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.