Compact Electric CDMRE 100 User manual

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LINE MONITORING AND DECOUPLING PROTECTION
CDMRE 100
User manual

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Contents
1. GENERAL INFORMATION............................................................................................................. 3
1.1. Safety instructions....................................................................................................................... 3
1.2. Description of the device ............................................................................................................ 4
1.3. Specifications............................................................................................................................... 5
1.4. Front view and connection allocation......................................................................................... 6
1.5. Commissioning ............................................................................................................................ 7
2. OPERATION.................................................................................................................................. 8
2.1. General operation ....................................................................................................................... 8
2.2. Changing the parameters............................................................................................................ 9
3. MENU NAVIGATION AND SETTINGS.......................................................................................... 10
3.1. Measured values ....................................................................................................................... 10
3.2. 10-minute average values ......................................................................................................... 10
3.3. Information................................................................................................................................ 10
3.4. General 1 ................................................................................................................................... 11
3.5. General 2 ................................................................................................................................... 12
3.6. General 3 ................................................................................................................................... 13
3.7. U> overvoltage stage 1.............................................................................................................. 14
3.8. U>> overvoltage stage 2............................................................................................................ 14
3.9. U< undervoltage stage 1 ........................................................................................................... 14
3.10. U<< undervoltage stage 2............................................................................................ 14
3.11. U10> 10-minute average - voltage quality .................................................................. 15
3.12. f> overfrequency stage 1............................................................................................. 16
3.13. f>> overfrequency stage 2........................................................................................... 16
3.14. f< underfrequency stage 1........................................................................................... 16
3.15. f<< underfrequency stage 2......................................................................................... 16
3.16. 17
3.17. Vk> vector shift............................................................................................................ 17
3.18. Event log ...................................................................................................................... 18
3.19. Test menu .................................................................................................................... 19
4. CDMRE-100 COMMUNICATION SOFTWARE ............................................................................. 20
4.1. Installation................................................................................................................................. 21
4.2. Connection ................................................................................................................................ 21
4.3. Parameterization....................................................................................................................... 23
4.4. Event log.................................................................................................................................... 24
5. WIRING EXAMPLE...................................................................................................................... 25

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1. GENERAL INFORMATION
1.1. Safety instructions
CDMRE-100 is a voltage and frequency monitoring relay for mains and system protection (GS protec-
tion). It is intended for disconnecting the feeding generators and systems (e.g.: heating power, wind
power, hydroelectric power and photovoltaic systems) in case of impermissible voltage and frequency
values, mains-side faults or power failures from the public supply mains using a coupling switch.
CDMRE-100 is equipped with a separate auxiliary voltage input.
Only expert electricians may install and commission the device. An expert electrician can identify and
avoid possible dangers independently on the basis of his/her technical training, knowledge and expe-
rience. The expert electrician is specially trained for the working environment in which he/she works
and knows the relevant standards and regulations.
CDMRE-100 is built according to the latest technological advancements and the recognized safety reg-
ulations. Nevertheless, improper use may result in danger for the user, third parties or devices and
material assets.
In order to maintain the functional safety of the GS protection, the feedback contacts of the two con-
tactors must be monitored by CDMRE-100 (see wiring example on page 25). The feedback contacts can
be designed as NC contacts as well as NO contacts. The respective version can be parameterized in the
"General 1" menu of CDMRE-100.
Danger to life due to electric current!
If live parts are touched, there is an immediate danger to life due to the electric current. Only expert
electricians may carry out work on electrical systems as well as any activities related to installation,
commissioning as well as those during the operation of the device.
Use this device only:
-for the intended purposes
-in a technically safe condition
-in compliance with the accident prevention rules and regulations applicable at the place
of use
Immediately rectify all faults that could affect safety.
Do not make any unauthorized modifications and use only spare parts and accessories sold or
recommended by the manufacturer of the devices.
In case of obvious damage, do not continue to use the device.
If the device has been subjected to overvoltage or short-circuit current, check it and replace it
if necessary.
This manual has been prepared with the utmost care. However, errors and mistakes cannot be com-
pletely ruled out. Compact Electric does not assume any liability for personal injuries or damage to
property resulting from errors or mistakes in this manual.
Always keep this user manual in the immediate vicinity of the device.

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1.2. Description of the device
The CDMRE-100 digital mains monitoring relay is equipped with 10 monitoring functions:
U> ..... overvoltage stage 1
f> ..... overfrequency stage 1
U>> ..... overvoltage stage 2
f>> ..... overfrequency stage 2
U< ..... undervoltage stage 1
f< ..... underfrequency stage 1
U<< ..... undervoltage stage 2
f<< ..... underfrequency stage 2
U10> .... 10-minute average overvoltage
Vk> ..... vector shift
The monitoring functions can be individually enabled and can also be extended using the following
settings:
Blocking time (t-blocking)
Feedback contacts of the circuit breakers (auxiliary contacts)
Frequency/voltage switching logic (fU logic)
Short interruption (KU)
Isolated mains detection with outer conductor voltage (INE-LL)
Phase sequence monitoring (P-sequence)
For explanation of individual functions, see section 3 MENU NAVIGATION AND SETTINGS.
CDMRE-100 has a redundant design that serves in the protection of machines and personnel. Two
processors simultaneously measure and calculate the measured values and monitor each other. In the
event of an error or inconsistencies in the measured values, they report a fault to relays K1 and K2.
Furthermore, inputs are available for the auxiliary contacts of circuit breakers, which monitor the func-
tion of the circuit breakers as well as a configurable blockade input.
The event log provides space for 100 error messages with a time stamp. Parameter changes are also
stored in the event log.
A code lock with a 4-digit code can be activated as protection against unauthorized changes to the
settings. This code is requested before each parameter change.

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1.3. Specifications
Technical data
Measurement
Relay (see figure 1 for the load limit curve)
Nominal voltage UN
400 V / 230 V / 100 V / 57 V
Maximum switching capacity
1250 VA / 150 W
Measuring range UM
40 V - 300 V (L-N)
70 V - 520 V (L-L)
Maximum switch voltage
250V AC / 125V DC
Overload resistance UL
200% UN
Maximum switch current
5 A @ 250 V AC / 30 V DC
Frequency range fM
14 Hz - 70 Hz
0.2 A @ 125 V V DC
Measurement accuracy
Service life
105switching cycles
Voltage
< 0.2%
Insulation
Voltage < 45 Hz & > 55 Hz
< 1%
Measuring circuit - auxiliary
voltage
4 kV
Frequency
0.01 Hz
Measuring circuit - relay con-
tacts
4 kV
Temperature dependency
Standards
Voltage
< 0.02% / °C
Safety
EN 61010
Frequency
No dependency
EMC interference immunity
EN 61000-6-2
Supply
EMC interference emission
EN 61000-6-3 + A1
Auxiliary voltage AC - UH
85 V - 265 V @ 50 Hz
ÖVE (Austrian Federation for
Electrical Engineering)
ÖVE 8001-4-712
Auxiliary voltage DC - UH
85 V - 370 V
VDE
VDE-AR-N 4105
Power consumption
Maximum 2 VA
General specifications
Display:
LCD 102 x 64 pixels with
the background lighting
Installation type:
Top hat rail installation
Memory:
100 events
Weight:
Approximately 250 g
Blockade response time:
a maximum of 50 ms
IP class/interface
IP 30 / RS232
Dimensions (WxHxD):
107 x 90 x 58 mm
Operating temperature:
-20 … +70 °C
Figure 1 - load limit curve of output relays

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1.4. Front view and connection allocation
Figure 2 - front view
1. RS232/serial interface
2. Connection allocation, see figure 3
3. Escape key
4. Up key
5. Down key
6. Enter key
Figure 3 - connection allocation
1
3
4
5
6
2
2

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1.5. Commissioning
When commissioning, ensure that the measuring voltages N, L1, L2, L3 and the auxiliary voltage UH
are deenergized. CDMRE-100 can be operated on 2-, 3- or 4-conductor mains; in case of 2-conductor
mains, the CDMRE-100 must be set to 4-wire (star) mains; in case of 3- and 4-conductor mains, both
4-wire (star) and 3-wire (delta) can be set since the device has an internal star connection for the
neutral conductor.
Depending on the mains, one of the three connection diagrams must be used:
Figure 4 - connection with the 2-conductor mains
Figure 5 - connection with the 3-conductor mains
Figure 6 - connection with the 4-conductor mains

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2. OPERATION
2.1. General operation
You can use the Up and Down keys to navigate through the menus; Menu 1 is always shown when the
Escape key is pressed:
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY
UP KEY
UP KEY
DOWN KEY
UP KEY
DOWN KEY

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2.2. Changing the parameters
In order to change the parameters, press the Enter key in any menu and select the desired parame-
ters using the Up/Down key. Press the Enter key again to select the parameter and change the corre-
sponding value using the Up/Down key. Then confirm the change using the Enter key or discard it us-
ing the Escape key. If you do not enter any value for parameter change for 30 seconds, the menu re-
turns to the measured value display (applicable for all menu items, including the event log).
DOWN KEY
ENTER KEY
ENTER KEY
ENTER KEY
ESCAPE KEY
ESCAPE KEY
ESCAPE KEY
ESCAPE KEY
UP KEY
ESCAPE KEY

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3. MENU NAVIGATION AND SETTINGS
3.1. Measured values
The 1st menu item shows the instantaneous frequency, as well as all
4-wire (star) and 3-wire (delta) voltages.
This view is automatically shown after commissioning the device. An
overshooting/undershooting of a set limit value is indicated in the meas-
ured value menu by the inverted display of the violated limit value. In
addition, the "=" sign changes to "<", "<<", ">" or ">>" depending on the
limit value violation.
3.2. 10-minute average values
The 2nd menu item shows the current 10-minute average values. Depending
on whether 4-wire (star) or 3-wire (delta) voltages are measured, the
10-minute average value L1, L2 and L3 is shown for star or that of L12, L23
and L31 is shown for delta. If a limit value is overshot, the violated limit value
is shown inverted and the “=” sign changes to the “>” sign.
3.3. Information
The 3rd menu item shows general information about the device. The type,
the software version and the serial number can be read here.

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3.4. General 1
The 4th menu item shows the parameterization of general settings 1.
Mains: This selection defines whether the overvoltage and undervolt-
age stages are applicable for the 4-wire (star) or 3-wire (delta)
voltages.
t-Block: The blocking time comes into effect after a mains fault or after
a failure of the auxiliary voltage. The generator system may be
switched on again only if the mains is within the permissible
limits for switching on for a certain period of time (blocking
time). The setting range of the blocking time is 0 s to 900 s.
Aux cont: Here, you can configure the setting for the auxiliary contacts
of circuit breakers. Configurable parameters are N.O. (Normaly
Open contacts), N.C. (Normaly Closed contacts) and OFF. If NC
or NO contacts have been selected, it is checked, after actuat-
ing the relays, whether the auxiliary contacts are switched ac-
cordingly. If auxiliary contacts do not switch within a defined
time range, the relay tries to switch itself on 3 times (after a
pause of 10 s in each case). A fault is notified if the relay fails
to switch on all three times.
To reset an auxiliary contact fault, either restart CDMRE-100 or
enter the number "69" in the "General 3" menu in the "EvtLog
Cl" line (Reset).
If only one of the two relays is used and connected to a circuit
breaker, and the auxiliary contacts are set to N.O. or N.C., the
unused auxiliary contact input must be connected to the cor-
responding unused relay. In the N.C. setting, ground and auxil-
iary contact 2 must be connected to relay outputs 21 and 22
and in the N.O. setting, ground and auxiliary contact 2 must be
connected to relay outputs 21 and 24 (see figure 7).
Language: You can select GER (German) or ENG (English).
Figure 7 –Use of only one auxiliary contact

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3.5. General 2
The 5th menu item shows the parameterization of general settings 2.
fU logic: If the frequency/voltage switching logic is activated, the switch-
on is possible only if the frequency and all voltages must be sim-
ultaneously within the switching points +/- hysteresis (of U>, U<
and f>, f<) after an auxiliary voltage failure or after each trigger-
ing of U>,U< or f>, f<.
If the frequency/voltage switching logic is deactivated, the fre-
quency and all voltages must be only within the switching points
after an auxiliary voltage failure; hystereses are not considered.
KU: A short interruption means a limit value violation of the mains
voltage or mains frequency over a period of a maximum of 3 s.
If the mains is within the tolerance range again after 3 s, the
blocking time is only 5 s; else, the set blocking time is active (see
section 3.4 General 1).
INE-LL: For single-phase inverters, three-phase monitoring of the exter-
nal conductor voltage may be used as a criterion for isolated
mains detection.
If this function is activated, U>> and U<< (stage 2) are activated
for the phase voltages.
This function can be activated only if the mains is set to star (see
section 3.4 General 1).
P-SEQ: This function monitors the phase sequence (direction of rota-
tion) of L1, L2, L3 and issues an error message or a trigger if this
is not observed.
Unom: The specification of the nominal voltage influences the starting
value of the 10-minute average value, since this always assumes
the value of the nominal voltage after commissioning of the de-
vice.
In addition, the frequency triggering functions and the vector
shift are blocked as soon as all voltages are <70% nominal volt-
age.
The nominal voltage is also influenced by the type of measure-
ment (see General 1 - mains):
o4-wire Mains (star) and Unominal 400 V => 230 V nominal voltage
o3-wire Mains (delta) and Unominal 400 V => 400 V nominal voltage
o4-wire Mains (star) and Unominal 100 V => 57 V nominal voltage
o3-wire Mains (delta) and Unominal 100 V => 100 V nominal voltage

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3.6. General 3
The 6th menu item shows the parameterization of general settings 3.
Code: You can set the activation code here. When you set the code
“0000”, the code lock is deactivated.
The code lock can be configured and reset only on CDMRE-100
(by entering “0 0 0 0”). When a code is set, it is always requested
before changing a parameter. You can view the measured val-
ues, parameters and the event log even without entering a code.
The "Current code" input field is implemented in the communi-
cation program so that parameters can still be transferred to the
CDMRE via the communication program when the code lock is
switched on. The entry of the current code via this field is valid
until the "Receive parameters" menu is called up or the commu-
nication program is restarted.
Date/time: You can view and manually set the date and time here.
When “sending parameters" using the PC software via the serial
interface, the time and date are automatically transferred from
the PC or laptop.
Block: The blockade input has the functions "Switch-on blockade NO
(Normally Open)", "Switch-on blockade NC (Normally Closed)",
"Trigger blockade" and "Off".
If the "Switch-on blockade NO" is active, the relay is prevented
from being switched on as long as a connection is established
between inputs "B" and "". After the connection between "B"
and "" has been opened (if all connection conditions are ful-
filled), the relay is switched on after the set blocking time has
elapsed.
If the "Switch-on blockade NC" is active, the relay is prevented
from being switched on as long as a connection between inputs
"B" and "” is open. After the connection between "B" and ""
has been closed (if all connection conditions are fulfilled), the
relay is switched on after the set blocking time has elapsed.
If the “trigger blockade" is active, the relay always remains en-
ergized as long as a connection is established between inputs
"B" and "".
EvtLog Cl: The event log can be deleted by entering the number "14” in the
"EvtLog Cl" line. By entering the number "69" in this line,
CDMRE-100 is restarted (reset).

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3.7. U> overvoltage stage 1
The 7th menu item shows the parameterization of U> overvoltage stage 1.
Trip: Trip - activate/deactivate the function.
Trip V: Switching point –voltage value (in percentage of the nominal
voltage) that leads to a trigger when overshot.
Hyster: Hysteresis - undershooting of the switching point minus the
hysteresis (in percentage of the nominal voltage) leads to a re-
lapse.
Delay: Trigger time - duration for which the switching point must be
overshot so that it leads to a trigger.
Return: Relapse time - duration for which the switching point must be
undershot so that it leads to a relapse.
3.8. U>> overvoltage stage 2
The 8th menu item shows the parameterization of U>> overvoltage stage 2.
Settings:
see section 3.7 U> overvoltage stage 1
3.9. U< undervoltage stage 1
The 9th menu item shows the parameterization of U< undervoltage stage 1.
Trip: Trigger - activate/deactivate the function.
Trip V: Switching point –voltage value (in percentage of the nominal
voltage) that leads to a trigger when undershot.
Hyster: Hysteresis - overshooting of the switching point plus the hyste-
resis (in percentage of the nominal voltage) leads to a relapse.
Delay: Trigger time - duration for which the switching point must be
undershot so that it leads to a trigger.
Return: Relapse time - duration for which the switching point must be
overshot so that it leads to a relapse.
3.10. U<< undervoltage stage 2
The 10th menu item shows the parameterization of U<< undervoltage
stage 2.
Settings:
see section 3.9 U< undervoltage stage 1

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3.11. U10> 10-minute average - voltage quality
The 11th menu item shows the parameterization of U10> 10-minute aver-
age - voltage quality.
Trip: Trigger - activate/deactivate the function.
Trip V: Switching point –10-minute average value that leads to a trig-
ger when overshot.
Hyster: Hysteresis - undershooting of the switching point minus the
hysteresis leads to a relapse.
Delay: Trigger time - duration for which the switching point must be
overshot so that it leads to a trigger.
Return: Relapse time - duration for which the switching point must be
undershot so that it leads to a relapse.

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3.12. f> overfrequency stage 1
The 12th menu item shown the parameterization of f> overfrequency stage 1.
Trip: Trigger - activate/deactivate the function.
Trip f: Switching point –frequency value that leads to a trigger when
overshot.
Hyster: Hysteresis - undershooting of the switching point minus the hys-
teresis leads to a relapse.
Delay: Trigger time - duration for which the switching point must be
overshot so that it leads to a trigger.
Return: Relapse time - duration for which the switching point must be un-
dershot so that it leads to a relapse.
3.13. f>> overfrequency stage 2
The 13th menu item shown the parameterization of f>> overfrequency stage 2.
Settings:
see section 3.12 f> overfrequency stage 1
3.14. f< underfrequency stage 1
The 14th menu item shown the parameterization of f< underfrequency stage 1.
Trip: Trigger - activate/deactivate the function.
Trip f: Switching point –frequency value that leads to a trigger when un-
dershot.
Hyster: Hysteresis - overshooting of the switching point plus the hystere-
sis leads to a relapse.
Delay: Trigger time - duration for which the switching point must be un-
dershot so that it leads to a trigger.
Return: Relapse time - duration for which the switching point must be
overshot so that it leads to a relapse.
3.15. f<< underfrequency stage 2
The 15th menu item shown the parameterization of f<< underfrequency stage 2.
Settings:
see section 3.14. f< underfrequency stage 1

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3.16.
3.17. Vk> vector shift
The 17th menu item shows the parameterization of Vk> vector shift.
Trip: Trigger - activate/deactivate the function.
Angle: Switching point - phase angle, which must occur at least during a
vector shift so that it leads to a trigger.
Logic: Trigger logic - if L1|2|3 are set, the vector shift trigger is single
phase sensitive; if L1+2+3 are selected, the switching point for all
three phases must be overshot.
tBlock: Blockade time - the vector shift trigger is blocked for the set block-
ing time after the auxiliary voltage has been switched on and after
the relay has relapsed to the OK state.
tPulse: Pulse time - the duration of the vector shift trigger signal is varia-
ble and can be set using the tPulse parameter.

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3.18. Event log
The 18th menu item shows the event log.
The first page in the event log shows the current triggers. If there are no
errors, the backlight is green and the display is empty.
During a power failure, the symbol for the corresponding trigger is shown
here (U<<, U<, U>>, U>, U10>, f<<, f<, f>, f>>, Vk>) and, if active, the block-
ing time. In this case, the backlight is orange. When the mains is within the
set limits again, it is switched on again after the blocking time has elapsed.
If the frequency/voltage switching logic (see section 3.5 General 2) is acti-
vated and CDMRE-100 is triggered due to a limit value violation, "fU-L" (fU
logic) and the respective violated limit value are displayed.
If the auxiliary processor fails or an internal error occurs, the “INTERNAL
FAIL" message appears in the event log and the backlight changes to red. If
the main processor, which also controls the display, fails, only the backlight
is red and the display is not defined.
You can press the Enter key and then the Up or Run keys to navigate
through the 100 events. The trigger and relapse events consist of two
pages, e.g. 001A and 001B, while events that signal a parameter change
have only one page, since there are no measurement results in this case.

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PHONE: + 43 / 1 / 815-12-71-0 or + 43 / 1 / 815-51-74-0
FAX: + 43 / 1 / 813-64-21-21
Homepage: http://www.compactelectric.at
CDMRE100e_man_A5.docx
3.19. Test menu
You can enter the Test menu by simultaneously pressing the Up and Down
keys for at least 3 seconds.
The trigger time of the feedback contacts is measured and displayed here.
For this purpose, relays K1 and K2 are switched to the trigger position and
the total time required by the auxiliary contacts H1 and H2 for the change-
over is measured.
The prerequisite is that relays K1 and K2 were previously in the OK state,
otherwise the measured time will be 0 s.
If the auxiliary contacts are deactivated, the “Auxiliary contact off” mes-
sage is shown on the display. Relays K1 and K2 still switch to the trigger
position.
Press any key to return to the normal mode.

compact electric CDMRE 100 Manual Page 20
1230 Vienna, Großmarktstraße 22
PHONE: + 43 / 1 / 815-12-71-0 or + 43 / 1 / 815-51-74-0
FAX: + 43 / 1 / 813-64-21-21
Homepage: http://www.compactelectric.at
CDMRE100e_man_A5.docx
4. CDMRE-100 COMMUNICATION SOFTWARE
The serial interface (RS232) offers a convenient option for parameterization and logging of the setting
values of the CDMRE-100 relay.
The connection requires a serial interface or a USB/RS232 converter and a PC or laptop with Windows
XP/Vista/7/10.
The CDMRE-100 communication software is available at our homepage
http://www.compactelectric.at.
Figure 8 - CDMRE-100 communication software (1st Page)