Bender RCMB423EM User manual

Manual
EN
RCMB423EM
Residual current monitor
for monitoring AC-, DC- and pulsed DC currents
in TN- and TT systems
Software version: D480 V1.01
RCMB423_D00241_01_M_XXEN/12.2016

Bender GmbH & Co. KG
P.O. Box 1161 • 35301 Gruenberg • Germany
Londorfer Strasse 65 • 35305 Gruenberg • Germany
Tel.: [phone] • Fax: [phone]
E-Mail: [email protected] • www.bender.de
©Bender GmbH & Co. KG
All rights reserved.
Reprinting only with permission of the publisher.
Subject to change!
Photos: Bender archives

Table of Contents
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RCMB423_D00241_01_M_XXEN/12.2016
1. Important information .................................................................................... 5
1.1 How to use this manual ................................................................................. 5
1.2 Technical support: service and support ................................................... 6
1.2.1 First level support ............................................................................................. 6
1.2.2 Repair service ..................................................................................................... 6
1.2.3 Field service ........................................................................................................ 7
1.3 Training courses ................................................................................................ 8
1.4 Delivery conditions .......................................................................................... 8
1.5 Inspection, transport and storage .............................................................. 8
1.6 Warranty and liability ...................................................................................... 9
1.7 Disposal ............................................................................................................ 10
2. Safety instructions ......................................................................................... 11
2.1 General safety instructions ........................................................................ 11
2.2 Work activities on electrical installations ............................................. 11
2.3 Intended use ................................................................................................... 12
2.4 Information about factory setting .......................................................... 12
3. Function ........................................................................................................... 13
3.1 Device characteristics .................................................................................. 13
3.2 Description of functions ............................................................................. 13
3.2.1 Connection monitoring .............................................................................. 14
3.2.2 Self-test, automatic ....................................................................................... 14
3.2.3 Self-test, manual ............................................................................................ 14
3.2.4 Malfunction ..................................................................................................... 14
3.2.5 Delay times t, ton and toff .......................................................................... 14
3.2.6 External, combined test or reset button T/R ....................................... 15

Table of Contents
4RCMB423_D00241_01_M_XXEN/12.2016
4. Installation and connection ......................................................................... 17
5. Operation and configuration ...................................................................... 19
5.1 Display elements in use .............................................................................. 19
5.2 Function of the operating elements ...................................................... 20
5.3 Menu structure ............................................................................................... 21
5.3.1 Quick menu ..................................................................................................... 22
5.3.2 Full menu .......................................................................................................... 24
5.4 Parameter settings ........................................................................................ 27
5.5 Explanatory notes on the setting parameters .................................... 28
5.5.1 Menu out .......................................................................................................... 28
5.5.2 Menu t (Set delay times) ............................................................................. 29
5.5.3 Menu SEt ........................................................................................................... 29
5.6 Menu InF (Querying device information) ............................................. 29
5.7 Menu HiS (Erasable history memory) ..................................................... 30
6. Setting ranges, factory setting, LEDs ......................................................... 31
6.1 Parameters ....................................................................................................... 31
6.2 Meaning of the LEDs .................................................................................... 33
7. Technical data ................................................................................................ 35
7.1 Tabular data .................................................................................................... 35
7.2 Standards, approvals and certifications ................................................ 39
7.3 Ordering information ................................................................................... 39
7.4 Error codes ....................................................................................................... 40
INDEX .................................................................................................................... 41

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RCMB423_D00241_01_M_XXEN/12.2016
1. Important information
1.1 How to use this manual
Always keep this manual within easy reach for future reference.
To make it easier for you to understand and revisit certain sections in this man-
ual, we have used symbols to identify important instructions and information.
The meaning of these symbols is explained below:
This manual is intended for qualified personnel working in
electrical engineering and electronics!
This signal word indicates that there is a high risk of danger
that will result in electrocution or serious injury if not
avoided.
This signal word indicates a medium risk of danger that
can lead to death or serious injury if not avoided.
This signal word indicates a low level risk that can result in
minor or moderate injury or damage to property if not
avoided.
This symbol denotes information intended to assist the user
in making optimum use of the product.
DANGER
WARNING
CAUTION

Important information
6RCMB423_D00241_01_M_XXEN/12.2016
This manual has been compiled with great care. It might nevertheless contain
errors and mistakes. Bender cannot accept any liability for injury to persons or
damage to property resulting from errors or mistakes in this manual.
1.2 Technical support: service and support
For commissioning and troubleshooting Bender offers you:
1.2.1 First level support
Technical support by phone or e-mail for all Bender products
 Questions concerning specific customer applications
 Commissioning
 Troubleshooting
Telephone: [phone]*
Fax: [phone]
In Germany only: 0700BenderHelp (Tel. and Fax)
E-mail: [email protected]
1.2.2 Repair service
Repair, calibration, update and replacement service for Bender products
 Repairing, calibrating, testing and analysing Bender products
 Hardware and software update for Bender devices
 Delivery of replacement devices in the event of faulty or incorrectly
delivered Bender devices
 Extended guarantee for Bender devices, which includes an in-house
repair service or replacement devices at no extra cost
Telephone: [phone]** (technical issues)
[phone]**, -785** (sales)
Fax: [phone]
E-mail: [email protected]
Please send the devices for repair to the following address:

Important information
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RCMB423_D00241_01_M_XXEN/12.2016
Bender GmbH, Repair-Service,
Londorfer Str. 65,
35305 Gruenberg
1.2.3 Field service
On-site service for all Bender products
 Commissioning, configuring, maintenance, troubleshooting of Bender
products
 Analysis of the electrical installation in the building (power quality test,
EMC test, thermography)
 Training courses for customers
Telephone: [phone]**, -762 **(technical issues)
[phone]** (sales)
Fax: [phone]
E-mail: [e-mail]
Internet: www.bender-de.com
*Available from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 8.00 p.m., Fr 7.00 a.m. - 13.00 p.m

Important information
8RCMB423_D00241_01_M_XXEN/12.2016
1.3 Training courses
Bender is happy to provide training regarding the use of test equipment.
The dates of training courses and workshops can be found on the Internet at
www.bender-de.com -> Know-how -> Seminars.
1.4 Delivery conditions
Bender sale and delivery conditions apply.
For software products the "Softwareklausel zur Überlassung von Standard-
Software als Teil von Lieferungen, Ergänzung und Änderung der Allgemeinen
Lieferbedingungen für Erzeugnisse und Leistungen der Elektroindustrie"
(software clause in respect of the licensing of standard software as part of de-
liveries, modifications and changes to general delivery conditions for prod-
ucts and services in the electrical industry) set out by the ZVEI (Zentralverband
Elektrotechnik- und Elektronikindustrie e. V.) (German Electrical and Electron-
ic Manufacturer's Association) also applies.
Sale and delivery conditions can be obtained from Bender in printed or elec-
tronic format.
1.5 Inspection, transport and storage
Inspect the dispatch and equipment packaging for damage, and compare the
contents of the package with the delivery documents. In the event of damage
in transit, please contact Bender immediately.
The devices must only be stored in areas where they are protected from dust,
damp, and spray and dripping water, and in which the specified storage tem-
peratures can be ensured.

Important information
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RCMB423_D00241_01_M_XXEN/12.2016
1.6 Warranty and liability
Warranty and liability claims in the event of injury to persons or damage to
property are excluded if they can be attributed to one or more of the follow-
ing causes:
 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 and the use of replacement parts or
accessories not approved by the manufacturer.
 Catastrophes caused by external influences and force majeure.
 Mounting and installation with device combinations not recom-
mended by the manufacturer.
This operating manual, especially the safety instructions,
must be observed by all personnel working on the device. Furthermore,
the rules and regulations that apply for accident prevention at the place of use
must be observed.

Important information
10 RCMB423_D00241_01_M_XXEN/12.2016
1.7 Disposal
Abide by the national regulations and laws governing the disposal of this de-
vice. Ask your supplier if you are not sure how to dispose of the old equip-
ment.
The directive on waste electrical and electronic equipment (WEEE directive)
and the directive on the restriction of certain hazardous substances in electri-
cal and electronic equipment (RoHS directive) apply in the European Commu-
nity. In Germany, these policies are implemented through the "Electrical and
Electronic Equipment Act" (ElektroG). According to this, the following applies:
 Electrical and electronic equipment are not part of household waste.
 Batteries and accumulators are not part of household waste and must
be disposed of in accordance with the regulations.
 Old electrical and electronic equipment from users other than private
households which was introduced to the market after 13 August 2005
must be taken back by the manufacturer and disposed of properly.
For more information on the disposal of Bender devices, refer to our
homepage at www.bender-de.com -> Service & support.

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RCMB423_D00241_01_M_XXEN/12.2016
2. Safety instructions
2.1 General safety instructions
Part of the device documentation in addition to this manual is the enclosed
"Safety instructions for Bender products".
2.2 Work activities on electrical installations
If the device is used outside the Federal Republic of Germany, the applicable
local standards and regulations must be complied with. The European stand-
ard EN 50110 can be used as a guide.
Only qualified personnel are permitted to carry out the
work necessary to install, commission and run a device or
system.
Risk of electrocution due to electric shock!
Touching live parts of the system carries the risk of:
 An electric shock
 Damage to the electrical installation
 Destruction of the device
Before installing and connecting the device, make sure
that the installation has been de-energised. Observe the
rules for working on electrical installations.
DANGER

Safety instructions
12 RCMB423_D00241_01_M_XXEN/12.2016
2.3 Intended use
The AC/DC sensitive residual current monitoring device RCMB423EM is used
for monitoring of earthed systems (TN and TT systems), in which DC or AC
fault currents can occur. Part of these systems are particularly loads contai-
ning six-pulse rectifiers or one-way rectifiers with smoothing, such as conver-
ters, battery chargers, construction site equipment with frequency-controlled
drives.
Since the values are measured with measuring current transformers, the
RCMB423EM is almost independent of the nominal voltage and the current of
the monitored system.
The response value IΔn2 as well as the response delay ton2 can be configured
directly from the standard display (quick menu).
In order to meet the requirements of the applicable standards, customised pa-
rameter 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.
2.4 Information about factory setting
page 31 provides a summary of all factory settings.
If you want to reset the residual current monitor to its factory setting in a spe-
cific case, refer to page 29.

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RCMB423_D00241_01_M_XXEN/12.2016
3. Function
3.1 Device characteristics
 AC/DC sensitive residual current monitor type B acc. to IEC 62020 and
IEC 60755
 Quick menu: direct setting of the response value IΔn2 as well as the
response delay ton2
 r.m.s. value measurement
 Alarm signalling via LEDs (AL1, AL2) and changeover contacts (K1/K2)
 CT connection monitoring
3.2 Description of functions
After connecting the supply voltage Us, the start-up delay is active. During this
start-up time, changes on the measured residual currents do not influence the
positions of the output relays. The residual current is measured via an external
measuring current transformer W20AB…W210AB. The currently measured in-
sulation resistance is indicated on the LC display. This way any changes, for ex-
ample when outgoing circuits are connected to the system, can be
recognised easily. If theset response values are exceeded, the response delays
ton1/2 start.
Once ton1/2 has elapsed, the selected alarm relays K1/K2 switch and the alarm
LEDs AL1/AL2 light up. If the residual current falls below the release value (re-
sponse value minus hysteresis), the release delay toff starts. After toff has
elapsed, the alarm relays will switch back to their initial state and the alarm
LEDs AL1/AL2 will go out. If the fault memory is activated, the alarm relays re-
main in alarm condition and the LEDs light until the reset button "R" is pressed
or the supply voltage is interrupted. The device function can be tested using
the test button "T". Parameters are assigned to the device via the LCD and the
control buttons on the front panel; this function can be password-protected.

Function
14 RCMB423_D00241_01_M_XXEN/12.2016
3.2.1 Connection monitoring
The connections to the measuring current transformer are constantly monito-
red. In the event of a fault, the alarm relays K1/K2 switch, the alarm LEDs AL1/
AL2/ON flash (Error code E.01). After eliminating the fault, the alarm relays
switch back automatically to their initial position, as long as the fault memory
M is deactivated. When the fault memory is activated, K1/K2 switch back to
their initial position by pressing the reset button "R". A cascaded second
measuring current transformer is not monitored.
3.2.2 Self-test, automatic
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 func-
tional faults will be detected and appear in form of an error code on the dis-
play. The alarm relays are not switched during this test.
3.2.3 Self-test, manual
The device carries out a self-test by pressing and holding the test button (> 2
s) during which internal functional faults are detected and displayed as an er-
ror code. The alarm relays are not switched during this test.
While pressing the test button T all available display elements for this device
are shown.
3.2.4 Malfunction
In the event of an internal malfunction, all three LEDs will flash. The display
shows an error code (E01…E32). In such a case please contact the Bender Ser-
vice.
3.2.5 Delay times t, ton and toff
The times t, ton and toff described below, delay alarm signalling via LEDs and
relays.
Start-up delay t
After connection to the supply voltage Usthe alarm indication is delayed by
the preset time t(0…10 s).

Function
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RCMB423_D00241_01_M_XXEN/12.2016
Response delay ton1/2
When the value drops below or exceeds the response value, the residual cur-
rent monitoring device needs the response time tan until indication of the
alarm. A set response delay ton1/2 (0…10 s) adds up to the device-related ope-
rating time tae and delays the alarm signalling (total delay time tan = tae + ton).
Should the fault no longer persist during the response delay, the alarm signal
drops out.
Delay on release toff
If the alarm no longer exists during the response delay and the fault memory
is deactivated, the alarm LEDs will go out and the alarm relays switch back to
their initial position. The alarm state is continuously maintained for the selec-
ted period by activating the delay on release (0...99 s).
3.2.6 External, combined test or reset button T/R
Reset = pressing the external button briefly (< 1 s)
Test = pressing and holding the external button (> 2 s)

Function
16 RCMB423_D00241_01_M_XXEN/12.2016

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RCMB423_D00241_01_M_XXEN/12.2016
4. Installation and connection
Dimension diagram, drawing for screw fixing, push-wire terminal
Only qualified personnel are permitted to carry out the
work necessary to install, commission and run a device or
system.
Risk of electrocution due to electric shock!
Touching live parts of the system carries the risk of:
 An electric shock
 Damage to the electrical installation
 Destruction of the device
Before installing and connecting the device, make sure
that the installation has been de-energised. Observe the
rules for working on electrical installations.
DANGER
90 mm
45
67,5
36 mm
31,1
47,5
70,5
2
2
100 mm
116 mm
Zubehör/
Accessory
1
2
3

Installation and connection
18 RCMB423_D00241_01_M_XXEN/12.2016
Connection
The front plate cover can be opened at the lower part marked with an arrow.
1. DIN Rail mounting:
Snap the rear mounting clip of the device into place in such a way that
a safe and tight fit is ensured.
Screw fixing:
Use a tool to position the rear mounting clips so that they project beyond the
enclosure (a second mounting clip is required, see ordering information).
Then fix the device using two M4 screws.
2. Wiring
Connect the device according to the wiring diagram.
Terminal Connections
A1, A2 Connection to supply voltage Us
1Socket for power supply cable WX… to measuring current
transformer of type W…AB
T/R Connection to combined test and reset button
11, 12, 14 Alarm relay K1
21, 22, 24 Alarm relay K2
T/R
11 1412
21 2422
A2A1
T/R
WX...
1234
kl
+
-
k
l
-
GND
+
W...AB
1
a
b
ab
T
T
GND

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RCMB423_D00241_01_M_XXEN/12.2016
5. Operation and configuration
5.1 Display elements in use
The meaning of the display elements in use is listed in the table below.
Display elements in use Elemen
tFunction
RL Reload function with memory = off
(L = I.)
I2 Response value IΔn2 in mA
(alarm 2, main alarm)
I1 Response value IΔn1 in % of IΔn2
(alarm 1, prewarning)
r1, 1
r2, 2
Alarm relay K1
Alarm relay K2
I Hys,
%
Response value hysteresis in %
ton1,
ton2,
T,
toff
Response delay ton1 (K1)
Response delay ton2 (K2)
Start-up delay t,
Delay on release toff for K1, K2
MFault memory active
Operating principle of the alarm
relays
Password protection enabled

Operation and configuration
20 RCMB423_D00241_01_M_XXEN/12.2016
5.2 Function of the operating elements
User interface Elemen
tFunction
ON,
green
Lights continuously: Power On LED,
flashes:
system fault or malfunction of con-
nection monitoring
AL1,
AL2
LED alarm 1 lit up (yellow):
response value 1 reached (IΔn1)
LED alarm 2 lit up (yellow): response
value 2 reached (IΔn2)
13 mA
M
13 m A flow through the measuring
current transformer,
fault memory active
T, Standard display:
(> 2 s): display test, self-test
Menu display: Up button (< 1 s)
R, Standard display: Reset button
(> 2 s): erasing the fault memory;
Menu display: Down button (< 1 s)
MENU,
Standard display:
(< 1 s): Quick menu
(> 5 s): Full menu
Menu display: Enter button
(< 1 s): to confirm menu item, sub-
menu item and value
(> 2 s): back to the next higher
menu level
ON AL1 AL2
TMENUR