Operating Manual
for monitoring AC, DC and pulsed DC currents
RCMA420
Residual current monitor
in TN and TT systems
Software version D242 V1.2x
Power in electrical safety
TGH1411en/03.2011
Dipl.-Ing. W. Bender GmbH & Co. KG
Londorfer Str. 65 • 35305 Grünberg • Germany
Postfach 1161 • 35301 Grünberg • Germany
Tel.: +49 6401 807-0
Fax: +49 6401 807-259
E-Mail: info@bender-de.com
Web: http://www.bender-de.com
© Dipl.-Ing. W. Bender GmbH & Co. KG
All rights reserved.
Reprinting only with permission
of the publisher.
Subject to change!
Table of Contents
1. Effective use of this manual ........................................................................... 5
1.1 Notes for the user ............................................................................................. 5
1.2 Intended use ...................................................................................................... 5
1.3 Information about factory setting ............................................................. 6
2. Safety information ........................................................................................... 7
2.1 Safety information ........................................................................................... 7
2.2 Work activities on electrical installations ................................................ 7
3. Function ............................................................................................................. 9
3.1 Device features ................................................................................................. 9
3.2 Function ............................................................................................................... 9
3.2.1 Connection monitoring .............................................................................. 10
3.2.2 Fast response value query ......................................................................... 10
3.2.3 Automatic self test ........................................................................................ 10
3.2.4 Manual self test .............................................................................................. 10
3.2.5 Functional faults ............................................................................................ 10
3.2.6 Set the number of reload cycles .............................................................. 11
3.2.7 Assigning alarm categories to alarm relays K1/K2 ............................ 11
3.2.8 Time delays t, ton and toff ....................................................................... 11
3.2.9 Starting delay t ............................................................................................... 11
3.2.10 Response delay ton1/2 ................................................................................ 11
3.2.11 Delay on release toff .................................................................................... 11
3.2.12 Residual current monitoring in window discriminator mode ...... 12
3.2.13 Password protection (on, OFF) ................................................................. 12
3.2.14 Factory setting FAC ...................................................................................... 12
3.2.15 Erasable history memory ............................................................................ 12
3.2.16 External, combined test/reset button T/R ............................................ 12
3.2.17 Fault memory ................................................................................................. 12
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3
Table of Contents
4. Installation and connection ......................................................................... 13
5. Operation and setting .................................................................................. 15
5.1 Display elements in use .............................................................................. 15
5.2 Function of the operating elements ...................................................... 16
5.3 Menu structure ............................................................................................... 17
5.4 Display in standard mode .......................................................................... 18
5.5 Display in menu mode ................................................................................ 19
5.5.1 Parameter query and setting: overview ................................................ 19
5.5.2 Changeover from overcurrent to undercurrent mode
or to window mode ...................................................................................... 21
5.5.3 Response value setting for overcurrent: ............................................... 22
5.5.4 Setting the fault memory and alarm relay operating mode .......... 23
5.5.5 Assigning alarm categories to the alarm relays ................................. 24
5.5.6 Set the time delays ....................................................................................... 26
5.5.7 Changing from overcurrent operation to window operation ...... 27
5.5.8 Factory setting and password protection ............................................ 27
5.5.9 Restoring factory settings .......................................................................... 29
5.5.10 Device information query (Example) ..................................................... 29
5.5.11 History memory query ................................................................................. 29
5.6 Commissioning .............................................................................................. 30
5.7 Factory setting ................................................................................................ 30
6. Technical data ................................................................................................ 31
6.1 Data in tabular form ..................................................................................... 31
6.2 Standards, approvals and certifications ................................................ 34
6.3 Ordering information ................................................................................... 35
6.4 Error codes ....................................................................................................... 36
INDEX .................................................................................................................... 37
4
TGH1411en/03.2011
1. Effective use of this manual
1.1 Notes for the user
This manual is intended for experts in electrical engineering and electronics!
In order to make it easier for you to find specific text passages or references in
this manual and for reasons of comprehensibility, important information is
emphasized by symbols. The meaning of these symbols is explained below:
Information calling attention to hazards are marked
with this warning symbol.
Information intended to assist the user to make optimum
use of the product are marked with the Info symbol.
1.2 Intended use
The AC/DC sensitive residual current monitor RCMA420 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 (I
Since the values are measured with measuring current transformers, the
RCMA is nearly independent of the nominal voltage and the load current of
the system being monitored.
= 50…100 % of the set response value I
Δn1
) and alarm ( I
Δn2
Δn2
).
TGH1411en/03.2011
5
Effective use of this manual
1.3 Information about factory setting
Page 30 provides a summary of all factory settings.
If you want to reset the residual current monitor to factory settings, refer to
page 29.
6
TGH1411en/03.2011
2. Safety information
2.1 Safety information
In addition to this data sheet, the documentation of the device includes a
sheet entitled "Important safety instructions for BENDER products“.
2.2 Work activities on electrical installations
All work activities necessary for installation, commissioning or work
activities during operation of electrical devices or systems are to be carried out by adequately skilled personnel.
Observe the relevant regulations applying to work on electrical instal-
lations, in particular DIN EN 50110 or its subsequent regulations.
Unprofessional work activities on electrical installations
may result in a threat of danger to life and limb!
If the equipment is used outside the Federal Republic of Germany, the
respective national standards and regulations are to be observed. The
European standard EN 50110 is recommended to be used as a directive.
TGH1411en/03.2011
7
Safety information
8
TGH1411en/03.2011
3. Function
3.1 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
3.2 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. Residual current measurement takes place via an external
measuring current transformer of the W20AB…W60AB series. The currently
mea sure d val ue is sho wn on the LC di spla y. In thi s way any c hanges, for e xample when circuits are connected to the system, can be recognized easily. If the
measured value exceeds one or both response values, the response delays
t
start running. Once the response delay t
on1/2
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 t
return to their original state and the alarm LEDs AL1/AL2 go out. If the fault
begins. Once the release delay t
off
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.
has elapsed, the K1/K2
on1/2
has elapsed, the alarm relays
off
TGH1411en/03.2011
9
Function
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.
3.2.1 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.
3.2.2 Fast response value query
With the display in standard mode, the currently measured response values
I
and I
Δn1
can be queried pressing the Up and Down keys ( < 1.5 s). Switch-
Δn2
over to the Menu mode is not required. If you want to exit the fast response
value query, press the enter key.
3.2.3 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.
3.2.4 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.
3.2.5 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 Serv-
10
TGH1411en/03.2011
Function
ice.
3.2.6 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.
3.2.7 Assigning alarm categories to alarm relays K1/K2
The alarm categories device error, res idual current I
alarm by device test can be assigned to the alarm relays via the "out" menu.
, residual current I
Δn1
Δn2
or
3.2.8 Time delays t, t
The times t, ton and t
and t
on
described below, delay the output of alarms via LEDs
off,
off
and relays.
3.2.9 Starting delay t
After connection to the supply voltage, the alarm indication is delayed by the
preset time t (0...10 s).
3.2.10 Response delay t
on1/2
If the residual current increases above or falls below the response value the response time t
nalled. A set response delay t
operating time t
If the residual current fault changes from a value above the response value to
expires. After the expiry of the response time an alarm is sig-
an
and delays alarm signalling (total delay time tan = tae + ton).
ae
(0...10 s) adds up to the device-related
on1/2
a value below the response value, an alarm will not be signalled.
3.2.11 Delay on release t
off
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.
TGH1411en/03.2011
11
Function
3.2.12 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. See page 27.
3.2.13 Password protection (on, OFF)
When the password protection is activated (on), settings are only possible after entering the correct password (0...999).
3.2.14 Factory setting FAC
After activating the factory setting, all settings previously changed are reset to
delivery status.
3.2.15 Erasable history memory
The first alarm value that occurs will be saved in this memory. The memory can
be cleared via the menu HiS.
3.2.16 External, combined test/reset button T/R
Reset= Pressing the external button < 1.5 s
Test= Pressing the external button > 1.5 s
3.2.17 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.
12
TGH1411en/03.2011
4. Installation and connection
Ensure safe isolation from supply in the installation area. Observe the installation rules for live working.
Dimension diagram, drawing for screw mounting, push-wire terminal connection
Zubehör/
70,5
47,5
31,1
36 mm
Accessory
100 mm
116 mm
67,5
90 mm
45
2
1
3
The front plate cover is easy to open at the lower part marked by an arrow.
TGH1411en/03.2011
13
Installation and connection
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 move the rear mounting clips (a second mounting clip
required, see ordering information) to a position that it projects
beyond the enclosure. Then fix the device using two M4 screws.
2. Wiring
Connect the device according the wiring diagram.
T/R
k
l
T
1
ab
11 1412
21 2422
T/R
W...AB
kl
-
12
+
GND
34
T
GND
+
WX...
a
b
-
Ter m in al Co nn ec t io ns
Connection to supply voltage
A1, A2
Socket for the connecting cable WX... to the
1
measuring current transformer
T/R Connection to the combined test/reset button
11, 12, 14 Alarm relay K1
21, 22, 24 Alarm relay K2
14
A2A1
TGH1411en/03.2011
5. Operation and setting
5.1 Display elements in use
A detailed description of the meaning of the display elements in use is given
in the table below.
Ele-
Display elements in use
Func tion
ment
RL Reload function with memory = off
(L = I.)
I2 Response value I
Δn2
as mA
(Alarm 2)
I1 Response value I
Δn1
as % of I
Δn2
(Alarm 1, prewarning)
r1, 1
Alarm relay K1
r2, 2
Alarm relay K2
I Hys,
Response value hysteresis as %
%
Response delay t
ton1,
ton2,
Response delay t
t,
Starting delay t,
toff
Delay on release t
M
Fault memory active
on1
on2
off
(K1)
(K2)
for K2
Relay operating mode K2
Password protection enabled
TGH1411en/03.2011
15
5.2 Function of the operating elements
Device front Element Function
ON,
LED lighting continuously: Power On
green
Flashing LED:
System fault or connection monitoring fault
AL1,
LED Alarm 1 lights (yellow):
Response value 1 reached
AL2
LED Alarm 2 lights (yellow):
Response value 2 reached
13 mAM13 mA flow through
the measuring current transformer,
ON
TMENUR
AL1 AL2
MENU, MENU key (> 1.5 s):
Fault memory active
T, Test button (> 1.5 s):
To indicate the available display elements, to start a self test;
Up key (< 1.5 s):
Menu items/values
R, Reset button (> 1.5 s):
Deleting the fault memory;
Down key (< 1.5 s):
Menu items/values
Starting the menu mode;
Enter key (< 1.5 s):
Confirm menu item, submenu item
and value.
Enter key (> 1.5 s):
Back to the next higher menu level.
Operation and setting
(I
)
Δn1
(I
)
Δn2
16
TGH1411en/03.2011
Operation and setting
5.3 Menu structure
All adjustable parameters are listed in the columns "menu item" and "adjustable parameters". A display-like representation is used to illustrate the parameters in the column menu item. Different alarm categories can be assigned to
the alarm relays K1, K2 via the submenus r1, r2. This is done by activation or
deactivation of the respective function.
Menu
AL
(response -
values)
out
(output con-
(K1: (assign-
trol)
(K2: (assign-
TGH1411en/03.2011
Sub
Menu
r1
ment alarm
category)
r2
ment alarm
category)
Menu
Activa-
item
> I2 - (HI)
> I1 - (HI)
Hys -
Adjustable parameter
tion
I
(Alarm 2)
Δn2
I
as % of I
Δn1
(Alarm 1, prewarning)
Hysteresis I
Δn1
Δn2
/ I
M ON Fault memory
1
- Operating mode K1 (n.c.)
2
- Operating mode K2 (n.c.)
RL -
Reload function (memory =
off)
1 Err ON Device error at K1
r1 I1 off
r1 I2 ON
Prewarning I
Alarm I
Δn2
Δn1
at K1
1 tES ON Device test
2 Err ON Device error at K2
r2 I1 off
r2 I2 ON
Prewarning I
Alarm I
Δn2
Δn1
at K2
2 tES ON Device test
Δn2
at K1
at K2
17
Operation and setting
Menu
Sub
Menu
t
(timing
check)
Set
(device con-
trol)
InF -
HiS Clr -
Menu
Activa-
item
t on 1 - Response delay K1
t on 2 - Response delay K2
t-Starting delay
t off - Delay on release K1/K2
I 12 HI
FAC - Restore factory settings
SYS - Function blocked
Adjustable parameter
tion
Selectable parameters:
High, window function, low
Parameter setting via pass-
off
word
Display hard / software version
History memory for the first
alarm value, erasable
5.4 Display in standard mode
By default, the currently measured residual current is displayed. The current
response values I1 (prewarning) and I2 (alarm) can be displayed using the Up
and Down key. Press the Enter key to return to the measured value.
18
In the standard mode, the currently set response values I1 and I2
can be displayed using the Up and Down keys.
TGH1411en/03.2011
Operation and setting
5.5 Display in menu mode
5.5.1 Parameter query and setting: overview
Menu
Adjustable parameter
item
Response values query and setting:
AL
out
t
SEt
InF Query hard and software version
HiS Query the first stored alarm value
ESC Move to the next higher menu level (back)
– Residual current I2 (I
– Residual current I1 (I
– Hysteresis of the response values: % Hys
Δn2
Δn1
) (AL2)
) (AL1)
Configuration of the fault memory and the alarm relays:
– Activate/deactivate the fault memory or assign continu-
ous mode (on/off/con)
– Select N/O operation (n.o.) or N/C operation (n.c.)
individually for each K1/K2
– Specify the number of the reload cycles
– Assign the alarm category I1 (I
or device error individually to K1/K2 (1, r1/ 2, r2).
Set delays:
– Response delay t
on1/ton2
– Starting delay t
– Delay on release t
(LED, relay)
off
Device control parameter setting:
– Select the appropriate parameter for response values:
overcurrent mode (HI), undercurrent mode (Lo) or win-
dow mode (In).
– Enable or disable password protection, change the pass-
word.
– Restore factory settings.
– Service menu SyS blocked
Δn1
) or I2 (I
), relay test
Δn2
TGH1411en/03.2011
19
Menu structure
t > 1,5 s
t < 1,5 s
Operation and setting
t >1,5 s
AL
out
t
SEt
InF
HiS
ESC
t < 1,5 s
t > 1,5 s
20
ESC
TGH1411en/03.2011
Operation and setting
Parameter settings
An example is given here on how to change the alarm response value I1 (I
It is presumed that the option overcurrent (HI) has been selected in the SEt/I
12 menu (factory setting). Proceed as follows:
1. Press the MENU/Enter key for more than 1.5 seconds. The flashing short
symbol AL appears on the display.
2. Confirm with Enter. The parameter response value > I2 flashes, in addition the associated overcurrent value > 30 mA appears.
3. Use the Down key to select the parameter response value I1. The
parameter > I1 flashes, in addition the associated percentage value for
prewarning 50 % of I2 appears.
4. Confirm with Enter. The current value for prewarning appears on the
flashing display.
5. Use the Up or Down key to set the appropriate prewarning value. Confirm with Enter. I1 flashes.
6. You can exit the menu by:
– pressing the Enter key for more than 1.5 seconds to reach the next
higher level or
– selecting the menu item ESC and confirming with Enter to reach the
next higher level.
The currently active segments are flashing! In the figures below,
the segments where device settings can be carried out are highlighted by an oval. The menu mode can be reached by pressing
the MENU key for more than 1.5 seconds.
Δn1
).
5.5.2 Changeover from overcurrent to und ercu rre nt mo de o r to w indow mode
The operating mode can be changed in the SEt/I 12 menu using the parameters HI, Lo and In. By default, overcurrent operation (HI) is set. Refer to page 27
for a detailed description on how to change over to the window mode.
TGH1411en/03.2011
21
Operation and setting
5.5.3 Response value setting for overcurrent:
- Response value I2 (overcurrent I
- Response value I1 (overcurrent I
- Hysteresis (Hys) of the response values I
Δn2
Δn1
)
)
, I
Δn1
Δn2
Increasing the response value I2 (alarm overcurrent)
Increasing the response value I1 (prewarning overcurrent).
1x
Setting the hysteresis of the response value
2x
22
TGH1411en/03.2011
Operation and setting
5.5.4 Setting the fault memory and alarm relay operating mode
Setting the fault memory to con mode
Setting the alarm relay K1 to N/O operation (n.o.)
1x
Setting the number of reload cycles
3x
TGH1411en/03.2011
2x
>1,5 s
23
Operation and setting
5.5.5 Assigning alarm categories to the alarm relays
Overcurrent, undercurrent and device-related errors of the residual current
monitor can be assigned to the alarm relays K1 (r1, 1) and K2 (r2, 2). By default,
the alarm relays K1 and K2 signal prewarning and alarm in case of overcurrent
and device-related errors.
Alarm relay K1: Deactivating the category device error
4x
3x
>1,5 s
Alarm relay K1: Deactivating the category response value I1
24
4x
1x
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3x
>1,5 s
Operation and setting
Alarm relay K1: Activating the category response value I2
4x
2x
Alarm relay K1: Deactivating the category "Alarm by device test"
4x
3x
When an alarm relay (K1/K2) has been deacti vated in the
menu, an alarm will not be signalled by the respective
changeover contact! An alarm will only be indicated by
the respective alarm LED (AL1/AL2)!
3x
>1,5 s
3x
>1,5 s
TGH1411en/03.2011
25
Operation and setting
5.5.6 Set the time delays
The following delays can be set:
Response delay t
Starting delay t (0...10 s) when the device is being started
Common delay on release t
relevant when the fault memory M is deactivated.
(0...10 s) for K1, and t
on1
(0...99 s) for K1, K2. The setting t
off
(0...10 s) for K2
on2
is only
off
The operating steps for the setting of the response delay t
delay t are illustrated by way of example.
Setting the response delay t
on1
Setting the starting delay t
2x
26
and the starting
on1
3x
>1,5 s
2x
>1,5 s
TGH1411en/03.2011
Operation and setting
5.5.7 Changing from overcurrent operation to window operation
Use this menu item to set whether the response values of the device apply to
overcurrent (HI) or undercurrent operation (Lo). In addition, window operation (In) can be selected.
2x
>1,5 s
5.5.8 Factory setting and password protection
Use this menu to activate the password protection, to change the password
or to deactivate the password protection. In addition, you can reset the device
to its factory settings.
a) Activating the password protection
1x
TGH1411en/03.2011
2x
>1,5 s
27
b) Changing the password
1x
c) Deactivating the password protection
1x
Operation and setting
2x
>1,5 s
2x
>1,5 s
28
TGH1411en/03.2011
Operation and setting
5.5.9 Restoring factory settings
2x
....
5.5.10 Device information query (Example)
This function is used to query the software (1.xx) version. After activating this
function, data will be displayed as a scrolling text. Once one pass is completed
you can select individual data sections using the Up/Down keys.
.... ....
5.5.11 History memory query
The history memory can be selected via the menu HiS. Use the Up and Down
keys to view the next display. If Clr and M is flashing, the history memory can
be cleared by pressing the Enter key.
TGH1411en/03.2011
29
Operation and setting
5.6 Commissioning
Prior to commissioning, check proper connection of the residual current monitor.
5.7 Factory setting
30
Response value overcurrent I1 (prewarning)
Response value overcurrent I2 (alarm)
Hysteresis:
Fault memory M:
Operating mode K1/K2
Starting delay:
Response delay:
Delay on release:
Password:
15 mA (50 % of I2)
30 mA
15 %
activated (on)
N/C operation (n.c.)
t = 0.5 s
t
= 1 s
on1
t
= 0 s
on2
t
= 1 s
off
0, deactivated (Off)
TGH1411en/03.2011
6. Technical data
6.1 Data in tabular form
( )* = factory setting
Insulation coordination acc. to IEC 60664-1/IEC 60664-3
Rated insulation voltage ....................................................................................................................................... 250 V
Rated impulse voltage/pollution degree........................................................................................................2.5 kV / III
Protective separation (reinforced insulation) between:..................................................................................................
........................................................................................................... (A1, A2) - (k/l, T/R) - (11, 12, 14) - (21, 22, 24)
Voltage test according to IEC 61010-1 ............................................................................................................... 2.21 kV
Supply voltage
RCMA420-D-1:
Supply voltage U
Frequency range U
RCMA420-D-2:
Supply voltage U
Frequency range U
Power consumption ............................................................................................................................................. ≤3 VA
Measuring circuit
External measuring current transformer .....................................................................W20AB, W35AB, W60AB series
Rated insulation voltage (measuring current transformer) ................................................................................. 800 V
Operating characteristic acc. to IEC 62020 and IEC/TR 60755 ........................................................................... Type B
Frequency range .......................................................................................................................................... 0...2000 Hz
Measuring range AC ......................................................................................................................................... 0...1.5 A
Measuring range DC ..................................................................................................................................... 0...600 mA
Relative uncertainty for f ≤ 2 Hz or ≥ 16 Hz .................................................................................................. 0...-35 %
Relative uncertainty for f >2 Hz...<16 Hz ......................................................................................... -35 %...+100
%Operating uncertainty ................................................................................................................................... 0...35 %
Response values
Rated residual operating current I
............................................................................................................... AC 16...72 V / DC 9.6...94 V
s
...................................................................................................................................... 42...460 Hz
s
............................................................................................................................... AC/DC 70...300 V
s
...................................................................................................................................... 42...460 Hz
s
(prewarning, AL1) .............................................. 50...100 % x I
Δn1
Δn2
, (50 %)*
TGH1411en/03.2011
31
Technical data
Rated residual operating current I
(Alarm, AL2) ............................................................... 10...500 mA (30 mA)*
Δn2
Hysteresis .......................................................................................................................................... 10...25 % (15%)*
Specified time
Starting delay t ...................................................................................................................................... 0...10 s (0.5 s)*
Response delay t
Response delay t
Delay on release t
Operating time t
Operating time t
Response time t
Recovery time tb ............................................................................................................................................. ≤ 300 ms
(alarm) .................................................................................................................... 0...10 s (0 s)*
on2
(prewarning) .......................................................................................................... 0...10 s (1 s)*
on1
.................................................................................................................................. 0...99 s (1 s)*
off
at IΔn = 1 x I
ae
at IΔn = 5 x I
ae
.............................................................................................................................. tan = tae + t
an
.......................................................................................................... ≤ 180 ms
Δn1/2
............................................................................................................ ≤ 30 ms
Δn1/2
on1/2
Displays, memory
Display range, measured value AC ................................................................................................................... 0...1.5 A
Display range, measured value DC ............................................................................................................... 0...600 mA
Error of indication ......................................................................................................................... ±17.5 % / ± 2 digit
Measured-value memory for alarm value ..................................................................... data record measured values
Password ........................................................................................................................................... off / 0...999 (off)*
Fault memory alarm relay ........................................................................................................................ on / off (on)*
Inputs/outputs
Cable length for external test / reset button...................................................................................................0…10 m
Cable lengths for measuring current transformers
Connection WX... (see ordering information on page 35)................................................... 1 m / 2.5 m / 5 m / 10 m
or alternatively: single wire 6 x 0.75 mm
2
....................................................................................................... 0...10 m
Switching elements
Number of switching elements ............................................................................................. 2 x 1 changeover contact
Operating principle ............................................................................N/C operation/N/O operation (N/C operation)*
Electrical service life under rated operating conditions ................................................... 10 000 switching operations
Contact data acc. to IEC 60947-5-1
Utilization category.............................................................AC-13..........AC-14 .......DC-12 .......... DC-12.......... DC-12
Rated operational voltage....................................................230 V ...........230 V .......... 24 V ........... 110 V ...........220 V
Rated operational current........................................................5 A...............3 A............ 1 A ............0.2 A ............ 0.1 A
Minimum contact load ............................................................................................................. 1 mA at AC / DC ≥ 10 V
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TGH1411en/03.2011
Technical data
Environment/EMC
EMC ................................................................................................................................................................. IEC 62020
Operating temperature ......................................................................................................................... -25 ºC...+55 ºC
Classification of climatic conditions IEC 60721
Stationary use (IEC 60721-3-3) ........................................................3K5 (except condensation and formation of ice)
Transportation (IEC 60721-3-2) ........................................................2K3 (except condensation and formation of ice)
Storage (IEC 60721-3-1) ...................................................................1K4 (except condensation and formation of ice)
Classification of mechanical conditions acc. to IEC 60721:
Stationary use (IEC 60721-3-3) .............................................................................................................................. 3M4
Transportation (IEC 60721-3-2) .............................................................................................................................. 2M2
Storage (IEC 60721-3-1) ......................................................................................................................................... 1M3
Connection
Connection type.......................................................................................................... screw-type terminals
Connection properties:
rigid/ flexible/ conductor sizes .......................................................................... 0.2...4 / 0.2...2.5 mm
2
/ AWG 24...12
Multi-conductor connection (2 conductors with the same cross section):
rigid, flexible ............................................................................................................................. 0.2...1.5 / 0.2...1.5 mm
Stripping length ............................................................................................................................................... 8...9 mm
Tightening torque....................................................................................................................................... 0.5...0.6 Nm
Connection type............................................................................................................ push-wire terminals
Connection properties:
Rigid ............................................................................................................................... 0.2...2.5 mm
Flexible without ferrules................................................................................................. 0.2...2.5 mm
Flexible with ferrules ...................................................................................................... 0.2...1.5 mm
2
( AWG 24...14)
2
( AWG 24...14)
2
( AWG 24...16)
Stripping length .................................................................................................................................................. 10 mm
Opening force........................................................................................................................................................... 50 N
Test opening, diameter....................................................................................................................................... 2.1 mm
Other
Operating mode ........................................................................................................................... continuous operation
Position of normal use.......................................................................................................................... display-oriented
Degree of protection, internal components (IEC 60529) .........................................................................................IP30
Degree of protection, terminals (IEC 60529)............................................................................................................IP20
Enclosure material ....................................................................................................................................polycarbonate
Flammability class .............................................................................................................................................UL94V-0
2
TGH1411en/03.2011
33
Technical data
DIN rail mounting acc. to................................................................................................................................. IEC 60715
Screw fixing ......................................................................................................................... 2 x M4 with mounting clip
Software version .......................................................................................................................................... D242 V1.2x
Weight ............................................................................................................................................................... ≤ 150 g
( )* = factory setting
Residual operating current ranges of the different measuring current transformers
Ansprechdifferenz-
strom-Bereiche
10 mA...500 mA W20AB
30 mA...500 mA
Typ e
W35AB
W60AB
6.2 Standards, approvals and certifications
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TGH1411en/03.2011
Technical data
6.3 Ordering information
RCMA420-D-1 RCMA420-D-2
Response range I
Rated frequency 0...2000 Hz 0...2000 Hz
Supply voltage Us*
Art. No.
(B 7... = push-wire terminal)
External measuring current transformers
Type Inside diameter (mm) Art. No.
W20AB 20 B 9808 0008
W35AB 35 B 9808 0016
W60AB 60 B 9808 0026
Measuring current transformer connecting cable
Type Le ng th (m) Art. No.
WX-100 1 B 9808 0503
WX-250 2,5 B 9808 0504
WX-500 5 B 9808 0505
WX-1000 10 B 9808 0506
n
Δ
*Absolute values of the voltage range
10...500 mA 10...500 mA
DC 9.6...94 V /
AC 42...460 Hz, 16...72 V
B 7404 3001
B 9404 3001
DC 70...300 V /
AC 42...460 Hz,
70...300 V
B 7404 3002
B 9404 3002
Accessories RCMA420
Mounting clip for screw fixing (1 piece per device) ................................................................................. B 9806 0008
Measuring current transformers accessories
Snap-on mounting for DIN rail: W20AB /W35AB ................................................................................... B 9808 0501
Snap-on mounting for DIN rail: W60AB .................................................................................................... B 9808 0502
TGH1411en/03.2011
35
Technical data
6.4 Error codes
Should, contrary to all expectations, a device error occur, error codes will appear on the display. Typical error codes are described below:
Error code Meaning:
Fault CT connection monitoring
Appropriate action:
E.01
E.02
E....
Check CT connection for short-circuit or interruption. After eliminating the fault, the error
code will be automatically deleted.
Fault CT connection monitoring
during manual self test.
Appropriate action:
Check CT connection for short-circuit or interruption. After eliminating the fault and anew
self-test or anew device start, the error code will
be automatically deleted.
Appropriate action when error codes > 02
occur:
Appropriate action:
Carry out a reset. Reset the device to factory
setting. After eliminating the fault, the error
code will be automatically deleted.
If the fault continues to exist, please contact the
BENDER Service.
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TGH1411en/03.2011
INDEX
A
Adjustable parameters, list 17
Automatic self test 10
C
Connection of an additional cascaded meas-
uring current transformer
15
D
Delay on release toff 11
Deleting the fault alarms 16
Device features 9
Display elements in use 15
Display in standard mode 18
E
ENTER key 16
Error codes 36
Example of parameter setting 21
F
factory setting 12, 30
Function 9
Functional faults 10
I
Installation and connection 13
K
K1/K2: assignment alarm category 17
L
LED Alarm 1 lights 16
LED Alarm 2 lights 16
M
Manual self test 10
Manual, target group 5
Menu
- AL (response values)
- HiS (history memory for the first
alarm value)
- InF (hard and software version) 18
- out (output control) 17
- Set (device control 18
- t (timing check) 18
Menu structure, overview 17
17
18
N
Notes for the user 5
O
Operating elements, function 16
Operation and setting 15
Ordering information 35
TGH1411en/03.2011
37
P
Parameter query and setting, overview 19
Parameter setting
- Activating or deactivating the password protection
- Assigning alarm categories to the
alarm relays
- Changeover from overcurrent operation to window operation
- Set response values 22
- Set the time delays 26
Password protection 12
R
Reset button 16
Residual current monitoring in window dis-
criminator mode
Residual operating current ranges of t he dif-
ferent measuring current transformers
34
Response delay ton 11
S
Select the appropriate parameter for re-
sponse values
-
19
Set response values
- Hysteresis
- Overcurrent (> I) 22
Setting the number of reload cycles 23
Starting delay t 11
Starting the menu mode 16
27
24
27
12
22
T
Technical data 31
Test button 16
W
Window operation 27
Wiring diagram 14
Work activities on electrical installations 7
38
TGH1411en/03.2011
Dipl.-Ing. W. Bender GmbH & Co. KG
Londorfer Str. 65 • 35305 Grünberg • Germany
Postfach 1161 • 35301 Grünberg • Germany
Tel.: +49 6401 807-0
Fax: +49 6401 807-259
E-Mail: info@bender-de.com
Web: http://www.bender-de.com
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