Circutor RECmax-CVM 2-pole User manual

INSTRUCTION MANUAL
Earth leakage circuit breaker with automatic reclosing and
measurement system
RECmax-CVM
(M175B01-03-22A)

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RECmax-CVM
Instruction Manual

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Instruction Manual
RECmax-CVM
SAFETY PRECAUTIONS
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a specific point.
Follow the warnings described in this manual with the symbols shown below.
If you must handle the unit for its installation, start-up or maintenance, the following should be
taken into consideration:
Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the
unit. In particular, handling with voltages applied may result in electric shock, which may cause death
or serious injury to personnel. Defective installation or maintenance may also lead to the risk of fire.
Read the manual carefully prior to connecting the unit. Follow all installation and maintenance in-
structions throughout the unit’s working life. Pay special attention to the installation standards of the
National Electrical Code.
Refer to the instruction manual before using the unit
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can result
in injury or damage to the unit and/or installations.
CIRCUTOR, SA reserves the right to modify features or the product manual without prior notification.
DISCLAIMER
CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set
out in this instruction manual without prior notice.
CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device specifica-
tions and the most updated manuals.
www.circutor.com
CIRCUTOR, recommends using the original cables and accessories that are supplied
with the device.

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CONTENTS
SAFETY PRECAUTIONS .........................................................................................................................................................3
DISCLAIMER ..........................................................................................................................................................................3
CONTENTS.............................................................................................................................................................................4
REVISION LOG .......................................................................................................................................................................6
SYMBOLS...............................................................................................................................................................................6
1. VERIFICATIONS UPON RECEPTION..................................................................................................................................7
2. DESCRIPTION OF THE PRODUCT.....................................................................................................................................7
3. INSTALLING THE DEVICE.................................................................................................................................................9
3.1.- PRELIMINARY RECOMMENDATIONS ........................................................................................................................9
3.2.- INSTALLATION .......................................................................................................................................................10
3.2.1.- MEASUREMENT OF THE EARTH LEAKAGE CURRENT I...........................................................................................10
3.2.2.- MEASUREMENT OF THE PHASE CURRENT.....................................................................................................11
3.2.3.- SAFETY SEAL...................................................................................................................................................11
3.3.- TERMINALS OF THE DEVICE.................................................................................................................................. 12
3.4.- CONNECTION DIAGRAMS....................................................................................................................................... 14
3.4.1.- MEASUREMENT OF SINGLEPHASE NETWORK: RECmax-CVM 2POLE ....................................................... 14
3.4.2.- MEASUREMENT OF THREEPHASE NETWORK: RECmax-CVM 4POLE ........................................................15
3.5.- DISCONNECTION OF THE DEVICE.......................................................................................................................... 16
4. OPERATION ................................................................................................................................................................... 17
4.1.- OPERATING PRINCIPLE .......................................................................................................................................... 17
4.2.- DESCRIPTION OF THE DEVICE ...............................................................................................................................18
4.3.- KEYBOARD FUNCTIONS......................................................................................................................................... 19
4.4.- DISPLAY ................................................................................................................................................................ 20
4.5.- LED INDICATORS.................................................................................................................................................... 21
4.6.- INPUTS .................................................................................................................................................................22
4.7.- OUTPUTS ..............................................................................................................................................................22
4.8.- RESET LEVER AND MANUAL LOCKING..................................................................................................................23
4.9.- NORMAL OPERATING STATUS ...............................................................................................................................23
4.10.- TRIP STATUS ........................................................................................................................................................24
4.10.1.- AUTOMATIC RECLOSING IS POSSIBLE ..........................................................................................................24
4.10.2.- AUTOMATIC RECLOSING IS NOT POSSIBLE..................................................................................................25
5. DISPLAY.........................................................................................................................................................................27
5.1.- NORMAL OPERATING STATUS................................................................................................................................27
5.1.1.- ELECTRICAL PARAMETERS DISPLAY SCREENS ............................................................................................. 29
5.1.2.- COMMUNICATIONS SETTINGS PARAMETERS DISPLAY SCREENS..................................................................34
5.2.- TRIP STATUS .......................................................................................................................................................... 35
5.2.1.- EARTH LEAKAGE PROTECTION TRIP ............................................................................................................. 35
5.2.2.- CIRCUIT BREAKER TRIP ................................................................................................................................. 36
5.2.3.- TRIPPING WITH THE TEST KEY...................................................................................................................... 36
5.2.4.- TRIP DUE TO EXT ON/OFF INPUT .................................................................................................................37
6. CONFIGURATION .......................................................................................................................................................... 38
6.1.- EARTH LEAKAGE PROTECTION ............................................................................................................................. 38
6.1.1.- ACTIVATION DELAY......................................................................................................................................... 38
6.1.2.- SENSITIVITY CURRENT, IN............................................................................................................................ 39
6.2.- AUTOMATIC RECLOSING....................................................................................................................................... 40
6.2.1.- SRD: EARTH LEAKAGE RECLOSING SEQUENCE ............................................................................................ 40
6.2.2.- SRM: CIRCUIT BREAKER RECLOSING SEQUENCE .......................................................................................... 41
6.2.3.- RSTC: PARTIAL METER RESETTING................................................................................................................42
6.2.4.- POLT: CONFIGURATION OF REC LOCKED OUTPUT .........................................................................................42
6.2.5.- FREQ: NOMINAL FREQUENCY ........................................................................................................................43
6.2.6.- FACT: FACTORY CONFIGURATION ...................................................................................................................44
6.3.- RS-485 COMMUNICATIONS: PERIPHERAL NUMBER.............................................................................................44
6.4.- LOCKING THE CONFIGURATION ............................................................................................................................ 45
6.4.1.- PHYSICAL LOCKING ........................................................................................................................................ 45
6.4.2.- PROGRAM LOCKING ....................................................................................................................................... 45
7. RS485 COMMUNICATIONS.......................................................................................................................................... 46
7.1.- CONNECTIONS ....................................................................................................................................................... 46
7.2.- MODBUS PROTOCOL ..............................................................................................................................................47
7.2.1. READ EXAMPLE: Function 0x04. .....................................................................................................................47

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7.2.2. WRITE EXAMPLE: Function 0x05. ....................................................................................................................47
7.3.- MODBUS COMMANDS............................................................................................................................................48
7.3.1. MEASUREMENT VARIABLES .............................................................................................................................48
7.3.2. ENERGY VARIABLES .........................................................................................................................................49
7.3.3. VOLTAGE AND CURRENT HARMONICS. ........................................................................................................... 50
7.3.4. PROTECTION VARIABLES.................................................................................................................................. 51
7.3.5. DELETING PARAMETERS..................................................................................................................................52
7.3.6. FUNCTION OF THE POSITIVE SAFE OUTPUT RELAY.........................................................................................52
7.3.7. STATUS OF THE INPUTS....................................................................................................................................52
7.3.8. STATUS OF THE RELAY OUTPUTS ....................................................................................................................53
7.3.9. DIGITAL OUTPUT STATUS.................................................................................................................................53
7.3.10. POWER STATUS..............................................................................................................................................53
7.3.11. MEASUREMENT ALARMS...............................................................................................................................54
7.3.12. DEVICE INFORMATION.....................................................................................................................................54
7.3.13. DEVICE CONFIGURATION VARIABLES.............................................................................................................54
8. TECHNICAL FEATURES................................................................................................................................................. 60
9. TECHNICAL SERVICE .....................................................................................................................................................64
10. WARRANTY..................................................................................................................................................................64
11. CE CERTIFICATE ...........................................................................................................................................................65

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REVISION LOG
Table 1: Revision log.
Date Revision Description
10/17 M175B01-03-17A Initial Version
11/17 M175B01-03-17B Changes in the following sections:
7.3.2.- 7.3.11.5.
12/17 M175B01-03-17C Changes in the following sections:
3.3.- 4.7.- 4.9.- 4.10.1.- 4.10.2.
04/18 M175B01-03-18A Changes in the following sections:
3.3.- 4.1.- 4.5.- 4.7.- 4.9.- 4.10.1.- 4.10.2.- 5.1.- 6.1.1.- 6.3.1.- 6.3.2.- 8
08/18 M175B01-03-18B Changes in the following sections:
8.
09/18 M175B01-03-18C
Changes in the following sections:
4.1.- 5.1.- 5.2.- 6.3.- 7.3.1.- 7.3.2.- 7.3.3.- 7.3.10.- 7.3.11.- 7.3.12.- 7.3.13.2.-
7.3.13.9.- 8
05/22 M175B01-03-22A Changes in the following sections:
7.3.13.6.
Note: The images of the devices are for illustrative purposes only and might differ from the original
device.
SYMBOLS
Table 2: Symbols.
Symbol Description
In compliance with the relevant European directive.
The device complies with the 2012/19/EC European directive. Do not dispose of the device in a
household waste container at the end of its useful life. Observe the local electronic device recy-
cling regulations.
Direct current.
~Alternating current.

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1. VERIFICATIONS UPON RECEPTION
The following must be checked upon reception of the device:
a) The device has been supplied according to the specifications in your order.
b) The device has not been damaged during transport.
c) Perform an external visual inspection of the device before connecting it.
d) Check that it has been supplied with the following:
RECmax-CVM 2-pole:
- An installation guide.
- 1 MC1-75/0.25A measuring transformer
- 1 WGC-20SC earth leakage transformer
RECmax-CVM 4-pole:
- An installation guide.
- 1 MC3-75/0.25A measuring transformer
- 1 WGC-30SC earth leakage transformer
Immediately contact the carrier and/or CIRCUTOR's after-sales service if you
detect any problem in the device upon reception.
2. DESCRIPTION OF THE PRODUCT
RECmax-CVM is a protection device, with cut-off capacity, which features overcurrent protection, ul-
tra-immunised earth leakage protection and a power analyzer.
The device is programmable and features a display. It measures the leakage current (earth leakage
protection) and orders the disconnection and reclosing of the circuit breaker (protection) through a
mechanically-operated motor.
There are 2 models available:
RECmax-CVM 2-pole, for single-phase installations.
RECmax-CVM 4-pole, for three-phase installations.
The device features:
- Inputs for the measurement of current and earth leakage current.
- 3 keys that can be used to browse the various screens and program the device.
- 2 Indicator LEDs.
- LCD Display, to view the parameters.
- 2 inputs for remote control and locking.

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- 2 alarm outputs.
- 1 output to indicate the status of the main switch.
- 1 digital output.
- RS-485 communications.

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3. INSTALLING THE DEVICE
3.1.- PRELIMINARY RECOMMENDATIONS
The operators using and handling the device must follow the safety measures estab-
lished in the country where the device will be used to guarantee its safe operation,
using personal protective equipment if needed.
The RECmax-CVM device must be installed by authorised and qualified staff.
Disconnect the device from the mains and disconnect the measuring devices before handling, chang-
ing the connections of or replacing the device. Handling the device while it is connected is hazardous
to people nearby.
The cables must be in perfect working order to prevent accidents or injuries to people and/or damage
to the facilities/installations.
Limit the operation of the device to measuring the specified current or voltage values.
The manufacturer of the device shall not be held responsible for any damage resulting from the user
or installation company failing to observe the warnings and/or recommendations indicated in this
manual nor for any damage resulting from the use of non-original products or accessories or those
from other brands.
Inspect the device before using it. Make sure that there are no cracks and that the housing is intact.
Do not use the device to take measurements if you detect an anomaly or malfunction.
Check the environment in which the device is installed before taking a measurement. Do not use the
device to take measurements in dangerous, explosive, wet or damp environments.
Disconnect the device from the mains and from the power supply (both the device and
its measuring system) before performing any maintenance work, repairs or handling
any of the connections of the device.
Contact the after-sales service if you detect that the device is not working properly.

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3.2.- INSTALLATION
While the device is connected, the terminals, opening the cover or removing elements
can expose parts that are hazardous to the touch. The device must not be used until
the installation process is complete.
The RECmax-CVM must be installed inside an electric panel or enclosure and mounted on a DIN rail
46277 (EN 50022).
The device has connection indicator LEDs, indicating the presence of voltage. Even if these LEDs are
not on, the user must still verify that the device is disconnected from all power supplies.
3.2.1.- MEASUREMENT OF THE EARTH LEAKAGE CURRENT I
The earth leakage current must be measured using the WGC earth leakage transformer included with
the device.
The WGC transformer, supplied with a cable and 2-pole connector,must be connected to terminals 1
and 2 of the device (see Table 3)
It is recommended to place the earth leakage transformer at the bottom of the circuit breaker (Figure
6and Figure 7).
The external earth leakage transformer is necessary for the device to operate cor-
rectly. Even if its installation only appears linked to the correct working of the earth
leakage protection, failing to install it will affect other functions of the device, such
as the reclosing and display of parameters on the RECmax-CVM display.
An incorrect or faulty connection of the earth leakage transformer means loss of
the earth leakage protection and possible risk of electric shock.
In case of a faulty connection of the earth leakage transformer or if this transformer is not compati-
ble with the RECmax-CVM, the screen shown in Figure 1 will appear.
REC
Figure 1: Error in the connection of the earth leakage transformer.

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3.2.2.- MEASUREMENT OF THE PHASE CURRENT
The phase current must be measured using the MC1-75/0.25A (RECmax-CVM 2-pole) or MC3-
75/0.25A current transformer (RECmax-CVM 4-pole) supplied with the device.
The MC transformer, supplied with a cable and 4-pole connector, must be connected to terminals 19,
20, 21 and 22 of the device (see Table 3)
The current measurement transformer must be installed on the top of the circuit
breaker.
3.2.3.- SAFETY SEAL
The device features a seal on the neutral terminal, see Figure 2.
Figure 2: Safety seal on the neutral terminal.
This seal fulfils two functions:
Safety, only the neutral cable must be installed in the sealed terminal.
For this, remove the central part from the seal to the point indicated, leaving the terminal free
to be able to install the neutral cable, see Figure 3.
Figure 3: Remove the central part of the seal.
Wiring any cable that is not Neutral to this terminal may seriously damage
the device, leaving it non-operational.

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Warranty, Once the central part of the seal has been removed, the side section of the seal
must remain attached. DO NOT REMOVE this part, it ensures that the insulated busbar at the
top of the circuit breaker has not been removed or tampered with.
The warranty of the device will be void if the safety seal has been tam-
pered with or removed.
3.3.- TERMINALS OF THE DEVICE
The RECmax-CVM terminals are distributed between the upper and lower face of the device.
Table 3:List of RECmax-CVM terminals.
Terminals of the RECmax-CVM device
1: Earth leakage current input I 13: REC LOCKED, REC LOCKED Locking Alarm Output (NO)
2: Earth leakage current input I 14: POSITIVE SAFE OUTPUT and REC LOCKED common
output
3: S, RS-485 Communications 15: POSITIVE SAFE OUTPUT, POSITIVE SAFE OUTPUT
Alarm Output (NO)
4: B-, RS-485 Communications 16: BREAKER ON/OFF, Indicates the status of the main
switch (Common)(1)
5: A+, RS-485 Communications 17: BREAKER ON/OFF,Indicates the status of the main
switch (NC) (1)
7: S0-, Digital Output 18: BREAKER ON/OFF, Indicates the status of the main
switch (NO) (1)
8: S0+, Digital Output 19: 1S1, Current input L1
9: EXT. ON/OFF, EXT ON/OFF Control Input (NO) 20: 2S1, Current input L2 (RECmax-CVM 4-pole model)
10: EXT LOCKED and EXT ON/OFF common output 21: 3S1, L3 current input ( RECmax-CVM 4-pole model)
11: EXT LOCKED, EXT LOCKED locking input (NO) 22: C, Common connector for current measurement
(1) See Table 12.
1 2
16 17 18
19
20
21
22
Figure 4:RECmax-CVM terminals, upper face.

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RECmax-CVM
9
10
11
13
14
15
3
4
5
7
8
Figure 5:RECmax-CVM terminals, lower face.

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3.4.- CONNECTION DIAGRAMS
3.4.1.- MEASUREMENT OF SINGLEPHASE NETWORK: RECmax-CVM 2POLE
L1 N
IL1 (19)
IL2 (20)
IL3 (21)
C (22)
I∆ (1)
I∆ (2)
Figure 6: Measurement of single-phase network: RECmax-CVM 2-pole.
All active conductors that feed the load to be protected, including the neutral, must
pass through the internal diameter of the earth leakage transformer. Do not pass the
protective conductor or the earth wire.
The current measurement transformer must be installed at the top of the circuit
breaker.

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RECmax-CVM
3.4.2.- MEASUREMENT OF THREEPHASE NETWORK: RECmax-CVM 4POLE
Brown/Green
Grey/Pink
Green/White
Red/Blue
L1L2L3 N
3P1 2P1 1P1
3P2 2P2 1P2 IL1 (19)
IL2 (20)
IL3 (21)
C (22)
I∆ (1)
I∆ (2)
Figure 7: Measurement of three-phase network: RECmax-CVM 4-poles.
All active conductors that feed the load to be protected, including the neutral, must
pass through the internal diameter of the earth leakage transformer. Do not pass the
protective conductor or the earth wire.
The current measurement transformer must be installed on the top of the circuit
breaker.

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3.5.- DISCONNECTION OF THE DEVICE
If after wiring the RECmax-CVM you decide to have the protected line disconnected, you must dis-
connect the device manually by pushing the contact lever of the switch downwards and moving the
mechanical lock (yellow sealable catch Figure 8) upwards. This eliminates any possibility of accidental
reclosing
Figure 8: Mechanical lock.
Never manually lower the circuit breaker without previously enabling the mechanical
lock (moving the yellow sealable catch, Figure 8, upwards). This prevents accidental
reclosing while handling the installation. When doing this the device is still powered
so precautions must be taken to avoid touching live parts.

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4. OPERATION
4.1.- OPERATING PRINCIPLE
RECmax-CVM is a device for protecting single-phase or three-phase electrical installations of up to 63
A in which a high continuity of electrical service must be guaranteed.
The device has an automatic reset system after a trip, so it reconnects on its own after a period of time,
with the installation recovering power without human operator intervention.
The basic functions of the RECmax-CVM are:
Earth leakage protection (protecting people against electric shock and property against the risk of
fire)
Protection against overloads and short-circuits with a circuit breaker.
Measurement and display of electrical parameters, see Table 4, in the four-quadrant (consumption
and generation).
0º
90º
180º
-90º
Capacitive
Capacitive Inductive
Inductive
Generation
Power
Consumption
Power
Single-phaseThree-phase
Single-phase
Single-phase
Single-phase Three-phase Three-phase
Three-phase
k
k
k
k
k
k
k
k
k
k
k
k
k
k
kk
k
k
k
k
Figure 9: Measurement convention.
Table 4: Measurement parameters of the RECmax-CVM.
Parameter Units Phases
L1-L2-L3
Total
III N
Phase-neutral voltage (2) Vph-N 
Phase-phase voltage Vph-ph 
Current (2) A 
Frequency Hz 
Active power (2) kW  
Apparent Power (2) kVA  
Inductive Reactive Power (2) kvarL  
Capacitive Reactive Power (2) kvarC  
Power factor PF  
Cos φ(2) φ 
Voltage THD % (2) % THD V 
Current THD % (2) % THD A 

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Table 4 (Cont.): Measurement parameters of the RECmax-CVM.
Parameter Units Phases
L1-L2-L3
Total
III N
Harmonic Breakdown - Voltage
(up to the 31st harmonic) harm V 
Harmonic Breakdown - Current
(up to the 31st harmonic) harm V 
Total Active Energy kWh 
Total Inductive Reactive Energy kvarLh 
Total Capacitive Reactive Energy kvarCh 
Total Apparent Energy kVAh 
Active Energy generated kWh 
Inductive Reactive Energy generated kvarLh 
Capacitive Reactive Energy generated kvarCh 
Apparent energy generated kVAh 
Maximum Current Demand A  
Maximum Active Power Demand kW 
Maximum Apparent Power Demand kVA 
(2) Parameters displayed.
4.2.- DESCRIPTION OF THE DEVICE
Reset lever
Main switch
Manual locking
Display
LEDs
Keyboard
Figure 10: General description of the device.

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RECmax-CVM
4.3.- KEYBOARD FUNCTIONS
The RECmax-CVM has 3 keys, Figure 11:
Keyboard
Figure 11: Keyboard.
TEST, pressing this key causes a forced trip of the earth leakage protection. If the device has
already tripped, pressing does not cause any action.
Pressing the TEST key disables the automatic reclosing system, as it is consid-
ered that the person who performs the local TEST will generate the reset for
rearming the protection.
RESET, the function of the key depends on the status of the device:
Table 5: Operation of the RESET key.
Key Operation
RESET
Normal operating status
Display of the home screen of the device with description of the firmware model
and version.
Trip status
System restart and reclosing the device.
Configuration
Browsing the setup menu.
Jumping between the different Configuration options.
PROG, the function of the key depends on how long it is pressed. The PROG key is physically
sealable, see “6.3.1.- PHYSICAL LOCKING”.
Table 6: Operation of the PROG key.
Key Operation
PROG
Short press (< 3 s)
Saves the configured values and exits the setup menu.
Long press ( > 3 s)
Accesses the setup menu

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4.4.- DISPLAY
The device has a backlight display with green or red light, according to the status of the device. The
backlight is green and in trip conditions it is red under normal operating conditions.
td s
A
I n
REC
+
PROG N
Figure 12: RECmax-CVM display.
The device display shows different symbols that indicate the operating status of the device:
The leakage symbol with the bars is activated when a leakage current is detected.The num-
ber of bars is proportional to the instantaneous value of the leakage current, scaled with
respect to the trip current In.
td s
A
I n
REC
+
PROG N
The REC symbol is displayed when automatic reclosing is possible.
The +symbol indicates that the REC LOCKED locking alarm is configured for positive safety.
td s
A
I n
REC
+
PROG N
The PROG symbol is displayed on the setup screens of the device.
td
mAI n
REC
td s
A
I n
REC
+
PROG N