Microelettrica Scientifica MC2-30M User manual

MC2-30M
Doc. N° MO-0495-ING
Copyright 2018
Date
17.03.2022
Rev.
2
Pag.
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MICROPROCESSOR
MOTOR PROTECTION
RELAY
TYPE
“MC2-30M”
OPERATION MANUAL

MC2-30M
Doc. N° MO-0495-ING
Copyright 2018
Date
17.03.2022
Rev.
2
Pag.
2
of
64
1. General Utilization and Commissioning Directions _________________________________________________________4
1.1 - Storage and Transportation _____________________________________________________________________4
1.2 - Installation __________________________________________________________________________________4
1.3 - Electrical Connection___________________________________________________________________________4
1.4 - Measuring Inputs and Power Supply _______________________________________________________________4
1.5 - Outputs Loading ______________________________________________________________________________4
1.6 - Protection Earthing ____________________________________________________________________________4
1.7 - Setting and Calibration _________________________________________________________________________4
1.8 - Safety Protection _____________________________________________________________________________4
1.9 - Handling ____________________________________________________________________________________4
1.10 - Maintenance ________________________________________________________________________________4
1.11 - Waste Disposal of Electrical & Electronic Equipment __________________________________________________4
1.12 - Fault Detection and Repair _____________________________________________________________________4
2. General _________________________________________________________________________________________5
2.1 - Power Supply ________________________________________________________________________________5
3. Front Panel ______________________________________________________________________________________5
4. Keyboard and Display ______________________________________________________________________________6
4.1 - Display _____________________________________________________________________________________6
5. Icons of Display ___________________________________________________________________________________7
6. Signalization _____________________________________________________________________________________8
6.1 - Leds Manual Reset ____________________________________________________________________________8
6.2 – Display of the last trip _________________________________________________________________________8
7. Leds Configuration_________________________________________________________________________________9
7.1 - Name _____________________________________________________________________________________10
7.2 - Link enable _________________________________________________________________________________10
7.3 - Status _____________________________________________________________________________________10
7.4 - Light Prog. _________________________________________________________________________________10
7.5 - Funct. Mode ________________________________________________________________________________10
7.6 - Functions __________________________________________________________________________________10
7.7 - Table 1 ____________________________________________________________________________________11
7.8 - Example: Change settings for “Led1” _____________________________________________________________12
7.8.1 - “Link Enable” ____________________________________________________________________________12
7.8.2 - “Flashing” ______________________________________________________________________________12
7.8.3 - “Funct.Mode” ____________________________________________________________________________13
7.8.4 -“Functions” _____________________________________________________________________________13
8. User Variables ___________________________________________________________________________________14
8.1 - Name _____________________________________________________________________________________14
8.2 - User Descr. _________________________________________________________________________________14
8.3 - Linked functions _____________________________________________________________________________14
8.4 - OpLogic____________________________________________________________________________________14
8.5 - Timer _____________________________________________________________________________________14
8.6 - Timer type _________________________________________________________________________________14
8.7 – Extra _____________________________________________________________________________________14
8.8 - Logical status _______________________________________________________________________________14
8.9 - Example: Setting “User Variable” ________________________________________________________________14
8.9.1 - “User description” (User descr.) _____________________________________________________________15
8.9.2 - “Linked Functions”________________________________________________________________________15
8.9.3 - “Operation Logic” (Oplogic) _________________________________________________________________16
8.9.4 - “Timer” ________________________________________________________________________________16
8.9.5 - “Timer type” ____________________________________________________________________________17
8.9.6 - “Extra”_________________________________________________________________________________17
9. Local Commands _________________________________________________________________________________18
10. Measure_______________________________________________________________________________________19
11. Maximum Values ________________________________________________________________________________20
12. Trip Recording __________________________________________________________________________________21
13. Partial Counters _________________________________________________________________________________23
14. Total Counters __________________________________________________________________________________24
15. Events ________________________________________________________________________________________25
15.1 – Events on display ___________________________________________________________________________26
16. System (System parameters) ______________________________________________________________________27
17. Settings _______________________________________________________________________________________28
17.1 - Modifying the setting of variables _______________________________________________________________29
17.2 - Password _________________________________________________________________________________30
17.3 – Menu: Communic. (Communication) ___________________________________________________________31
17.3.1 – Description of variables___________________________________________________________________31
17.3.2 – Front Panel USB serial communication port (RS232) ____________________________________________31
17.3.3 – Cable for connection from Relay to Personal Computer __________________________________________31
17.3.4 – Main serial communication port (RS485) _____________________________________________________31
17.4 - Menu: Customize (Human Machine Interface) ____________________________________________________32
17.4.1 – Description of variables___________________________________________________________________32
17.5 - Function: FileSys (File system and Disk management) ______________________________________________33
17.5.1 - Description of variables ___________________________________________________________________33
17.5.2 – Download file informations ________________________________________________________________33
17.6 - Function: T> (Thermal Image F49) _____________________________________________________________34

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17.6.1 - Description of variables ___________________________________________________________________34
17.6.2 - Trip and Alarm__________________________________________________________________________34
17.7 - Function: 1I> (First Overcurrent Element F50/51) _________________________________________________36
17.7.1 - Description of variables ___________________________________________________________________36
17.7.2 – Blocking Logic (BO-BI) ___________________________________________________________________37
17.7.3 - Automatic doubling of Overcurrent thresholds on current inrush ___________________________________37
17.8 – Function: 2I> (Second Overcurrent Element F50/51) _______________________________________________38
17.8.1 - Description of variables ___________________________________________________________________38
17.9 - Function: 3I> (Third Overcurrent Element F50/51) _________________________________________________38
17.9.1 - Description of variables ___________________________________________________________________38
17.10 - Function: 1Io> (First Earth Fault Element 50N/51N) _______________________________________________39
17.10.1 - Description of variables __________________________________________________________________39
17.11 - Function: 2Io> (Second Earth Fault Element 50N/51N) ____________________________________________39
17.11.1 - Description of variables __________________________________________________________________39
17.12 - Function: 3Io> (Third Earth Fault Element 50N/51N) ______________________________________________40
17.12.1 - Description of variables __________________________________________________________________40
17.13 - Function: 1Is> (First Negative Sequence Element F46)_____________________________________________41
17.13.1 - Description of variables __________________________________________________________________41
17.13.2 – Time/Current operation of the first Current Unbalance element “f(t)” ______________________________41
17.14 - Function:2Is> (Second Negative Sequence Element F46) ___________________________________________41
17.14.1 - Description of variables __________________________________________________________________41
17.15 - Function: MotSt (Motor Start) ________________________________________________________________42
17.15.1 - Description of variables __________________________________________________________________42
17.16 - Function: LR (Locked Rotor – Rotor jam) ________________________________________________________42
17.16.1 - Description of variables __________________________________________________________________42
17.17 - Function: StNo (Limitation Start Number) _______________________________________________________42
17.17.1 - Description of variables __________________________________________________________________42
17.18 - Function: StSeq (starting Sequence Control)_____________________________________________________43
17.18.1 - Description of variables __________________________________________________________________43
17.18.2 - Operation ____________________________________________________________________________43
17.19 - Function: I< (No load running) _______________________________________________________________43
17.19.1 - Description of variables __________________________________________________________________43
17.19.2 - Operation ____________________________________________________________________________43
17.20 - Function: TCS (Trip Circuit Supervision)_________________________________________________________44
18.20.1 - Description of variables __________________________________________________________________44
17.20.2 - Operation ____________________________________________________________________________44
17.21 - Function: IRF (Internal Relay Fault)____________________________________________________________45
17.21.1 - Description of variables __________________________________________________________________45
17.21.2 - Operation ____________________________________________________________________________45
17.22 - Function: BrkFail (Breaker Failure) ____________________________________________________________45
17.22.1 - Description of variables __________________________________________________________________45
17.22.2 - Operation ____________________________________________________________________________45
17.23 - Function: Oscillo (Oscillographic Recording) _____________________________________________________46
17.23.1 - Description of variables __________________________________________________________________46
17.23.2 - Operation ____________________________________________________________________________46
17.23.3 – Available on software ___________________________________________________________________47
17.23.4 – Setting “User Trigger Oscillo” _____________________________________________________________48
17.24.5 – Example: Setting “Oscillo Trigger Logic” _____________________________________________________49
17.24 - Function: CB Mngn (Control C/B) _____________________________________________________________52
17.24.1 - Description of variables __________________________________________________________________52
17.24.2 – Push-Buttons (Programmable only via software) ______________________________________________52
17.25 - Function: ExtResCfg (External Reset Configuration) _______________________________________________54
17.25.1 - Description of variables __________________________________________________________________54
18. Input – Output (via software)______________________________________________________________________54
18.1 – Digital Input _______________________________________________________________________________54
18.2 – “DI” Configuration (via software) _______________________________________________________________54
18.2.1 – Example ______________________________________________________________________________55
18.3 – Physical Outputs____________________________________________________________________________56
18.4 - “DO” Configuration __________________________________________________________________________56
18.4.1 - Example configuration ____________________________________________________________________56
18.4.2 - Functions - Operation Mode________________________________________________________________57
19. InfoStatus _____________________________________________________________________________________59
20. Date and Time __________________________________________________________________________________60
20.1- Clock synchronization ______________________________________________________________________61
21. Healthy (Diagnostic Information) ___________________________________________________________________62
22. Dev.Info (Relay Version) __________________________________________________________________________62
23. Maintenance ___________________________________________________________________________________62
24. Wiring Diagram _________________________________________________________________________________63
25. Overall Dimensions ______________________________________________________________________________63
26. Electrical Characteristics __________________________________________________________________________64

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Doc. N° MO-0495-ING
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1. General Utilization and Commissioning Directions
Always make reference to the specific description of the product and to the Manufacturer's instruction.
Carefully observe the following warnings.
1.1 - Storage and Transportation
Must comply with the environmental conditions stated in the product's specification or by the applicable IEC
standards.
1.2 - Installation
Must be properly made and in compliance with the operational ambient conditions stated by the Manufacturer.
1.3 - Electrical Connection
Must be made strictly according to the wiring diagram supplied with the Product, to its electrical
characteristics and in compliance with the applicable standards particularly with reference to human safety.
1.4 - Measuring Inputs and Power Supply
Carefully check that the value of input quantities and power supply voltage are proper and within the
permissible variation limits.
1.5 - Outputs Loading
Must be compatible with their declared performance.
1.6 - Protection Earthing
When earthing is required, carefully check its effectiveness.
1.7 - Setting and Calibration
Carefully check the proper setting of the different functions according to the configuration of the protected
system, the safety regulations and the co-ordination with other equipment.
1.8 - Safety Protection
Carefully check that all safety means are correctly mounted, apply proper seals where required and
periodically check their integrity.
1.9 - Handling
Notwithstanding the highest practicable protection means used in designing electronic circuits, the electronic
components and semiconductor devices mounted on the modules can be seriously damaged by electrostatic
voltage discharge which can be experienced when handling the modules.
The damage caused by electrostatic discharge may not be immediately apparent, but the design reliability and
the long life of the product will have been reduced. The electronic circuits are completely safe from
electrostatic discharge (8 KV IEC 255.22.2) when housed in their case; withdrawing the modules without
proper cautions expose them to the risk of damage.
1.10 - Maintenance
Make reference to the instruction manual of the Manufacturer; maintenance must be carried-out by specially
trained people and in strict conformity with the safety regulations.
1.11 - Waste Disposal of Electrical & Electronic Equipment
(Applicable throughout the European Union and other European countries with separate collection program).
This product should not be treated as household waste when you wish dispose of it. Instead, it should be
handed over to an applicable collection point for the recycling of electrical and electronic equipment.
By ensuring this product is disposed of correctly, you will help prevent potential negative consequence to the
environment and human health, which could otherwise be caused by inappropriate disposal of this product.
The recycling of materials will help to conserve natural resource.
1.12 - Fault Detection and Repair
Internal calibrations and components should not be altered or replaced.
For repair please ask the Manufacturer or its authorized Dealers.
Misapplication of the above warnings and instruction relieves the Manufacturer of any liability.

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2. General
The main features of the relays are:
User friendly front face with hi-resolution graphic display (240x128), 10 programmable signal Leds, 6 push-
buttons (configurable) and four push-button for complete local managemen, USB for local communication.
Eight user programmable Output Relays.
Eight opto-isolated, self powered Digital Inputs.
Additional RS485 communication port
Input currents are supplied to 3 current transformers: measuring phase currents.
An additional internal CT directly measures the residual (Zero Sequence) current of the three inputs.
Current inputs can be 1 or 5A: selection between 1A or 5A is made by movable jumpers provided inside the
Relay.
2.1 - Power Supply
The relay can be fitted with two different types of power supply:
Type 1
24V(-20%) / 110V(+15%) a.c.
24V(-20%) / 125V(+20%) d.c.
Type 2
80V(-20%) / 220V(+15%) a.c.
90V(-20%) / 250V(+20%) d.c.
Before energizing the unit check that supply voltage is within the allowed limits.
3. Front Panel

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4. Keyboard and Display
Pushbuttons Programmable
↓
Navigation
menu
By these buttons the options showed in
correspondence on the display are selected.
Increase These buttons are used to scroll the items of
the different menus (Local Control,
Measurements, Energy metering etc).
Decrease
4.1 - Display
The 240x128 pixel hi-resolution LCD display the available information (menu, etc.).

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5. Icons of Display
LocalCmd Local Commands
Measure Actual Measurements
MaxVal Maximum Values
TripRec. Trip Recording
Counter Partial Counters (Resettable Counter)
ROCnt Total Counter (Read Only Counter)
Events Event Recording
Setting Function Settings
System System Settings
InfoStatus Information Status
TimeDate Time And Date
Healthy Diagnostic Information
Dev.Info Relay Version

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6. Signalization
Eleven signal leds are provided:
1
Led Power Supply
Not programmable
Green
10
Leds
Programmable (via software)
N°
Colours
1
Green
2
Green
3
Green
4
Yellow
5
Red
6
Red
7
Red
8
Yellow
9
Red
10
Green
6.1 - Leds Manual Reset
For Leds manual reset operate as follows:
1
•
Press “Menu” for
access to the main
menu with icons.
3
•
Select
“LedClear”
•
Press “Select” to
execute the
command.
2
•
Select icon
“LocalCmd”.
4
•
When command has
been executed the
display shows
“Command Done”;
•
Press “Select”,
6.2 – Display of the last trip
Beside the signalization of the led “Trip”, indicating a generic function trip, the display shows a window
indicating the latest function that was tripped and the number of events that are stored in the memory.
The display will show this window until the reset button or external reset are operated.
1
•
Press “Menu” to access to the main menu with icons.
Press “Home” to erase trip visualization.
Ex. “tTCS” (flashing) is the last trip.

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7. Leds Configuration (only via software)
The relay manage up to 10 signal leds (Programmable), 1 led “Power” (green).
For Leds programming (only via software) operate as follows:
- Open the software program and connect to the relay.
- Select “Change Windows” from “Menu” button (options)
- Select “Led Setting”

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The window for leds configuration will show:
7.1 - Name
Led name – for leds position see picture
7.2 - Link enable
Linked
=
Enable to operate
Not Linked
=
Disable
7.3 - Status
7.4 - Light Prog.
Light-on
=
When cause appear led is illuminated
Flashing
=
When cause appear led is flashing
7.5 - Funct. Mode
Volatile
=
When cause disappear led turn-off (Not memorized)
Latched
=
When cause disappear led remain illuminated (memorized)
7.6 - Functions
Select the function assigned to specific led (see table 1).
It’s possible to configure only one function for each led.
For configuration multiple functions use “UserVar” function.
Light-off
=
Normal condition
Light-on
=
When cause appear led is illuminated
See “Light Prog”
Flashing
=
When cause appear led is flashing

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7.7 - Table 1
Tal
Alarm
Thermal Image T>
T>
Trip
1I>
Start
First overcurrent element
t1I>
Trip
2I>
Start
Second overcurrent element
t2I>
Trip
3I>
Start
Third overcurrent element
t3I>
Trip
1Io>
Start
First earth fault element
t1Io>
Trip
2Io>
Start
Second earth fault element
t2Io>
Trip
3Io>
Start
Third earth fault element
t3Io>
Trip
1Is>
Start
First negative sequence current element
t1Is>
Trip
2Is>
Start
Second negative sequence current element
t2Is>
Trip
I<
Start
No Load Running element
tI<
Trip
ILR
Start
Locked Rotor element
tILR
Trip
IRF
Start
Internal Relay Failure
tIRF
Trip
BF
BF (Breaker Failure)
tTCS
Trip coil supervision
MotOn
Motor On
LimStNum
Limitation Startings Number
StSeqSucc
Start Sequence
Itr
Switch-over current
DskClean
Disk near Full clean operation is required
DskFull
Disk Full Write should be lock
DskWR
Disk write in progress
DskFRMT
Disk Format in progress
DskCHK
Check disk in progress
rDskAttach
Not used
Removable disk usb attach
rDskDetach
Removable disk usb detach
rDskDtchable
Removable disk usb now detachable
rDskClean
Removable disk usb near to full clean operation is required
rDskFull
Removable disk usb full, write locked
rDskWR
Removable disk usb write in progress
rDskFRMT
Removable disk usb format in progress
rDskCHK
Removable disk usb check in progress
manOpCmd
Manual Open Command
L/Rdisc
Local/Remote signal Discrepancy
CL-Cmd
Close Command
C/Bfail
Circuit Breaker failure
UserTriggerOscillo
User Variable for Oscillographic Recording
UserVar<0>
User Variable
to
UserVar<24>
Vcc
“One” logic
Gnd
“Zero” logic
Reset
Reset signal logic
P1
Push-button 1
P2
Push-button 2
P3
Push-button 3
P4
Push-button 4
P5
Push-button 5
P6
Push-button 6
Gen.Start
Start
Generic
Gen.Trip
Trip
0.D1
Digital Inputs
0.D1Not
to
0.D8
0.D8Not
0.R1
Output relays
to
0.R8

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7.8 - Example: Change settings for “Led1”
Change settings for “Led1” : “Enable”, “Flashing”, “Latched”, “1I>”.
Main Windows:
7.8.1 - “Link Enable”
Select “Link enable” related to “Led 1” and press right button on mouse, select
“Value change”:
Select “Linked” and press “OK” (if Password is
request, see § Password):
7.8.2 - “Flashing”
Select “Light prog” related to Led 1 and press right button on mouse, select “Value
change”:
Select “Flashing” and press “OK” (if Password is
request, see § Password):

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7.8.3 - “Funct.Mode”
Select “Funct.Mode” related to Led 1 and press right button on mouse, select
“Value change”:
Select “Latched” and press “OK”
(if Password is request, see § Password):
7.8.4 -“Functions”
Select “Functions” related to Led 1 and press right button on mouse,
select “Value change”:
Select “1I>” and press “OK”
(if Password is request, see § Password):

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8. User Variables
The “User Variable” is a result of a logical operation (Or, AND, ecc...), it can be used like other logical output.
This operation is possible only via software.
8.1 - Name
Internal progressive name
8.2 - User Descr.
Custom identification label for user variable
8.3 - Linked functions
Selection functions
8.4 - OpLogic
Operation Logic
=
[None, OR, AND, XOR, NOR, NAND, NOT, Ff-SR, Counter, Rise-UP, Fall-Down]
8.5 - Timer
Time delay (0-600)s, step 0.01s
8.6 - Timer type
Delay
=
Add a delay on output activation. The “Timer” is edge triggered on rise edge.
Monostable P
=
Activated the output for the time “Timer”
Monostable N
=
Disactivated the output for the time "Timer".
Blinking
=
The output switches periodically at the frequency defined by "Timer".
Delay-Fall-Down
=
Delay-Fall-Down
8.7 – Extra
Extra Time (0 - 65000)s, step 1s
8.8 - Logical status
“User Variable” Logical status
8.9 - Example: Setting “User Variable”
Open software program and connect to the relay.
Select “Change Windows” from “Menu” button
Select “User Variable”
Setting for “UserVar<0>” : “Current Trip”, “1I>,2I>,3I>”, “OR”, “1”, “Monostable P”, “10”.

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8.9.1 - “User description” (User descr.)
Select “User descr” related to “UserVar<0>” and press right button on mouse,
select “Value change”:
Insert “Current Trip” into box and press
“OK”:
8.9.2 - “Linked Functions”
Select “Linked Functions” related to “UserVar<0>” and press right button on
mouse, select “Value change”:
Select “1I>, 2I>, 3I>” from “Available” box via push-button “<Add”, and press “OK”.
For remove functions, use push-button “>Remove”.

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8.9.3 - “Operation Logic” (Oplogic)
Select “Oper Logic” related to “UserVar<0>” and press right button on mouse,
select “Value change”:
Insert “OR” into box and press “OK”:
8.9.4 - “Timer”
Select “Timer” related to “UserVar<0>” and press right button on mouse, select
“Value change”:
Select “1” into box and press “OK”:

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8.9.5 - “Timer type”
Select “Timer” related to “UserVar<0>” and press right button on mouse, select
“Value change”:
Select “Monostable P” into box and
press “OK”:
8.9.6 - “Extra”
Select “Extra” related to “UserVar<0>” and press right button on mouse,
Select “10” into box and press “OK”:

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9. Local Commands
“Local Commands” allow to operate from relay front face controls like Thermal Memory reset, Leds reset, etc.
Menu
Description
Password
Led
Clear
Reset of signal Leds
No
Relays
Clear
Manual reset of output relays
No
main C/B
Cl.
Manual C/B closing (conditioned by Password)
Yes
main C/B
Op.
Manual C/B opening (conditioned by Password)
Yes
Event
Clear
Reset Events
Yes
LTrip
Clear
Reset Last Trip
Yes
Counter
Clear
Reset Counters
Yes
HistFail
Clear
Reset of Internal Failure Historic records
Yes
Reset
StNo
Reset of the Starts Number
Yes
Reset
Term
Reset to zero of the accumulations relevant to Thermal Image and
Interruption Energy (only if T> is enable)
Yes
Leds
Test
Signal Leds test
No
Force
Osc
Force Oscillo Recording
Yes
Format
iDisk
Format internal disk
Yes
Check
iDisk
Check internal disk
Yes
To operate one command by the Front Face Keyboard, proceed as follows (Led Clear in the present example).
1
•Press “Menu” for access to the main menu with icons.
2
•Select “LocalCmd” icon with pushbutton “Increase” or “Decrease”.
•Press “Select” for access.
3
•Select with pushbutton “Increase” or “Decrease” the menu “LedClear”.
•Press “Select” to execute the command.
(if Password is request, see § Password).
4
•When command has been executed the display shows
“Command Done”; go to “3”.

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10. Measure
Real time values as measured during the normal operation.
1
•Press “Menu” for access to the main menu with icons.
2
•Select “Measure” icon with pushbutton “Increase” or “Decrease”.
•Press “Select” for access.
3
•Scroll the menu “Measure”with pushbutton “Increase” or
“Decrease” to display
the measurement.
•Press “Exit” to go to the main menu.
Imx
(0 ÷99999)
A
Largest of the 3 phase-currents (Ia,Ib,Ic)
Ia
(0 ÷99999)
A
RMS value phase A current
Ib
(0 ÷99999)
A
RMS value phase B current
Ic
(0 ÷99999)
A
RMS value phase C current
Io
(0 ÷99999)
A
RMS value of Zero Sequence Current
I1
(0 ÷99999)
In
Positive sequence current
I2
(0 ÷99999)
In
Negative Sequence current
Tem
(0 ÷99999)
%T
Thermal status as % of the full load continuous operation temperature Tn
tst
(0 ÷99999)
s
Motor starting time
Ist
(0 ÷99999)
A
Max current during motor starting

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11. Maximum Values
Maximum demand values recorded starting from 100ms after closing of main Circuit Breaker (updated any time
the breaker closes).
1
•Press “Menu” for access to the main menu with icons.
2
•Select “MaxVal” icon with pushbutton “Increase” or “Decrease”.
•Press “Select” for access.
3
•Scroll the menu “Measure”with pushbutton “Increase” or
“Decrease” to display
the measurement.
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Imx
(0 ÷99999)
A
Largest of the 3 phase-currents (Ia,Ib,Ic)
Ia
(0 ÷99999)
A
RMS value phase A current
Ib
(0 ÷99999)
A
RMS value phase B current
Ic
(0 ÷99999)
A
RMS value phase C current
Io
(0 ÷99999)
A
RMS value of Zero Sequence Current
I1
(0 ÷99999)
In
Positive sequence current
I2
(0 ÷99999)
In
Negative Sequence current
Tem
(0 ÷99999)
%T
Thermal status as % of the full load continuous operation temperature Tn