Bender RCMA423 Manuel utilisateur

Manual EN

LINETRAXX® RCMA423

Residual current monitor

for monitoring AC- and (pulsed) DC-currents IΔ = 30 mA…3 A

in TN- and TT systems

RCMA423_D00063_04_M_XXEN/12.2023

2 RCMA423_D00063_04_M_XXEN/12.2023

LINETRAXX® RCMA423

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 symbols...........................................................................................................................................5

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

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

1.6 Delivery conditions......................................................................................................................................... 6

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

1.8 Warranty and liability.....................................................................................................................................6

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

1.10 Safety.................................................................................................................................................................... 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 query........................................................................................................................... 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 cycles................................................................................................................9

2.3.7 Assigning alarm categories to alarm relays K1/K2..............................................................................9

2.3.8 Time delays 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 Factory setting FAC...................................................................................................................................... 10

2.3.12 Erasable history memory............................................................................................................................10

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

2.3.14 Fault memory..................................................................................................................................................10

3Installation, connection and commissioning 11

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

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

RCMA423_D00063_04_M_XXEN/12.2023 3

Table of contents

4Operation and setting 13

4.1 Display elements in use..............................................................................................................................13

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

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

4.4 Display in standard mode..........................................................................................................................16

4.5 Display in menu mode................................................................................................................................16

5Parameter settings 18

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

5.2 Fault memory..................................................................................................................................................19

5.3 Alarm relays.....................................................................................................................................................19

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

5.5 Set the time delays.......................................................................................................................................21

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

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

5.8 Factory settings..............................................................................................................................................24

5.9 Device information query.......................................................................................................................... 24

5.10 History memory query................................................................................................................................ 24

6Technical Data 25

6.1 Factory settings..............................................................................................................................................25

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

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

6.4 Standards, approvals and certifications................................................................................................30

6.5 Ordering information...................................................................................................................................30

6.6 Document revision history........................................................................................................................ 31

4 RCMA423_D00063_04_M_XXEN/12.2023

LINETRAXX® RCMA423

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 ‘Safety

instructions for Bender products’.

ADVICE

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

manual within easy 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 injury if not avoided.

WARNING

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

CAUTION

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

avoided.

ADVICE

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

device is handled incorrectly.

Information can help to optimise the use of the product.

1 3 Signs and symbols

Disposal Protect from moisture Protect from dust

Temperature range Recycling 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.

RCMA423_D00063_04_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 delivery set out by Bender GmbH & Co. KG apply. 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 delivery conditions for products and services in the

electrical industry’

1 7 Inspection, transport and storage

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

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

The following must be observed when storing the devices:

1 8 Warranty and liability

Warranty and liability claims for personal injury and property 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 by parties other than the manufacturer.

•Non-observance of technical data.

•Repairs carried out incorrectly.

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

manufacturer.

•Catastrophes caused by external influences and force majeure.

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

This operating manual and the enclosed safety instructions must be observed by all persons working with the

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

observed.

6 RCMA423_D00063_04_M_XXEN/12.2023

LINETRAXX® RCMA423

1 9 Disposal of Bender devices

Abide by 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 Germany, 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 systems must be observed.

RCMA423_D00063_04_M_XXEN/12.2023 7

Function

2 Function

2 1 Intended use

The AC/DC sensitive residual current monitor RCMA423 is designed for use in earthed systems (TN and TT

systems) where DC and AC fault currents may occur.

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

converters, battery chargers, construction site equipment with frequency-controlled drives. Two separately

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 RCMA423 is

nearly independent of the nominal voltage and the load current of the system 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. Any use other than that described in this manual is

regarded as improper.

2 2 Device features

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

•Two separately adjustable response ranges (prewarning, alarm)

•Adjustable switching hysteresis

•R.m.s. value measurement

•Starting delay, response delay and delay on release

•Measured value display via multi-functional LC display

•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 memory function can be switched off

•CT connection monitoring

2 3 Function

Once the supply voltage US is applied, the starting delay is activated. Measured values changing during this

time do not influence the switching state of the alarm relays.

Die Differenzstrommessung erfolgt über einen externen Messstromwandler CTUB101- CTBC20…210(P)

The currently measured value is shown on the LC display. In this way any changes, for example when circuits

are connected to the system, can be recognized easily.

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

response delay ton1/2 has elapsed, the K1/ K2 alarm relays switch and the alarm LEDs AL1/AL2 light up.

If the residual current falls below the release value (response value minus hysteresis), the delay on release toff

begins. Once the release delay toff has elapsed, the alarm relays return to their original state and the alarm LEDs

AL1/AL2 go out. If the fault memory is activated, the alarm relays remain in the alarm state and the LEDs light

until the reset button is pressed or until the supply 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 display and the function keys integrated in the front plate and can be password-protected.

8 RCMA423_D00063_04_M_XXEN/12.2023

LINETRAXX® RCMA423

2 3 1 Connection monitoring

The CT connections are continuously monitored. In the event of a fault, the alarm relays K1 / K2 switch without

delay, the alarm LEDs AL1 / AL2 / ON flash (Error Code E.01). After eliminating the fault, the alarm relays

automatically return to their initial position, provided that the fault memory M is deactivated. With the fault

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

measuring current transformer will not be monitored.

2 3 2 Fast response value query

With the display in standard mode, the currently measured response values IΔn1 and IΔn2 can be queried

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

fast response value query, press the enter key.

2 3 3 Automatic self test

The device automatically carries out a self test after connecting to the system to be monitored and later every

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

the display.

The alarm relays 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 displayed in form of an error code. The alarm relays are not checked during this

test.

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

2 3 5 Functional faults

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

such a case please contact the Bender Service.

2 3 6 Set the number of reload cycles

If faults occur only temporarily, but recurrently, in the system being monitored, with the fault memory M

deactivated, the alarm relays would switch synchronously 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 cycles is

exceeded, the fault memory 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 by device test can be

assigned to the alarm relays via the ‘out’ menu.

2 3 8 Time delays t, ton and toff

The times t, ton and toff described below, delay the output of alarms via LEDs and relays.

Starting delay t

After connection to the supply voltage, the alarm indication is delayed by the preset time t (0…10 s).

Response delay ton1/2

RCMA423_D00063_04_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

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

related operating time tae and delays alarm signalling (total delay 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 memory, the alarm LEDs go out and the alarm relays switch

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

maintained for the selected period.

2 3 9 Residual current monitoring in window discriminator mode

Change the measuring principle by 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 by the device.

2 3 10 Password protection (on, OFF)

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

(0…999).

2 3 11 Factory setting FAC

After activating the factory setting, all settings previously changed are reset to delivery status.

2 3 12 Erasable history memory

The first alarm value that occurs will be saved in this memory. The memory 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 memory can be activated, deactivated or set to continuous mode (con). If the fault memory is set to

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

reset by means of the reset button R.

10 RCMA423_D00063_04_M_XXEN/12.2023

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