

Indicates important facts that do not result in immediate injuries. The can lead to malfunctions if the

device is handled incorrectl .

Information can help to optimise the use of the product.

1 3 Signs and symbols

Disposal Protect from moisture Protect from dust

Temperature range Rec cling RoHS directives

1 4 Service and Support

Information and contact details about customer service, repair service or field service for Bender devices are

available on the following website: Fast assistance | Bender GmbH & Co. KG.

RCMA420_D00059_05_M_XXEN/12.2023 5

General information

1 5 Training courses and seminars

Regular face-to-face or online seminars for customers and other interested parties:

www.bender.de > know-how > seminars.

1 6 Delivery conditions

The conditions of sale and deliver set out b Bender GmbH & Co. KG appl . These can be obtained in printed

or electronic format.

The following applies to software products:

Die Elektroindustrie

‘Software clause in respect of the licensing of standard software as part of deliveries,

modifications and changes to general deliver conditions for products and services in the

electrical industr ’

1 7 Inspection, transport and storage

Check the shipping and device packaging for transport damage and scope of deliver . In the event of

complaints, the compan must be notified immediatel , see ‘www.bender.de > service & support.’.

The following must be observed when storing the devices:

1 8 Warranty and liability

Warrant and liabilit claims for personal injur and propert damage are excluded in the case of:

•Improper use of the device.

•Incorrect mounting, commissioning, operation and maintenance of the device.

•Failure to observe the instructions in this operating manual regarding transport, commissioning, operation

and maintenance of the device.

•Unauthorised changes to the device made b parties other than the manufacturer.

•Non-observance of technical data.

•Repairs carried out incorrectl .

•The use of accessories or spare parts that are not provided, approved or recommended b the

manufacturer.

•Catastrophes caused b external influences and force majeure.

•Mounting and installation with device combinations not approved or recommended b the manufacturer.

This operating manual and the enclosed safet instructions must be observed b all persons working with the

device. Furthermore, the rules and regulations that appl for accident prevention at the place of use must be

observed.

6 RCMA420_D00059_05_M_XXEN/12.2023

LINETRAXX® RCMA420

1 9 Disposal of Bender devices

Abide b the national regulations and laws governing the disposal of this device.

For more information on the disposal of Bender devices, refer to

www.bender.de > service & support.

1 10 Safety

If the device is used outside the Federal Republic of German , the applicable local standards and regulations

must be complied with. In Europe, the European standard EN 50110 applies.

DANGER Risk of fatal injury due to electric shock!

Touching live parts of the system carries the risk of:

•Risk of electrocution due to electric shock

•Damage to the electrical installation

•Destruction of the device

Before installing the device and before working on its connections, make sure that the installation

has been de-energised. The rules for working on electrical s stems must be observed.

RCMA420_D00059_05_M_XXEN/12.2023 7

Function

2 Function

2 1 Intended use

The AC/DC sensitive residual current monitor RCMA420 is designed for use in earthed s stems (TN and TT

s stems) where DC and AC fault currents ma occur.

These are in particular loads containing six-pulse rectifiers or one wa rectifiers with smoothing, such as

converters, batter chargers, construction site equipment with frequenc -controlled drives. Two separatel

adjustable response ranges allow to distinguish between prewarning (IΔn1 = 50…100 % of the set response

value IΔn2) and alarm (IΔn2). Since the values are measured with measuring current transformers, the RCMA is

nearl independent of the nominal voltage and the load current of the s stem being monitored.

In order to meet the requirements of the applicable standards, customised parameter settings must be made

on the equipment in order to adapt it to local equipment and operating conditions. Please heed the limits of

the range of application indicated in the technical data. An use other than that described in this manual is

regarded as improper.

2 2 Device features

•AC/DC sensitive residual current monitor T pe B according to IEC 62020 and IEC 60755

•Two separatel adjustable response ranges (prewarning, alarm)

•Adjustable switching h steresis

•R.m.s. value measurement

•Starting dela , response dela and dela on release

•Measured value displa via multi-functional LC displa

•Alarm indication via LEDs (AL1, AL2) and changeover contacts (K1, K2)

•N/C operation or N/O operation selectable

•Password protection against unauthorized parameter changing

•Fault memor function can be switched off

•CT connection monitoring

2 3 Function

Once the suppl voltage US is applied, the starting dela is activated. Measured values changing during this

time do not influence the switching state of the alarm rela s.

Residual current measurement takes place via an external measuring current transformer CTUB101- CTBC20…

60.

The currentl measured value is shown on the LC displa . In this wa an changes, for example when circuits

are connected to the s stem, can be recognized easil .

If the measured value exceeds one or both response values, the response dela s ton1/2 start running. Once the

response dela ton1/2 has elapsed, the K1/ K2 alarm rela s switch and the alarm LEDs AL1/AL2 light up.

If the residual current falls below the release value (response value minus h steresis), the dela on release toff

begins. Once the release dela toff has elapsed, the alarm rela s return to their original state and the alarm LEDs

AL1/AL2 go out. If the fault memor is activated, the alarm rela s remain in the alarm state and the LEDs light

until the reset button is pressed or until the suppl voltage is interrupted.

The device function can be tested using the test button. The parameterization of the device can be carried out

via the LC displa and the function ke s integrated in the front plate and can be password-protected.

8 RCMA420_D00059_05_M_XXEN/12.2023

LINETRAXX® RCMA420

2 3 1 Connection monitoring

The CT connections are continuousl monitored. In the event of a fault, the alarm rela s K1 / K2 switch without

dela , the alarm LEDs AL1 / AL2 / ON flash (Error Code E.01). After eliminating the fault, the alarm rela s

automaticall return to their initial position, provided that the fault memor M is deactivated. With the fault

memor activated, K1/K2 return to their initial position b pressing the reset button R. A second cascaded

measuring current transformer will not be monitored.

2 3 2 Fast response value query

With the displa in standard mode, the currentl measured response values IΔn1 and IΔn2 can be queried

pressing the Up and Down ke s ( < 1.5 s). Switchover to the Menu mode is not required. If ou want to exit the

fast response value quer , press the enter ke .

2 3 3 Automatic self test

The device automaticall carries out a self test after connecting to the s stem to be monitored and later ever

24 hours. During the self test internal functional faults will be detected and appear in form of an error code on

the displa .

The alarm rela s are not checked during this test.

2 3 4 Manual self test

After pressing the test button for > 1.5 s, the device carries out a self test. During this test, internal functional

faults are detected and will be displa ed in form of an error code. The alarm rela s are not checked during this

test.

While the test button T is pressed and held down, all device-related displa elements appear on the displa .

2 3 5 Functional faults

If an internal functional fault occurs, all three LEDs flash. An error code will appear on the displa (E01…E32). In

such a case please contact the Bender Service.

2 3 6 Set the number of reload cycles

If faults occur onl temporaril , but recurrentl , in the s stem being monitored, with the fault memor M

deactivated, the alarm rela s would switch s nchronousl to the error status. RL in the out menu can be

used to limit the number of these changeover processes. As soon as the preset number of switching c cles is

exceeded, the fault memor will come on and an activated alarm remains stored.

2 3 7 Assigning alarm categories to alarm relays K1/K2

The alarm categories device error, residual current IΔn1, residual current IΔn2 or alarm b device test can be

assigned to the alarm rela s via the ‘out’ menu.

2 3 8 Time delays t, ton and toff

The times t, ton and toff described below, dela the output of alarms via LEDs and rela s.

Starting delay t

After connection to the suppl voltage, the alarm indication is dela ed b the preset time t (0…10 s).

Response delay ton1/2

RCMA420_D00059_05_M_XXEN/12.2023 9

Function

If the residual current increases above or falls below the response value the response time tan expires. After the

expir of the response time an alarm is signalled. A set response dela ton1/2 (0…10 s) adds up to the device-

related operating time tae and dela s alarm signalling (total dela time tan = tae + ton).

If the residual current fault changes from a value above the response value to a value below the response

value, an alarm will not be signalled.

Delay on release toff

When no alarm exists after deactivating the fault memor , the alarm LEDs go out and the alarm rela s switch

back to their initial position. After activating the dela on release (0…99 s), the alarm state is continuousl

maintained for the selected period.

2 3 9 Residual current monitoring in window discriminator mode

Change the measuring principle b selecting the window mode (SEt / In). In the window discriminator mode,

the threshold values I1 and I2 represent the upper and the lower value. If the measured value is not within this

area, an alarm is initiated b the device.

2 3 10 Password protection (on, OFF)

When the password protection is activated (on), settings are onl possible after entering the correct password

(0…999).

2 3 11 Factory setting FAC

After activating the factor setting, all settings previousl changed are reset to deliver status.

2 3 12 Erasable history memory

The first alarm value that occurs will be saved in this memor . The memor can be cleared via the menu HiS.

2 3 13 External, combined test/reset button T/R

Reset = Pressing the external button < 1.5 s

Test = Pressing the external button > 1.5 s

2 3 14 Fault memory

The fault memor can be activated, deactivated or set to continuous mode (con). If the fault memor is set to

‘con’ mode, the alarm parameters remain stored even on failure of the suppl voltage. Stored alarms can be

reset b means of the reset button R.

10 RCMA420_D00059_05_M_XXEN/12.2023

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