Microelettrica Scientifica MC2-30M Operation Manual
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Microelettrica Scientifica MC2-30M Operation Manual

Microprocessor motor protection relay
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MC2-30M
MO-0495-ING
Doc. N°
MICROPROCESSOR
MOTOR PROTECTION
RELAY
TYPE
"MC2-30M"
OPERATION MANUAL
Copyright 2018
Date
17.03.2022
Rev.
2
Pag.
1
of
64

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  • Page 1 MC2-30M MO-0495-ING Doc. N° MICROPROCESSOR MOTOR PROTECTION RELAY TYPE “MC2-30M” OPERATION MANUAL Copyright 2018 Date 17.03.2022 Rev. Pag.

  • Page 2: Table Of Contents

    MC2-30M MO-0495-ING Doc. N° 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...
  • Page 3 MC2-30M MO-0495-ING Doc. N° 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...

  • Page 4: General Utilization And Commissioning Directions

    MC2-30M MO-0495-ING Doc. N° 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.

  • Page 5: General

    MC2-30M MO-0495-ING Doc. N° 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.

  • Page 6: Keyboard And Display

    MC2-30M MO-0495-ING Doc. N° 4. Keyboard and Display ↓ Pushbuttons Programmable Navigation By these buttons the options showed in menu 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).

  • Page 7: Icons Of Display

    MC2-30M MO-0495-ING Doc. N° 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...

  • Page 8: Signalization

    MC2-30M MO-0495-ING Doc. N° 6. Signalization Eleven signal leds are provided: Led Power Supply Not programmable Green Leds Programmable (via software) N° Colours Green Green Green Yellow Yellow Green 6.1 - Leds Manual Reset For Leds manual reset operate as follows: Press “Menu”...

  • Page 9: Leds Configuration

    MC2-30M MO-0495-ING Doc. N° 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.

  • Page 10: Name

    MC2-30M MO-0495-ING Doc. N° 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 Light-off Normal condition Light-on When cause appear led is illuminated See “Light Prog”...
  • Page 11 MC2-30M MO-0495-ING Doc. N° 7.7 - Table 1 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>...

  • Page 12: Example: Change Settings For "Led1

    MC2-30M MO-0495-ING Doc. N° 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”:...

  • Page 13: Funct.mode

    MC2-30M MO-0495-ING Doc. N° 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”:...

  • Page 14: User Variables

    MC2-30M MO-0495-ING Doc. N° 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.

  • Page 15: User Description" (User Descr.)

    MC2-30M MO-0495-ING Doc. N° 8.9.1 - “User description” (User descr.) Select “User descr” related to “UserVar<0>” and press right button on mouse, select “Value change”: Trip” into box and press Insert “Current “OK”: 8.9.2 - “Linked Functions” Select “Linked Functions” related to “UserVar<0>” and press right button on mouse, select “Value change”:...

  • Page 16: Operation Logic" (Oplogic)

    MC2-30M MO-0495-ING Doc. N° 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”:...

  • Page 17: Timer Type

    MC2-30M MO-0495-ING Doc. N° 8.9.5 - “Timer type” Select “Timer” related to “UserVar<0>” and press right button on mouse, select “Value change”: P” into box and Select “Monostable press “OK”: 8.9.6 - “Extra” Select “Extra” related to “UserVar<0>” and press right button on mouse, Select “10”...

  • Page 18: Local Commands

    MC2-30M MO-0495-ING Doc. N° 9. Local Commands Commands” allow to operate from relay front face controls like Thermal Memory reset, Leds reset, etc. “Local Menu Description Password Clear Reset of signal Leds Relays Clear Manual reset of output relays main C/B...

  • Page 19: Measure

    MC2-30M MO-0495-ING Doc. N° 10. Measure Real time values as measured during the normal operation. • Press “Menu” for access to the main menu with icons. • Select “Measure” icon with pushbutton “Increase” or “Decrease”. • Press “Select” for access.

  • Page 20: Maximum Values

    MC2-30M MO-0495-ING Doc. N° 11. Maximum Values Maximum demand values recorded starting from 100ms after closing of main Circuit Breaker (updated any time the breaker closes). • Press “Menu” for access to the main menu with icons. • Select “MaxVal” icon with pushbutton “Increase” or “Decrease”.

  • Page 21: Trip Recording

    MC2-30M MO-0495-ING Doc. N° 12. Trip Recording Display of the function which caused the tripping of the relay plus values of the measurement at the moment of tripping. The last 30 events are recorded. The memory buffer is refreshed at each new relay tripping (FIFO logic).
  • Page 22 MC2-30M MO-0495-ING Doc. N° • Scroll with pushbuttons “Increase” or “Decrease” the available measurements. • Select “Exit” to go back to “5” for another selection, or “2” go back to the main menu. • Select “Erase” with button “Decrease”. • Press “Select” to execute the commands; All Trips recorded are erased.

  • Page 23: Partial Counters

    MC2-30M MO-0495-ING Doc. N° 13. Partial Counters Partial counters of the number of operations for each of the relay functions. Display T> Operations counters Thermal Image → 1I> Operations counters First overcurrent element 2I> Operations counters Second overcurrent element 3I>...

  • Page 24: Total Counters

    MC2-30M MO-0495-ING Doc. N° • Select “Erase” with pushbutton “Decrease”. • Press “Select” . (if Password is request, see § Password). • When command has been executed the display shows “Command Done”; and return to “5”. • With pushbutton “Exit” to go back to the main menu.

  • Page 25: Events

    MC2-30M MO-0495-ING Doc. N° 15. Events Display of the function which caused any of the following events: - Status change of digital Inputs/Outputs. - Start of protection functions – Trip of protection function – Function reset. The last 500 events are recorded at pick-up (rise) or drop-out (fall).

  • Page 26: Events On Display

    MC2-30M MO-0495-ING Doc. N° 15.1 – Events on display Functions Events Events Description Status Displayed Alarm Rise T> Thermal Image T> T> Trip Rise Fall 1I> 1I> Start Rise 1I> Fist overcurrent element t1I> t1I> Trip Rise Fall 2I> 2I>...

  • Page 27: System (System Parameters)

    MC2-30M MO-0495-ING Doc. N° 16. System (System parameters) Setting of system parameters. CTs&PTs Phase CT Primary Prim. 1000 (1 ÷ 9999) step → Secondary Sec. (1 / 5) → Neutral CT Primary Prim. 1000 (1 ÷ 9999) step → Secondary Sec.

  • Page 28: Settings

    MC2-30M MO-0495-ING Doc. N° 17. Settings Two complete banks of settings of the programmable variables are available in the “SETTING” menu. Both “Group #1” and “Group #2” include the hereunder listed variables. Indicates the Setting Group that is actually being modified.

  • Page 29: Modifying The Setting Of Variables

    MC2-30M MO-0495-ING Doc. N° 17.1 - Modifying the setting of variables To modify any variable setting by the keyboard proceed as follows: 1.000 In” to 3.500 In”) (example: change setting of element “1I>”, from “Is “Is Press “Menu” for •...

  • Page 30: Password

    MC2-30M MO-0495-ING Doc. N° 17.2 - Password The password is requested any time the user wishes to modify any password protected parameter (example “1I>” menu “Setting”). The factory default password is “1111”. The password is only modifiable with the software.

  • Page 31: Menu: Communic. (Communication)

    MC2-30M MO-0495-ING Doc. N° 17.3 – Menu: Communic. (Communication) Options BRRem 19200 [9600 / 19200 / 38400] → PRRem MODBUS [MODBUS / IEC103] → Node Address → Addr. [1 ÷ 250] 17.3.1 – Description of variables BRRem USB (Front Panel) serial communication speed...

  • Page 32: Menu: Customize (Human Machine Interface)

    MC2-30M MO-0495-ING Doc. N° 17.4 - Menu: Customize (Human Machine Interface) Options Lang English [English / Loc.Lang] → Light [Auto / On] → Timers tBckL step → (5 ÷ 120) 17.4.1 – Description of variables Lang Set Language Light Set Display backlight...

  • Page 33: Function: Filesys (File System And Disk Management)

    MC2-30M MO-0495-ING Doc. N° 17.5 - Function: FileSys (File system and Disk management) Options disable [disable / int.disk] → OniDF StopWrite [StopWrite / DelOldFiles] → 17.5.1 - Description of variables Internal Disk write Enable : Protection log file write enabled...

  • Page 34: Function: T> (Thermal Image F49)

    MC2-30M MO-0495-ING Doc. N° 17.6 - Function: T> (Thermal Image F49) Status Enab. [No / Yes] → Options OPMOD I1.I2 [I1.I2 / I.Max] → Livelli step → [10 ÷ 100] step 0.01 → [0.5 ÷ 1.5] Tres [10 ÷ 100] step →...
  • Page 35 MC2-30M MO-0495-ING Doc. N° 17.6.2.2 – Thermal Image Curves (TU1024 Rev.1) Copyright 2018 Date 17.03.2022 Rev. Pag.

  • Page 36: Function: 1I> (First Overcurrent Element F50/51)

    MC2-30M MO-0495-ING Doc. N° 17.7 - Function: 1I> (First Overcurrent Element F50/51) Status Enab. [No / Yes] → Options f(t) Type - D [D / A / B / C / I / VI / EI / MI / SI ] →...

  • Page 37: Blocking Logic (Bo-Bi)

    MC2-30M MO-0495-ING Doc. N° 17.7.2 – Blocking Logic (BO-BI) For each Protection Function it is possible to activate a Blocking Logic allowing for inhibiting their operation by external signals supplied to the Digital Input. 17.7.2.1 – Output Blocking signal “BO”...

  • Page 38: Function: 2I> (Second Overcurrent Element F50/51)

    MC2-30M MO-0495-ING Doc. N° 17.8 – Function: 2I> (Second Overcurrent Element F50/51) Status Enab. [No / Yes] → Options [Off / 2tBO] → Disable [Disable / Enable] → Oper. Levels step 0.01 → (0.1 ÷ 40) Timers (0.02 ÷ 100) step 0.01...

  • Page 39: Function: 1Io> (First Earth Fault Element 50N/51N)

    MC2-30M MO-0495-ING Doc. N° 17.10 - Function: 1Io> (First Earth Fault Element 50N/51N) Status Enab. [No / Yes] → Options f(t) Type - D [D / A / B / C / I / VI / EI / MI / SI] →...

  • Page 40: Function: 3Io> (Third Earth Fault Element 50N/51N)

    MC2-30M MO-0495-ING Doc. N° 17.12 - Function: 3Io> (Third Earth Fault Element 50N/51N) Status Enab. [No / Yes] → Options [Off / 2tBO] → Oper.Levels 0.01 (0.01÷9.99) step 0.01 → Timers step 0.01 → (0.02÷100) 0.75 (0.05÷0.75) step 0.01 →...

  • Page 41: Function: 1Is> (First Negative Sequence Element F46)

    MC2-30M MO-0495-ING Doc. N° 17.13 - Function: 1Is> (First Negative Sequence Element F46) Status Enab. [No / Yes] → Options t(t) Type-D [D / A / B / C / I / VI / EI / MI / SI] →...

  • Page 42: Function: Motst (Motor Start)

    MC2-30M MO-0495-ING Doc. N° 17.15 - Function: MotSt (Motor Start) Oper.Levels (0.05 ÷ 1) step 0.01 → Timers tfst (0.02 ÷ 1) step 0.01 → (10 ÷ 120) step 0.01 → 17.15.1 - Description of variables Minimum operation level tfst Motor start filter time Motor starting time;...

  • Page 43: Function: Stseq (Starting Sequence Control)

    MC2-30M MO-0495-ING Doc. N° 17.18 - Function: StSeq (starting Sequence Control) Status Enab. [No / Yes] → Oper.Levels step → (0.1 ÷ 1) Timers (0.5 ÷ 50) step → 17.18.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 44: Function: Tcs (Trip Circuit Supervision)

    MC2-30M MO-0495-ING Doc. N° 17.20 - Function: TCS (Trip Circuit Supervision) Status Enab. [No / Yes] → Timers step 0.01 → (0.1 ÷ 100) 18.20.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable) Trip time delay 17.20.2 - Operation...

  • Page 45: Function: Irf (Internal Relay Fault)

    MC2-30M MO-0495-ING Doc. N° 17.21 - Function: IRF (Internal Relay Fault) In this menu it is possible to configurate the operation of the Relay Internal Fault detection element Status Enab. [No / Yes] → Timers tIRF (5 ÷ 200) step 0.01...

  • Page 46: Function: Oscillo (Oscillographic Recording)

    MC2-30M MO-0495-ING Doc. N° 17.23 - Function: Oscillo (Oscillographic Recording) Status Enab. [No / Yes] → Options Trig Trip [Start / Trip / OnCmd / REUserLg / FEUserLg] → Timers tPre (0.01 ÷ 2) step 0.01 → tPost (0.01 ÷ 8) step 0.01...

  • Page 47: Available On Software

    MC2-30M MO-0495-ING Doc. N° 17.23.3 – Available on software 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...

  • Page 48: Setting "User Trigger Oscillo

    MC2-30M MO-0495-ING Doc. N° 17.23.4 – Setting “User Trigger Oscillo” The “User trigger Oscillo” 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. 17.23.4.1 - Name Internal name 17.23.4.2 - User descr.

  • Page 49: Example: Setting "Oscillo Trigger Logic

    MC2-30M MO-0495-ING Doc. N° 17.24.5 – Example: Setting “Oscillo Trigger Logic” Open software program and connect to the relay. Select “Change Windows” from “Menu” button Select “User Variable” Setting for “User Trigger Oscillo” : “1I>/2I>/3I>”, “AND”, “1”, “Monostable”, “10”. 17.25.5.1 – “Linked Functions”...
  • Page 50 MC2-30M MO-0495-ING Doc. N° 17.20.5.2 – “Operation Logic” (Oplogic) Select “Oper Logic” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”: Insert “AND” into box and press “OK”: 17.20.5.3 – “Timer” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”:...
  • Page 51 MC2-30M MO-0495-ING Doc. N° 17.20.5.4 – “Timer type” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”: P” into box and Select “Monostable press “OK”: 17.20.5.5 – “Extra” Select “Extra” related to “User Trigger Oscillo” and press right button on mouse, Select “10”...

  • Page 52: Function: Cb Mngn (Control C/B)

    MC2-30M MO-0495-ING Doc. N° 17.24 - Function: CB Mngn (Control C/B) This menu allows to configurate the command for C/B operation. Options Ignored [Ignored / Active] → Enable [Disable / Enable] → Key0 None [None / P1 / P2 / P3 / P4 / P5 / P6] →...
  • Page 53 MC2-30M MO-0495-ING Doc. N° 17.24.2.2 – “User Variables” Select “User Variable”: Assign to: Type User descr. Linked Functions UserVar<0> UserVar<0> manOpCmd,Gen.Trip Manual Open Command, Generic Trip UserVar<1> UserVar<1> CL-Cmd Close Command 17.24.2.3 – “DO Configuration” Select “DO Configuration”: Assign to:...

  • Page 54: Function: Extrescfg (External Reset Configuration)

    MC2-30M MO-0495-ING Doc. N° 17.25 - Function: ExtResCfg (External Reset Configuration) This menu allows to select the edge polarity of the signal on the digital input configured to reset the relay after a trip (see 17.2 input ExtReset). The reset input will reset all the output relays configured as manual reset (latched), the signalisation of the trip on the display and the indication of the LED are cleared also.

  • Page 55: Example

    MC2-30M MO-0495-ING Doc. N° 18.2.1 – Example 18.2.1.1 – Name Logical Input name 18.2.1.2 – Status Logical Input status 18.2.1.3 – Functions Selection function 18.2.1.4 – Example: Setting “Digital Input” Open software program and connect to the relay. Select “Change Windows”...

  • Page 56: Physical Outputs

    MC2-30M MO-0495-ING Doc. N° 18.3 – Physical Outputs The output relay are fully user programmable and controlled by any protection functions and by any digital inputs. 0.R1 Programmable (R1) 0.R2 Programmable (R2) 0.R3 Programmable (R3) 0.R4 Programmable (R4) Available in the relay 0.R5...

  • Page 57: Functions - Operation Mode

    MC2-30M MO-0495-ING Doc. N° 18.4.2 - Functions - Operation Mode Automatic : In this mode the output relay is “operated” (energized if “N.D.”, denergized if “N.E.”) when the controlling Functional Output is activated and it is reset to the “non operated”...
  • Page 58 MC2-30M MO-0495-ING Doc. N° 18.4.2.1 - Example: Change settings for “0.R1” Change settings for “0.R1” : “1I>”, “Normally Deenergized”, “Automatic reset”, “0.5”. 18.4.2.2 - “Linked Functions” Select “Linked Functions” related to 0.R1 and press right button on mouse, select “Value change”:...

  • Page 59: Infostatus

    MC2-30M MO-0495-ING Doc. N° 18.4.2.4 - “Function” Select “Function” related to “0.R1” and press right button on mouse, select “Value change”: reset” from combo box Select “Manual and press “OK” (if Password is request, see § Password) 18.4.2.5 - “tON”...

  • Page 60: Date And Time

    MC2-30M MO-0495-ING Doc. N° 20. Date and Time In this menu it is possible to configurate the Date and Time Date: 20YY / MM / DD (2000/01/01 ÷ 2099/12/31) YY = Year / MM = Month / DD = Day...

  • Page 61: Clock Synchronization

    MC2-30M MO-0495-ING Doc. N° • As above for changing the “Hours” • Press “Next” to go to the next setting. • As above for changing the “Minutes” • Press “Next” to go to the next setting. • The Day of the Week is calculated and displayed automatically.

  • Page 62: Healthy (Diagnostic Information)

    MC2-30M MO-0495-ING Doc. N° 21. Healthy (Diagnostic Information) The relay operates a continuous checking of the vital functionalities and in case an internal failure is detected, the I.R.F. function (see § I.R.F.) is activated and the Power/IRF led is set to flashing.

  • Page 63: Wiring Diagram

    MC2-30M MO-0495-ING Doc. N° 24. Wiring Diagram 25. Overall Dimensions Copyright 2018 Date 17.03.2022 Rev. Pag.

  • Page 64: Electrical Characteristics

    This publication may be subject to alteration without prior notice. Therefore, a printed copy of this document may not be the latest revision. Please contact your local representative for the latest update. The trademarks MS Microelettrica Scientifica, Knorr and Knorr-Bremse as well as the figurative mark “K” are registered. Copyright ©...

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