Littelfuse MPS Manuale utente

MPS MANUAL

MOTOR PROTECTION SYSTEM

Revision 6-F-022117

Document Number: PM-1130-EN

Factory default password is 1111

New Password

See Section 4.3.6.

Motor Identification

Page ii

MPS Motor Protection System Rev. 6-F-022117

. Table of Contents

TABLE OF CONTENTS

SECTION PAGE

List of Figures ....................................................................... iv

List of Tables ........................................................................ iv

Disclaimer .............................................................................. v

1 Introduction.......................................................... 1-1

1.1 General .................................................................... 1-1

1.2 MPS Features.......................................................... 1-1

1.2.1 Protection .................................................... 1-1

1.2.2 Control – Starting Methods........................ 1-1

1.2.3 Metering...................................................... 1-1

1.2.4 Data Logging .............................................. 1-1

1.2.5 Inputs and Outputs...................................... 1-1

1.2.6 MPS-OPI Operator Interface ..................... 1-2

1.2.7 MPS-RTD Module ..................................... 1-2

1.2.8 MPS-DIF Differential Module................... 1-2

1.2.9 Communications Interface ......................... 1-2

1.3 Ordering Information.............................................. 1-2

2 Installation ............................................................. 2-1

2.1 General .................................................................... 2-1

2.2 MPS-CTU Control Unit ......................................... 2-1

2.3 MPS-OPI Operator Interface.................................. 2-1

2.4 MPS-RTD Module ................................................. 2-1

2.5 MPS-DIF Differential Module............................... 2-1

2.6 Earth-Fault CT’s ..................................................... 2-1

3 System Wiring....................................................... 3-1

3.1 General .................................................................... 3-1

3.2 Wiring Connections................................................ 3-1

3.2.1 MPS-CTU Connections ............................. 3-1

3.2.1.1 Supply Voltage .............................. 3-1

3.2.1.2 Current Inputs................................ 3-1

3.2.1.3 Voltage Inputs ............................... 3-1

3.2.1.3.1 Direct Connection........ 3-3

3.2.1.3.2 1-PT Connection.......... 3-3

3.2.1.3.3 2-PT Connection.......... 3-3

3.2.1.3.4 3-PT Connection.......... 3-3

3.2.1.4 Digital Inputs .................................3-3

3.2.1.4.1 DC Operation............... 3-4

3.2.1.4.2 AC Operation............... 3-4

3.2.1.4.3 Combined AC and

DC Operation ............................... 3-4

3.2.1.4.4 Tachometer

Input (HSI) ................................... 3-4

3.2.1.5 Analog Input (AN IN)................... 3-4

3.2.1.6 Analog Output (AN OUT)............ 3-4

3.2.1.7 PTC Input ...................................... 3-4

3.2.1.8 IRIG-B Input .................................3-4

3.2.1.9 I/O Module Communication......... 3-4

3.2.1.10 RS-485 Network

Communications......................................... 3-4

3.2.2 MPS-OPI Connections and

Address Selection ....................................... 3-4

3.2.3 MPS-RTD Connections and

Address Selection ....................................... 3-5

3.2.4 MPS-DIF Connections ............................... 3-5

3.2.4.1 Core Balance .................................3-5

TABLE OF CONTENTS

SECTION PAGE

3.2.4.2 MPS Summation............................3-5

3.2.4.3 DIF Summation .............................3-5

3.2.5 Dielectric-Strength Testing ........................3-5

4 Operation and Setup ............................................4-1

4.1 General ....................................................................4-1

4.2 MPS-CTU ...............................................................4-1

4.2.1 LED Indication ...........................................4-1

4.2.2 Reset Switch................................................4-1

4.2.3 Phase-CT Inputs..........................................4-1

4.2.4 Earth-Fault-CT Input ..................................4-2

4.2.5 Voltage Inputs.............................................4-2

4.2.6 Motor Data ..................................................4-2

4.2.7 Output Relay Assignment ..........................4-2

4.2.8 Digital Inputs 1 to 7 ....................................4-3

4.2.9 Tachometer Input (HSI) .............................4-4

4.2.10 Analog Output.............................................4-4

4.2.11 Analog Input ...............................................4-5

4.2.11.1 Metering only ..............................4-5

4.2.11.2 Protection.....................................4-5

4.2.11.3 Synchronize to ASD....................4-5

4.2.11.4 Motor Speed ................................4-5

4.2.12 Starter ..........................................................4-5

4.2.13 Protection ....................................................4-5

4.2.14 Miscellaneous Configuration .....................4-5

4.2.15 Network Communications..........................4-5

4.3 MPS-OPI.................................................................4-5

4.3.1 General ........................................................4-5

4.3.2 Configuring the MPS-CTU for

OPI Operation .............................................4-5

4.3.3 Starter Control.............................................4-6

4.3.3.1 OPI Control....................................4-6

4.3.3.2 Local Control.................................4-6

4.3.3.3 Remote Control .............................4-6

4.3.4 Metering ......................................................4-7

4.3.5 Messages .....................................................4-7

4.3.5.1 Trip Reset.......................................4-7

4.3.5.2 Status..............................................4-7

4.3.5.3 Data Logging .................................4-9

4.3.5.4 Statistical Data ...............................4-9

4.3.5.5 Emergency Thermal Reset............4-9

4.3.6 Password Entry and Programming.............4-9

4.4 MPS-RTD .............................................................4-10

4.5 MPS-DIF...............................................................4-10

4.6 Waveform Capture ...............................................4-10

5 Protective Functions......................................... 5-1

5.1 General ............................................................... 5-1

5.2 Overload............................................................. 5-1

5.2.1 Thermal Model ....................................... 5-1

5.2.2 Locked-Rotor Times ............................... 5-4

5.2.3 Emergency Thermal Reset...................... 5-4

5.3 Overcurrent ........................................................ 5-4

5.4 Auxiliary Overcurrent ........................................ 5-5

5.5 Reduced Overcurrent ......................................... 5-5

5.6 Jam ..................................................................... 5-5

5.7 Earth Fault.......................................................... 5-5

Page iii

MPS Motor Protection System Rev. 6-F-022117

. Table of Contents

SECTION PAGE

5.8 Current Unbalance.............................................. 5-5

5.9 Phase Loss—Current.......................................... 5-6

5.10 Phase Reverse—Current..................................... 5-6

5.11 Undercurrent....................................................... 5-6

5.12 Overvoltage ........................................................ 5-6

5.13 Voltage Unbalance ............................................. 5-6

5.14 Phase Loss—Voltage ......................................... 5-6

5.15 Phase Reverse—Voltage .................................... 5-6

5.16 Undervoltage ...................................................... 5-7

5.17 Underpower........................................................ 5-7

5.18 Reversepower ..................................................... 5-7

5.19 Power Factor—Quadrant 4................................. 5-7

5.20 Power Factor—Quadrant 3................................. 5-7

5.21 Underfrequency.................................................. 5-7

5.22 Overfrequency.................................................... 5-8

5.23 Starts per Hour/Time Between Starts................. 5-8

5.24 Failure to Accelerate and Underspeed................ 5-8

5.25 Differential Current Protection........................... 5-9

5.26 PTC Temperature ............................................... 5-9

5.27 RTD Temperature .............................................. 5-9

5.28 Hot-Motor Compensation ................................ 5-10

5.29 Analog Input..................................................... 5-10

5.29.1 Protection .............................................. 5-10

5.29.2 Synchronize to ASD ............................. 5-10

5.29.3 Motor Speed.......................................... 5-10

5.29.4 Metering Only....................................... 5-10

6 Starter Functions.............................................. 6-1

6.1 General ............................................................... 6-1

6.2 Starter Timing Sequences................................... 6-4

6.3 Full-Voltage Non-Reversing Starter .................. 6-7

6.4 Adjustable-Speed Drive ..................................... 6-7

6.5 Soft-Start Starter................................................. 6-7

6.6 Full-Voltage Reversing Starter........................... 6-8

6.7 Two-Speed Starter.............................................. 6-8

6.8 Reactor or Resistor Closed-Transition

Starter ............................................................... 6-10

6.9 Slip-Ring Starter............................................... 6-10

6.10 Part-Winding and Double-Delta Starters ......... 6-11

6.11 Soft-Start-With-Bypass Starter ........................ 6-12

6.12 Reactor or Resistor Open-Transition Starter.... 6-12

6.13 Two-Winding Starter........................................ 6-12

6.14 Wye-Delta Open-Transition Starter ................. 6-12

6.15 Autotransformer Closed-Transition Starter...... 6-13

6.16 Wye-Delta Closed-Transition Starter............... 6-13

7 Theory of Operation......................................... 7-1

7.1 Signal-Processing Algorithms............................ 7-1

7.2 Power Algorithm ................................................ 7-1

7.3 Operator Interface (MPS-OPI) ........................... 7-1

7.4 RTD Module (MPS-RTD) ................................. 7-1

7.5 Differential Module (MPS-DIF) ........................ 7-1

7.6 Firmware Diagnostics ........................................ 7-1

8 Communications............................................... 8-1

8.1 Personal-Computer Interface.............................. 8-1

8.1.1 Firmware Upgrade .................................. 8-1

8.1.2 SE-Comm-RIS ........................................ 8-1

SECTION PAGE

8.2 Network Interface............................................... 8-1

8.2.1 RS-485 Communications........................ 8-1

8.2.2 DeviceNet Communications ................... 8-1

8.2.3 Ethernet Communications....................... 8-1

8.2.4 Profibus Communications....................... 8-1

9 Technical Specifications................................... 9-1

9.1 Control Unit (MPS-CTU) .................................. 9-1

9.2 Operator Interface (MPS-OPI)........................... 9-3

9.3 RTD Module (MPS-RTD) ................................. 9-3

9.4 Differential Module (MPS-DIF) ........................ 9-4

10 Warranty........................................................... 9-5

Appendix A MPS-OPI Menu Map............................ A-1

Appendix B MPS Set-Up Record .............................. B-1

Appendix C MPS Modbus Protocol.......................... C-1

Appendix D MPS A-B DF1 Protocol......................... D-1

Appendix E Communications Database Table .........E-1

Appendix F Register Formats ....................................F-1

Appendix G MPS Revision History .......................... G-1

Page iv

MPS Motor Protection System Rev. 6-F-022117

. Table of Contents

LIST OF FIGURES

FIGURE PAGE

1.1 Motor Protection System Block Diagram ............. 1-3

1.2 MPS Ordering Information .................................... 1-4

2.1 MPS-CTU Outline and Mounting Details............. 2-2

2.1.1 MPS-CTU-XX-X1 Ring Terminal

Outline and Mounting Details................................ 2-3

2.2 MPS-OPI Outline and Mounting Details............... 2-4

2.3 MPS-CTU with OPI Outline and

Mounting Details .................................................... 2-5

2.3.1 MPS-CTU Ring Terminal with OPI Outline and

Mounting Details .................................................... 2-6

2.4 SE-IP65CVR-M Weatherproof Cover Outline .. 2-7

2.5 SE-IP65CVR-M Weatherproof Cover

Installation .......................................................... 2-8

2.6 MPS-RTD Outline and Mounting Details............. 2-9

2.7 MPS-DIF Outline and Mounting Details.............2-10

2.8 EFCT-1 Outline and Mounting Details ............... 2-11

2.9 EFCT-2 Outline and Mounting Details ............... 2-12

2.10 EFCT-26 and SE-CS30-26 Outline and

Mounting Details ..................................................2-13

2.11 SE-CS30-70 Outline and Mounting Details ........2-14

2.12 SE-CS30-4, -5, and -8 Outline and Mounting

Details ...................................................................2-15

3.1 Residual Phase-CT Connection ............................. 3-1

3.2 Typical MPS Connection Diagram........................ 3-2

3.3 Direct Connection................................................... 3-3

3.4 1-PT Connection..................................................... 3-3

3.5 2-PT Connection..................................................... 3-3

3.6 3-PT Connection..................................................... 3-3

3.7 Digital Tachometer Input (HSI)............................. 3-4

3.8 Address Selection Switch Detail............................ 3-5

3.9 Two Examples of I/O Module Connections.......... 3-6

3.10 MPS-RTD Connection Diagram............................ 3-7

3.11 Core Balance Connection....................................... 3-8

3.12 MPS Summation Connection................................. 3-8

3.13 DIF Summation Connection .................................. 3-9

4.1 Menu Example........................................................ 4-1

4.2 Menu Symbols........................................................ 4-1

4.3 MPS-OPI Interface ................................................. 4-6

5.1 Class-20 Overload Curve ....................................... 5-3

5.2 Asymmetrical-Current Multipliers......................... 5-5

5.3 Used I2t Bias Curve ..............................................5-10

6.1 Typical 3-Wire Control .......................................... 6-3

6.2 Typical 2-Wire Control .......................................... 6-4

6.3 Starter Sequence 1 .................................................. 6-4

6.4 Starter Sequence 2 .................................................. 6-4

6.5 Starter Sequence 3 .................................................. 6-5

6.6 Starter Sequence 4 .................................................. 6-5

6.7 Starter Sequence 5 .................................................. 6-6

6.8 Starter Sequence 6 .................................................. 6-6

6.9 Full-Voltage Non-Reversing-Starter

Connection .............................................................. 6-7

6.10 Adjustable-Speed-Drive Connection ..................... 6-7

6.11 Soft-Start-Starter Connection................................. 6-7

LIST OF FIGURES

FIGURE .............................................. PAGE

6.12 Full-Voltage-Reversing-Starter Connection..........6-8

6.13 Two-Speed Two-Winding-Starter Connection......6-8

6.14 Two-Speed Constant- and Variable-Torque-

Starter Connections.................................................6-9

6.15 Two-Speed Constant-Horsepower-Starter

Connection...............................................................6-9

6.16 Reactor or Resistor-Starter Connection................6-10

6.17 Slip-Ring-Starter Connection................................6-10

6.18 Part-Winding and Double-Delta-Starter

Connections ...........................................................6-11

6.19 Soft-Start-With-Bypass-Starter Connection.........6-12

6.20 Two-Winding-Starter Connection ........................6-13

6.21 Wye-Delta Open-Transition-Starter

Connection.............................................................6-14

6.22 Autotransformer Closed-Transition-Starter

Connection.............................................................6-14

6.23 Wye-Delta Closed-Transition-Starter

Connection.............................................................6-15

LIST OF TABLES

TABLE PAGE

3.1 MPS-OPI Address Selection...................................3-4

3.2 MPS-RTD Address Selection .................................3-5

4.1 Output-Relay Functions ..........................................4-2

4.2 Digital-Input Functions ...........................................4-3

4.3 Analog-Output Parameters......................................4-4

4.4 Metering Display.....................................................4-8

4.5 Status Messages.......................................................4-8

5.1 Trip Time.................................................................5-4

5.2 Fault Duration Required for Trip............................5-4

6.1 Start-Source Summary ............................................6-1

6.2 Starter Summary......................................................6-3

Page v

MPS Motor Protection System Rev. 6-F-022117

. Table of Contents

DISCLAIMER

Specifications are subject to change without notice.

Littelfuse Startco is not liable for contingent or

consequential damages, or for expenses sustained as a result

of incorrect application, incorrect adjustment, or a

malfunction.

Page 1-1

MPS Motor Protection System Rev. 6-F-022117

Introduction

1. INTRODUCTION

1.1 GENERAL

The Littelfuse Startco Motor Protection System (MPS)

is a modular system with integrated protection, control,

metering, and data-logging functions. The Control Unit

(MPS-CTU) is the core module. It can operate as a stand-

alone unit or with the Operator Interface (MPS-OPI),

RTD Modules (MPS-RTD), and Differential Module

(MPS-DIF). The CTU can be programmed using the OPI

or the communications network. Programmable inputs

and outputs provide a flexible hardware platform and

custom software can be easily loaded from a PC to the

CTU’s flash memory. The MPS block diagram is shown

in Fig. 1.1.

1.2 MPS FEATURES

1.2.1 PROTECTION

•Overload (49, 51)

•Overcurrent (50, 51)

•Earth fault (50G/N, 51G/N)

•Unbalance (voltage and current) (46, 47)

•Phase loss (voltage and current) (46, 47)

•Phase reverse (voltage and current) (46, 47)

•Jam

•Undercurrent (37)

•Failure to accelerate

•Underspeed (14)

•Overvoltage (59)

•Undervoltage (27)

•Underpower (37)

•Reversepower (32)

•Power factor (55)

•Overfrequency (81)

•Underfrequency (81)

•PTC overtemperature (49)

•RTD temperature (38, 49)

•Starts per Hour (66)

•Differential (87)

1.2.2 CONTROL—STARTING METHODS (1)

•Non-reversing

•Reversing

•Soft start

•Soft start with bypass

•Adjustable-speed drive

•Two speed

•Wye-delta (open or closed transition)

•Reactor (open or closed transition)

•Resistor (open or closed transition)

•Autotransformer

•Part winding

•Slip ring

•Two winding

•Double delta

(1) Only three CT’s required for all starting methods.

1.2.3 METERING

•Line currents

•Current unbalance

•Positive-sequence current

•Negative-sequence current

•Earth-leakage current

•Differential currents

•Line-to-line voltages

•Line frequency

•Voltage unbalance

•Positive-sequence voltage

•Negative-sequence voltage

•Power

§Apparent, Reactive, Real, and Power factor

•Energy

§kWh, kVAh, and kVARh

•Used thermal capacity

•Thermal trend

•Motor speed

•RTD temperatures

•Analog input and output

1.2.4 DATA LOGGING

•Sixty-four records

§Date and time of event

§Event type

§Line currents

§Current unbalance

§Earth-leakage current

§Differential currents

§Line-to-line voltages

§Voltage unbalance

§Thermal capacity

§Thermal capacity used during starts

§Start time

§Analog-input value

§Frequency

§Power (P, S, Q, PF)

§RTD temperatures

§Trip counters

§Running hours

§Waveform Capture

§5 seconds of pre-trip waveform data

§16 samples per cycle

§COMTRADE and CSV file generation

1.2.5 INPUTS AND OUTPUTS

•Three ac-current inputs

•Three ac-voltage inputs

•Earth-leakage-current input

•Seven programmable digital (ac/dc) inputs

•24-Vdc source for digital inputs

•Tachometer (high-speed pulse) input

•4-20-mA analog input

•4-20-mA analog output

•PTC thermistor temperature input

Page 1-2

MPS Motor Protection System Rev. 6-F-022117

Introduction

•Up to twenty-four RTD inputs

•Five programmable output relays

•Network communications

•IRIG-B time-code input

1.2.6 MPS-OPI OPERATOR INTERFACE

•4 x 20 vacuum-fluorescent display

•Starter-control keys

•Display-control and programming keys

•LED status indication

•Remote operation up to 1.2 km (4,000’)

•Powered by MPS-CTU

1.2.7 MPS-RTD MODULE

•Eight inputs per module

•Individually selectable RTD types

•RTD Voting

•Solid-state multiplexing

•Up to three modules per system

•Remote operation up to 1.2 km (4,000’)

•Powered by MPS-CTU

1.2.8 MPS-DIF DIFFERENTIAL MODULE

•3-CT core-balance connection

•6-CT summation connection

•Remote operation up to 1.2 km (4,000’)

•Powered by MPS-CTU

1.2.9 COMMUNICATIONS INTERFACE

The standard network communication interface is an

RS-485 port with Modbus®RTU and A-B®DF1 protocol

support. In addition to the standard interface, network

communication options include DeviceNet™, Profibus®,

Modbus®TCP, and Ethernet/IP.

1.3 ORDERING INFORMATION

See Fig. 1.2 for MPS-CTU, MPS-OPI, MPS-RTD, and

MPS-DIF model numbers.

Earth-Fault Current Sensors:

EFCT-1 ......................... Earth-Fault CT,

5-A-primary rating,

82 mm (3.2”) window

EFCT-1FC..................... Flux Conditioner for EFCT-1,

70 mm (2.7”) window

EFCT-2 ......................... Earth-Fault CT with

Flux Conditioner,

5-A-primary rating,

139 mm (5.5”) window

EFCT-26 .......................Earth-Fault CT,

5-A-primary rating,

26 mm (1”) window

(All EFCT’s include 6 m (19.5’) of 22 AWG (0.33 mm2)

shielded cable.)

SE-CS30-4 ............................. Current Sensor,

30-A-primary rating,

c/w Flux Conditioner,

95.0 mm (3.7”) window

SE-CS30-5 ............................. Current Sensor,

30-A-primary rating,

c/w Flux Conditioner,

130.0 mm (5.1”) window

SE-CS30-8 ............................. Current Sensor

30-A-primary rating,

c/w Flux Conditioner,

200.0 mm (7.9”) window

SE-CS30-26......................... Current Sensor,

30-A-primary rating,

26 mm (1.0”) window

SE-CS30-70......................... Current Sensor,

30-A-primary rating,

70 mm (2.7”) window

Phase CT’s............................... Protection-Class CT’s,

Contact factory

Accessories:

SE-IP65CVR-M................... Hinged Transparent OPI

Cover

SE-485-PP............................ Port-Powered Serial

Converter

SE-485-DIN ......................... Serial Converter,

Industrial, 24 Vdc

Software:

SE-Comm-RIS ..................... PC Communication

Software(1)

SE-Flash............................... Firmware Upgrade

Software(1)

(1) Available at www.littelfuse.com/relayscontrols.

Page 1-3

MPS Motor Protection System Rev. 6-F-022117

Introduction

FIGURE 1.1 Motor Protection System Block Diagram.

Page 1-4

MPS Motor Protection System Rev. 6-F-022117

Introduction

FIGURE 1.2 MPS Ordering Information.

Indice

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