Danfoss MCD 500 Operating guide

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Operating Guide

VLT® Soft Starter MCD 500

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Contents Operating Guide

Contents

1 Introduction

2 Safety

2.1 Safety

3 Installation

3.1 Mechanical Installation

3.2 Dimensions and Weight

4 Electrical Installation

4.1 Control Wiring

4.1.1 Ways to Control the Soft Starter 16

4.1.2 Control Terminals 16

4.1.3 Remote Inputs 16

4.1.4 Serial Communication 17

4.1.5 Ground Terminal 17

4.1.6 Power Terminations 17

4.1.7 Finger Guard Kit 18

4.2 Power Input and Output Congurations

4.2.1 Internally Bypassed Models (MCD5-0021B to MCD5-0961B) 18

4.2.2 MCD5-0245C 19

4.2.3 MCD5-0360C to MCD5-1600C 19

4.3 Motor Connection

4.3.1 Testing the Installation 20

4.3.2 In-line Installation 20

4.3.2.1 Internally Bypassed 20

4.3.2.2 Non-bypassed 20

4.3.2.3 Externally Bypassed 20

4.3.3 Inside Delta Installation 21

4.3.3.1 Internally Bypassed 21

4.3.3.2 Non-bypassed 22

4.3.3.3 Externally Bypassed 22

4.4 Current Ratings

4.4.1 In-line Connection (Bypassed) 24

4.4.2 In-line Connection (Non-bypassed/Continuous) 25

4.4.3 Inside Delta Connection (Bypassed) 26

4.4.4 Inside Delta Connection (Non-bypassed/Continuous) 27

4.5 Minimum and Maximum Current Settings

4.6 Bypass Contactor

4.7 Main Contactor

Contents

VLT® Soft Starter MCD 500

4.8 Circuit Breaker

4.9 Power Factor Correction

4.10 Fuses

4.10.1 Power Supply Fuses 29

4.10.2 Bussmann Fuses 30

4.10.3 Ferraz Fuses 32

4.10.4 UL Fuse Selection and Short Circuit Ratings 34

4.11 Schematic Diagrams

5 Product Features

5.1 Motor Overload Protection

5.2 Adaptive Control

5.3 Starting Modes

5.3.1 Constant Current 40

5.3.2 Current Ramp 40

5.3.3 Adaptive Control 40

5.3.4 Kick-start 41

5.4 Stopping Modes

5.4.1 Coast to Stop 41

5.4.2 TVR Soft Stop 41

5.4.3 Adaptive Control 42

5.4.4 Pump Stopping 42

5.4.5 Brake 42

5.5 Jog Operation

5.6 Inside Delta Operation

5.7 Typical Start Currents

5.8 Installation with Main Contactor

5.9 Installation with Bypass Contactor

5.10 Emergency Run Operation

5.11 Auxiliary Trip Circuit

5.12 DC Brake with External Zero-speed Sensor

5.13 Soft Braking

5.14 Two-speed Motor

6 Operation

6.1 Control Methods

6.2 Operation and LCP

6.2.1 Operating Modes 55

6.3 Remote-mounted LCP

6.3.1 Synchronizing the LCP and the Soft Starter 56

6.4 Welcome Screen

Contents Operating Guide

6.5 Local Control Keys

6.6 Displays

6.6.1 Temperature Monitoring Screen (S1) 57

6.6.2 Programmable Screen (S2) 57

6.6.3 Average Current (S3) 57

6.6.4 Current Monitoring Screen (S4) 57

6.6.5 Frequency Monitoring Screen (S5) 57

6.6.6 Motor Power Screen (S6) 57

6.6.7 Last Start Information (S7) 57

6.6.8 Date and Time (S8) 57

6.6.9 SCR Conduction Bar Graph 58

6.6.10 Performance Graphs 58

7 Programming

7.1 Access Control

7.2 Quick Menu

7.2.1 Quick Set-up 59

7.2.2 Application Set-up Examples 60

7.2.3 Loggings 61

7.3 Main Menu

7.3.1 Parameters 61

7.3.2 Parameter Shortcut 61

7.3.3 Parameter List 62

8 Parameter Descriptions

8.1 Primary Motor Settings

8.1.1 Brake 64

8.2 Protection

8.2.1 Current Imbalance 65

8.2.2 Undercurrent 65

8.2.3 Instant Overcurrent 65

8.2.4 Frequency Trip 65

8.3 Inputs

8.4 Outputs

8.4.1 Relay A Delays 67

8.4.2 Relays B and C 67

8.4.3 Low Current Flag and High Current Flag 68

8.4.4 Motor Temperature Flag 68

8.4.5 Analog Output A 68

8.5 Start/Stop Timers

8.6 Auto-reset

Contents

VLT® Soft Starter MCD 500

8.6.1 Auto-reset Delay 70

8.7 Secondary Motor Set

8.8 Display

8.8.1 User-programmable Screen 71

8.8.2 Performance Graphs 72

8.9 Restricted Parameters

8.10 Protection Action

8.11 Factory Parameters

9 Tools

9.1 Set Date and Time

9.2 Load/Save Settings

9.3 Reset Thermal Model

9.4 Protection Simulation

9.5 Output Signal Simulation

9.6 Digital I/O State

9.7 Temp Sensors State

9.8 Alarm Log

9.8.1 Trip Log 77

9.8.2 Event Log 77

9.8.3 Counters 77

10 Troubleshooting

10.1 Trip Messages

10.2 General Faults

11 Specications

11.1 UL-compliant Installation

11.1.1 Models MCD5-0021B to MCD5-0105B 86

11.1.2 Models MCD5-0131B to MCD5-0215B 86

11.1.3 Models MCD5-0245B to MCD5-0396B 86

11.1.4 Models MCD5-0245C 86

11.1.5 Models MCD5-0360C to MCD5-1600C 87

11.1.6 Models MCD5-0469B to MCD5-0961B 87

11.1.7 Pressure Terminal/Connector Kits 87

11.2 Accessories

11.2.1 LCP Remote Mounting Kit 87

11.2.2 Communication Modules 87

11.2.3 PC Software 87

11.2.4 Finger Guard Kit 88

11.2.5 Surge Protection Kit (Lightning Protection) 88

Contents Operating Guide

12 Busbar Adjustment Procedure (MCD5-0360C to MCD5-1600C)

13 Appendix

13.1 Symbols, Abbreviations, and Conventions

Index

Introduction

VLT® Soft Starter MCD 500

1 Introduction

The VLT® Soft Starter MCD 500 is an advanced digital soft start solution for 11–850 kW (15–1150 hp) motors. The soft starters provide a complete range of motor and system protection features and are designed for reliable performance in the most demanding installation situations.

1.1.1 Document Version

This operating guide is regularly reviewed and updated. All suggestions for improvement are welcome. Table 1.1 shows the document version.

Edition Remarks

MG17K8xx Instruction about using nger guard kits for IP00

installations added to chapter 4 Electrical Installation.

Table 1.1 Document Version

1.1.2 Feature List

Models for all connection requirements

21–1600 A (in-line connection).

•

In-line or inside delta connection.

•

Internally bypassed up to 961 A.

•

Mains voltage: 200–525 V AC or 380–690 V AC.

•

Control voltage: 24 V AC/V DC, 110–120 V AC, or

•

220–240 V AC.

User-friendly LCP

Loggings.

•

Real-time graphs.

•

SCR conduction bar graph.

•

Tools

Application set-ups.

•

Date and time stamped event log with 99 entries.

•

8 most recent trips.

•

Counters.

•

Protection simulation.

•

Output signal simulation.

•

Inputs and outputs

Local or remote control input options.

•

(3 x xed, 1 x programmable).

Relay outputs (3 x programmable).

•

Analog programmable output.

•

24 V DC 200 mA supply output.

•

Start and run modes

Adaptive control.

•

Constant current.

•

Current ramp.

•

Kick-start.

•

Jog.

•

Emergency run operation.

•

Stop modes

Adaptive deceleration control.

•

Timed voltage ramp soft stop.

•

DC brake.

•

Soft brake.

•

Starter disable.

•

Other features

Autostart/stop timer.

•

Second-order thermal model.

•

Introduction Operating Guide

Battery back-up of clock and thermal model.

•

Optional DeviceNet, Modbus, Ethernet, or

•

PROFIBUS communication modules.

Comprehensive protection

Wiring/connection/supply.

•

- Motor connection.

- Phase sequence.

- Power loss.

- Individual phase loss.

- Mains frequency.

Current

•

- Excess start time.

- Current imbalance.

- Undercurrent.

Thermal

•

Communication

•

External

•

Starter

•

- Instant overcurrent.

- Motor thermistor.

- Motor overload.

- Bypass contactor overload.

- Heat sink temperature.

- Network comms.

- Starter comms.

- Input trip.

- Individually short-circuited SCR.

- Battery/clock.

1 1

MCD 5

- -

0021 = 21 A, AC53b 3-30:330 0037 = 37 A, AC53b 3-30:330 0043 = 43 A, AC53b 3-30:330 0053 = 53 A, AC53b 3-30:330

0068 = 68 A, AC53b 3-30:570 0084 = 84 A, AC53b 3-30:570

0089 = 89 A, AC53b 3-30:570 0105 = 105 A, AC53b 3-30:570 0131 = 131 A, AC53b 3-30:570 0141 = 141 A, AC53b 3-30:570 0195 = 195 A, AC53b 3-30:570 0215 = 215 A, AC53b 3-30:570 0245 = 245 A, AC53b 3-30:570 0331 = 331 A, AC53b 3-30:570 0396 = 396 A, AC53b 3-30:570 0469 = 469 A, AC53b 3-30:570 0525 = 525 A, AC53b 3-30:570 0632 = 632 A, AC53b 3-30:570 0744 = 744 A, AC53b 3-30:570 0826 = 826 A, AC53b 3-30:570

0961 = 961 A, AC53b 3-30:570

00 = IP00 20 = IP20

G1 = 0021 ~ 0105 A G2 = 0131 ~ 0215 A G3 = 0245 ~ 0396 A G4 = 0360 ~ 0961 A G5 = 1200 ~ 1600 A

0245 = 245 A, AC53a 3-30:50-6 0360 = 360 A, AC53a 3-30:50-6 0380 = 380 A, AC53a 3-30:50-6 0428 = 428 A, AC53a 3-30:50-6 0595 = 595 A, AC53a 3-30:50-6 0619 = 619 A, AC53a 3-30:50-6 0790 = 790 A, AC53a 3-30:50-6

0927 = 927 A,AC53a 3-30:50-6

1200 = 1200 A, AC53a 3-30:50-6 1410 = 1410 A, AC53a 3-30:50-6 1600 = 1600 A, AC53a 3-30:50-6

177HA382.11

Current rating

B = Bypassed

C = Non-bypassed

Mains voltage T5 = 200 - 525 VAC T7 = 380 - 690 VAC

Frame size

= Not selectable

Not used

IP rating

Control voltage

CV1 = 24 VAC/VDC

CV2 = 110-120 VAC or 220-240 VAC

Introduction

VLT® Soft Starter MCD 500

1.1.3 Type Code

Illustration 1.1 Type Code Ordering Form

Introduction Operating Guide

1.1.4 Ordering Numbers

Supply voltage T5, 200–525 V AC

Control supply CV1, 24 V AC/V DC CV2, 110–120 or 220–240 V AC

Ordering

G1B

G2B

G3C MCD5-0245C 175G5512 MCD5-0245C-T5-G3X-00-CV1 175G5537 MCD5-0245C-T5-G3X-00-CV2

G3B

G4B

G4C

G5C

Ampere rating

MCD5-0021B 175G5500 MCD5-0021B-T5-G1X-20-CV1 175G5525 MCD5-0021B-T5-G1X-20-CV2

MCD5-0037B 175G5501 MCD5-0037B-T5-G1X-20-CV1 175G5526 MCD5-0037B-T5-G1X-20-CV2

MCD5-0043B 175G5502 MCD5-0043B-T5-G1X-20-CV1 175G5527 MCD5-0043B-T5-G1X-20-CV2

MCD5-0053B 175G5503 MCD5-0053B-T5-G1X-20-CV1 175G5528 MCD5-0053B-T5-G1X-20-CV2

MCD5-0068B 175G5504 MCD5-0068B-T5-G1X-20-CV1 175G5529 MCD5-0068B-T5-G1X-20-CV2

MCD5-0084B 175G5505 MCD5-0084B-T5-G1X-20-CV1 175G5530 MCD5-0084B-T5-G1X-20-CV2

MCD5-0089B 175G5506 MCD5-0089B-T5-G1X-20-CV1 175G5531 MCD5-0089B-T5-G1X-20-CV2

MCD5-0105B 175G5507 MCD5-0105B-T5-G1X-20-CV1 175G5532 MCD5-0105B-T5-G1X-20-CV2

MCD5-0131B 175G5508 MCD5-0131B-T5-G2X-00-CV1 175G5533 MCD5-0131B-T5-G2X-00-CV2

MCD5-0141B 175G5509 MCD5-0141B-T5-G2X-00-CV1 175G5534 MCD5-0141B-T5-G2X-00-CV2

MCD5-0195B 175G5510 MCD5-0195B-T5-G2X-00-CV1 175G5535 MCD5-0195B-T5-G2X-00-CV2

MCD5-0215B 175G5511 MCD5-0215B-T5-G2X-00-CV1 175G5536 MCD5-0215B-T5-G2X-00-CV2

MCD5-0245B 134N9344 MCD5-0245B-T5-G3X-00-CV1 134N9345 MCD5-0245B-T5-G3X-00-CV2

MCD5-0331B 134N9348 MCD5-0331B-T5-G3X-00-CV1 134N9349 MCD5-0331B-T5-G3X-00-CV2

MCD5-0396B 134N9352 MCD5-0396B-T5-G3X-00-CV1 134N9353 MCD5-0396B-T5-G3X-00-CV2

MCD5-0469B 134N9356 MCD5-0469B-T5-G4X-00-CV1 134N9357 MCD5-0469B-T5-G4X-00-CV2

MCD5-0525B 134N9360 MCD5-0525B-T5-G4X-00-CV1 134N9361 MCD5-0525B-T5-G4X-00-CV2

MCD5-0632B 134N9364 MCD5-0632B-T5-G4X-00-CV1 134N9365 MCD5-0632B-T5-G4X-00-CV2

MCD5-0744B 134N9368 MCD5-0744B-T5-G4X-00-CV1 134N9369 MCD5-0744B-T5-G4X-00-CV2

MCD5-0826B 134N9372 MCD5-0826B-T5-G4X-00-CV1 134N9373 MCD5-0826B-T5-G4X-00-CV2

MCD5-0961B 134N9376 MCD5-0961B-T5-G4X-00-CV1 134N9377 MCD5-0961B-T5-G4X-00-CV2

MCD5-0360C 175G5513 MCD5-0360C-T5-G4X-00-CV1 175G5538 MCD5-0360C-T5-G4X-00-CV2

MCD5-0380C 175G5514 MCD5-0380C-T5-G4X-00-CV1 175G5539 MCD5-0380C-T5-G4X-00-CV2

MCD5-0428C 175G5515 MCD5-0428C-T5-G4X-00-CV1 175G5540 MCD5-0428C-T5-G4X-00-CV2

MCD5-0595C 175G5516 MCD5-0595C-T5-G4X-00-CV1 175G5541 MCD5-0595C-T5-G4X-00-CV2

MCD5-0619C 175G5517 MCD5-0619C-T5-G4X-00-CV1 175G5542 MCD5-0619C-T5-G4X-00-CV2

MCD5-0790C 175G5518 MCD5-0790C-T5-G4X-00-CV1 175G5543 MCD5-0790C-T5-G4X-00-CV2

MCD5-0927C 175G5519 MCD5-0927C-T5-G4X-00-CV1 175G5544 MCD5-0927C-T5-G4X-00-CV2

MCD5-1200C 175G5520 MCD5-1200C-T5-G5X-00-CV1 175G5545 MCD5-1200C-T5-G5X-00-CV2

MCD5-1410C 175G5523 MCD5-1410C-T5-G5X-00-CV1 175G5546 MCD5-1410C-T5-G5X-00-CV2

MCD5-1600C 175G5524 MCD5-1600C-T5-G5X-00-CV1 175G5547 MCD5-1600C-T5-G5X-00-CV2

number Type code

Ordering

number Type code

1 1

Table 1.2 Ordering Numbers, T5, 200–525 V AC

Introduction

VLT® Soft Starter MCD 500

G1B

G2B

G3C MCD5-0245C 175G5560 MCD5-0245C-T7-G3X-00-CV1 175G5583 MCD5-0245C-T7-G3X-00-CV2

G3B

G4B

G4C

G5C

Supply voltage T7, 380–690 V AC

Control supply CV1, 24 V AC/V DC CV2, 110–120 or 220–240 V AC

Ordering

Ampere rating

MCD5-0021B 175G5548 MCD5-0021B-T7-G1X-20-CV1 175G5571 MCD5-0021B-T7-G1X-20-CV2

MCD5-0037B 175G5549 MCD5-0037B-T7-G1X-20-CV1 175G5572 MCD5-0037B-T7-G1X-20-CV2

MCD5-0043B 175G5550 MCD5-0043B-T7-G1X-20-CV1 175G5573 MCD5-0043B-T7-G1X-20-CV2

MCD5-0053B 175G5551 MCD5-0053B-T7-G1X-20-CV1 175G5574 MCD5-0053B-T7-G1X-20-CV2

MCD5-0068B 175G5552 MCD5-0068B-T7-G1X-20-CV1 175G5575 MCD5-0068B-T7-G1X-20-CV2

MCD5-0084B 175G5553 MCD5-0084B-T7-G1X-20-CV1 175G5576 MCD5-0084B-T7-G1X-20-CV2

MCD5-0089B 175G5554 MCD5-0089B-T7-G1X-20-CV1 175G5577 MCD5-0089B-T7-G1X-20-CV2

MCD5-0105B 175G5555 MCD5-0105B-T7-G1X-20-CV1 175G5578 MCD5-0105B-T7-G1X-20-CV2

MCD5-0131B 175G5556 MCD5-0131B-T7-G2X-00-CV1 175G5579 MCD5-0131B-T7-G2X-00-CV2

MCD5-0141B 175G5557 MCD5-0141B-T7-G2X-00-CV1 175G5580 MCD5-0141B-T7-G2X-00-CV2

MCD5-0195B 175G5558 MCD5-0195B-T7-G2X-00-CV1 175G5581 MCD5-0195B-T7-G2X-00-CV2

MCD5-0215B 175G5559 MCD5-0215B-T7-G2X-00-CV1 175G5582 MCD5-0215B-T7-G2X-00-CV2

MCD5-0245B 134N9346 MCD5-0245B-T7-G3X-00-CV1 134N9347 MCD5-0245B-T7-G3X-00-CV2

MCD5-0331B 134N9350 MCD5-0331B-T7-G3X-00-CV1 134N9351 MCD5-0331B-T7-G3X-00-CV2

MCD5-0396B 134N9354 MCD5-0396B-T7-G3X-00-CV1 134N9355 MCD5-0396B-T7-G3X-00-CV2

MCD5-0469B 134N9358 MCD5-0469B-T7-G4X-00-CV1 134N9359 MCD5-0469B-T7-G4X-00-CV2

MCD5-0525B 134N9362 MCD5-0525B-T7-G4X-00-CV1 134N9363 MCD5-0525B-T7-G4X-00-CV2

MCD5-0632B 134N9366 MCD5-0632B-T7-G4X-00-CV1 134N9367 MCD5-0632B-T7-G4X-00-CV2

MCD5-0744B 134N9370 MCD5-0744B-T7-G4X-00-CV1 134N9371 MCD5-0744B-T7-G4X-00-CV2

MCD5-0826B 134N9374 MCD5-0826B-T7-G4X-00-CV1 134N9375 MCD5-0826B-T7-G4X-00-CV2

MCD5-0961B 134N9378 MCD5-0961B-T7-G4X-00-CV1 134N9379 MCD5-0961B-T7-G4X-00-CV2

MCD5-0360C 175G5561 MCD5-0360C-T7-G4X-00-CV1 175G5584 MCD5-0360C-T7-G4X-00-CV2

MCD5-0380C 175G5562 MCD5-0380C-T7-G4X-00-CV1 175G5585 MCD5-0380C-T7-G4X-00-CV2

MCD5-0428C 175G5563 MCD5-0428C-T7-G4X-00-CV1 175G5586 MCD5-0428C-T7-G4X-00-CV2

MCD5-0595C 175G5564 MCD5-0595C-T7-G4X-00-CV1 175G5587 MCD5-0595C-T7-G4X-00-CV2

MCD5-0619C 175G5565 MCD5-0619C-T7-G4X-00-CV1 175G5588 MCD5-0619C-T7-G4X-00-CV2

MCD5-0790C 175G5566 MCD5-0790C-T7-G4X-00-CV1 175G5589 MCD5-0790C-T7-G4X-00-CV2

MCD5-0927C 175G5567 MCD5-0927C-T7-G4X-00-CV1 175G5590 MCD5-0927C-T7-G4X-00-CV2

MCD5-1200C 175G5568 MCD5-1200C-T7-G5X-00-CV1 175G5591 MCD5-1200C-T7-G5X-00-CV2

MCD5-1410C 175G5569 MCD5-1410C-T7-G5X-00-CV1 175G5592 MCD5-1410C-T7-G5X-00-CV2

MCD5-1600C 175G5570 MCD5-1600C-T7-G5X-00-CV1 175G5593 MCD5-1600C-T7-G5X-00-CV2

number Type code

Ordering

number Type code

Table 1.3 Ordering Numbers, T7, 380–690 V AC

Safety Operating Guide

2 Safety

2.1 Safety

The following symbols are used in this guide:

WARNING

Indicates a potentially hazardous situation that could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation that could result in minor or moderate injury. It can also be used to alert against unsafe practices.

NOTICE

Indicates important information, including situations that can result in damage to equipment or property.

2.1.1 Qualied Personnel

Correct and reliable transport, storage, installation, operation, and maintenance are required for the troublefree and safe operation of the soft starter. Only qualied personnel are allowed to install or operate this equipment.

Qualied personnel is dened as trained sta, who are authorized to install, commission, and maintain equipment, systems, and circuits in accordance with pertinent laws and regulations. Additionally, the personnel must be familiar with the instructions and safety measures described in this manual.

WARNING

ELECTRICAL SHOCK HAZARD

VLT® Soft Starter MCD 500 contains dangerous voltages when connected to mains voltage. Only a qualied electrician should carry out the electrical installation. Improper installation of the motor or the soft starter can cause death, serious injury, or equipment failure. Follow the guidelines in this manual and local electrical safety codes. Models MCD5-0360C ~ MCD5-1600C: Treat the busbar and heat sink as live parts whenever the unit has mains voltage connected (including when the soft starter is tripped or waiting for a command).

WARNING

PROPER GROUNDING

Disconnect the soft starter from mains voltage before carrying out repair work. It is the responsibility of the person installing the soft starter to provide proper grounding and branch circuit protection according to local electrical safety codes. Do not connect power factor correction capacitors to the

output of the VLT® Soft Starter MCD 500. If static power factor correction is employed, it must be connected to the supply side of the soft starter.

WARNING

IMMEDIATE START

In auto-on mode, the motor can be controlled remotely (via remote inputs) while the soft starter is connected to mains. MCD5-0021B ~ MCD5-0961B: Transportation, mechanical shock, or rough handling may cause the bypass contactor to latch into the On state.

To prevent the motor from starting immediately on rst commissioning or operation after transportation:

Always ensure that the control supply is applied

•

before the power.

Applying control supply before power ensures

•

that the contactor state is initialized.

WARNING

UNINTENDED START

When the soft starter is connected to AC mains, DC supply, or load sharing, the motor can start at any time. Unintended start during programming, service, or repair work can result in death, serious injury, or property damage. The motor can start with an external switch, a eldbus command, an input reference signal from the LCP or LOP, via remote operation using MCD PC Software, or after a cleared fault condition.

To prevent unintended motor start:

Press [O]/[Reset] on the LCP before

•

programming parameters.

Disconnect the soft starter from mains.

•

Completely wire and assemble the soft starter,

•

motor, and any driven equipment before connecting the soft starter to AC mains, DC supply, or load sharing.

2 2

Safety

VLT® Soft Starter MCD 500

WARNING

SAFETY OF PERSONNEL

The soft starter is not a safety device and does not provide electrical isolation or disconnection from the supply.

If isolation is required, the soft starter must be

•

installed with a main contactor.

Do not rely on the start and stop functions for

•

safety of personnel. Faults occurring in the mains supply, the motor connection, or the electronics of the soft starter can cause unintended motor starts or stops.

If faults occur in the electronics of the soft

•

starter, a stopped motor may start. A temporary fault in the supply mains or loss of motor connection can also cause a stopped motor to start.

To provide safety of personnel and equipment, control the isolation device through an external safety system.

NOTICE

Before changing any parameter settings, save the current parameter to a le using MCD PC Software or the Save

User Set function.

NOTICE

Use the autostart feature with caution. Read all the notes related to autostart before operation.

The examples and diagrams in this manual are included solely for illustrative purposes. The information contained in this manual is subject to change at any time and without prior notice. Responsibility or liability is never accepted for direct, indirect, or consequential damage resulting from the use or application of this equipment.

177HA427.10

Installation Operating Guide

3 Installation

3.1 Mechanical Installation

3 3

1 MCD5-0021B to MCD5-0215B: Allow 100 mm (3.94 in) between the soft starters.

MCD5-0245B to MCD5-0961B: Allow 200 mm (7.88 in) between the soft starters.

MCD5-0245C: Allow 100 mm (3.94 in) between the soft starters.

MCD5-0360C to MCD5-1600C: Allow 200 mm (7.88 in) between the soft starters.

2 MCD5-0021B to MCD5-0215B: Allow 50 mm (1.97 in) between the soft starter and solid surfaces.

MCD5-0245B to MCD5-0961B: Allow 200 mm (7.88 in) between soft starters.

MCD5-0245C: Allow 100 mm (3.94 in) between the soft starter and solid surfaces.

MCD5-0360C to MCD5-1600C: Allow 200 mm (7.88 in) between the soft starter and solid surfaces.

3 It is possible to mount the soft starter on its side. Derate the soft starter rated current by 15%.

4 If mounted without communication modules, soft starters may be mounted side by side with no clearance.

Illustration 3.1 Clearances and Derating Values at Installation

177HA514.10

Installation

VLT® Soft Starter MCD 500

3.2 Dimensions and Weight

Model A [mm] (in) B [mm] (in) C [mm] (in) D [mm] (in) E [mm] (in) Weight [kg] (lbs)

MCD5-0021B

MCD5-0037B

MCD5-0043B

MCD5-0053B

MCD5-0068B

MCD5-0084B

MCD5-0089B

MCD5-0105B

MCD5-0131B

MCD5-0141B

MCD5-0195B

MCD5-0215B

MCD5-0245B

MCD5-0331B

MCD5-0396B

MCD5-0469B

MCD5-0525B

MCD5-0632B

MCD5-0744B

MCD5-0826B

MCD5-0961B

MCD5-0245C 460 (18.1) 400 (15.0) 390 (15.4) 320 (12.6) 279 (11.0) 23.9 (52.7)

MCD5-0360C

MCD5-0380C

MCD5-0428C

MCD5-0595C

MCD5-0619C

MCD5-0790C

MCD5-0927C

295 (11.6) 278 (10.9) 150 (5.9) 124 (4.9)

438 (17.2) 380 (15.0) 275 (10.8) 248 (9.8) 250 (9.8) 14.9 (32.8)

440 (17.3) 392 (15.4) 424 (16.7) 376 (14.8) 296 (11.7)

640 (25.2) 600 (23.6) 433 (17.0) 320 (12.6) 295 (11.6)

689 (27.1) 522 (20.5) 430 (16.9) 320 (12.6) 300 (11.8)

183 (7.2) 4.2 (9.3)

4.5 (9.9)

213 (8.14)

4.9 (10.8)

26 (57.2)

30.2 (66.6)

49.5 (109.1)

60.0 (132.3)

35 (77.2)

45 (99.2)

Installation Operating Guide

Model A [mm] (in) B [mm] (in) C [mm] (in) D [mm] (in) E [mm] (in) Weight [kg] (lbs)

MCD5-1200C

856 (33.7) 727 (28.6) 585 (23.0) 500 (19.7) 364 (14.3) 120 (264.6)MCD5-1410C

MCD5-1600C

Illustration 3.2 Dimensions and Weight

3 3

1 7 7 H A 5 0 4 . 1 0

S t a r t / s t o p

R e s e t

S t a r t

S t o p

R e s e t

S t a r t

S t o p

R e s e t

1 5

1 6

1 7

1 8

2 5

1 8

1 5

1 6

1 7

1 8

2 5

1 8

1 5

1 6

1 7

1 8

2 5

1 8

Electrical Installation

4 Electrical Installation

VLT® Soft Starter MCD 500

4.1 Control Wiring

4.1.1 Ways to Control the Soft Starter

Control the VLT® Soft Starter MCD 500 in 3 ways:

Pressing the keys on the LCP.

•

Via remote inputs.

•

Via a serial communication link.

•

The soft starter always responds to a local start or stop command (via the [Hand On] and [O] keys on the LCP). Pressing the [Auto On] key selects remote control (the soft starter accepts commands from the remote inputs). In remote mode, the Auto On LED is on. In hand-on mode, the Hand On LED is on if the soft starter starts or runs. The O LED is on if the soft starter is stopped or stops.

NOTICE

SELV oers protection by way of extra low voltage. Protection against electric shock is ensured when the electrical supply itself is of the SELV type and the installation follows local/national regulations on SELV supplies.

NOTICE

Galvanic (ensured) isolation is obtained by fullling requirements for higher isolation and by providing the relevant creepages/clearance distances. These requirements are described in the IEC 61140 standard. The components that make up the electrical isolation also comply with the requirements for higher isolation and the relevant test as described in IEC 61140.

4.1.3 Remote Inputs

4.1.2 Control Terminals

Control terminations use 2.5 mm2 (14 AWG) plug-in terminal blocks. Dierent models require control voltage to dierent terminals:

CV1 (24 V AC/V DC): A5, A6.

•

CV2 (110–120 V AC): A5, A6.

•

CV2 (220–240 V AC): A4, A6.

•

The soft starter has 3 xed inputs for remote control. Control these inputs by contacts rated for low voltage, low current operation (gold ash or similar).

1 2-wire control

2 3-wire control

3 4-wire control

Illustration 4.2 2-, 3-, and 4-wire Control

Illustration 4.1 Wiring to Control Terminals

The reset input can be normally open or normally closed.

NOTICE

Do not short terminals 05 and 06 without using a thermistor.

To select the conguration, use parameter 3-8 Remote Reset Logic.

WARNING

All control terminals and relay terminals comply with SELV (safety extra low voltage). This protection does not apply to grounded delta leg above 400 V.

To maintain SELV, all connections made to the control terminals must be PELV (for example thermistor must be reinforced/double insulated from motor).

ELECTRICAL SHOCK HAZARD

Do not apply voltage to the control input terminals. These terminals are active 24 V DC inputs and must be controlled with potential-free contacts.

Segregate cables to the control inputs from

•

mains voltage and motor cabling.

177HA646.10

177HA647.10

177HA648.10

177HA649.10

5 mm

15 mm

28 mm

11 mm

(M10)

177HA643.10

6 mm

15 mm

28 mm

11 mm

(M10)

177HA644.10

13 mm

12 mm

32 mm

11 mm

(M10)

177HA645.10

Electrical Installation Operating Guide

4.1.4 Serial Communication

Control via the serial communication network is always enabled in hand-on mode and can be enabled or disabled in remote control mode (see parameter 3-2 Comms in Remote). Control via the serial communication network requires an optional communication module.

4.1.5 Ground Terminal

Ground terminals are at the back of the soft starter.

MCD5-0021B to MCD5-0105B have 1 terminal on

•

the input side (top).

MCD5-0131B to MCD5-0961B and MCD5-0245C to

•

MCD5-1600C have 2 terminals; 1 on the input side (top), and 1 on the output side (bottom).

Cable size: 6–50 mm2 (AWG 10-1/0)

Torque: 4 Nm (35.4 in-lb)

MCD5-0021B to MCD5-0105B

38 Nm (336.3 in-lb)

4.1.6 Power Terminations

NOTICE

For personnel safety, snap-o tabs protect the power terminals on models up to MCD5-0105B. When using large cables, it may be necessary to break o these tabs.

NOTICE

Some units use aluminum busbars. When connecting power terminations, clean the surface contact area thoroughly (using an emery or stainless steel brush), and use an appropriate jointing compound to prevent corrosion.

Use only copper stranded or solid conductors, rated for 75 °C (167°F) or higher.

14 mm (0.55 in)

Torx T20 x 150

Flat 7 mm x 150

4 4

MCD5-0131B MCD5-0141B to MCD5-0215B MCD5-0245B

38 Nm (336.3 in-lb) 38 Nm (336 in-lb)

MCD5-0331B to MCD5-0396B MCD5-0469B to MCD5-0961B MCD5-0245C

MCD5-0360C to MCD5-0927C MCD5-1200C to MCD5-1600C

Table 4.1 Measurements and Torques for Power Terminations

1/L1, 3/L2, 5/L3

2/T1, 4/T2, 6/T3

177HA686.10

1/L1 3/L2 5/L3

2/T1 4/T2 6/T3

177HA687.10

2/T1 4/T2 6/T3

1/L1 3/L2 5/L3

177HA688.10

Electrical Installation

VLT® Soft Starter MCD 500

4.1.7 Finger Guard Kit

NOTICE

When installing IP00 soft starters (MCB5-131B and above), nger guards are specied for personnel safety. Finger guards t over the soft starter terminals to prevent accidental contact with live terminals. Finger guards provide IP20 protection when correctly installed.

MCD5-0131B to MCD5-0215B: 175G5662.

•

MCD5-0245B to MCD5-0396B: 175G5730.

•

MCD5-0469B to MCD5-0961B: 175G5731.

•

MCD5-245C: 175G5663.

•

MCD5-0360C to MCD5-0927C: 175G5664.

•

MCD5-1200C to MCD5-1600C: 175G5665.

•

Illustration 4.3 MCD5-0021B to MCD5-0105B, 21–105 A

NOTICE

To be UL-compliant, the models MCD5-0131B to MCD5-0396B require nger guards.

4.2 Power Input and Output Congurations

4.2.1 Internally Bypassed Models (MCD5-0021B to MCD5-0961B)

Models MCD5-0021B to MCD5-0215B have power inputs at the top of the unit and outputs at the bottom of the unit.

Internally bypassed models MCD5-0245B to MCD5-0396B have output busbars at the bottom of the unit and input busbars at both the top and bottom. The AC supply can be connected:

Top-in/bottom-out.

•

Bottom-in/bottom-out

•

Internally bypassed models MCD5-0469B to MCD5-0961B have input and output busbars at the top and bottom of the unit. The AC supply can be connected:

Top-in/bottom-out.

•

Top-in/top-out.

•

Bottom-in/bottom-out.

•

Bottom-in/top-out.

•

Illustration 4.4 MCD5-0131B to MCD5-0215B, 131–215 A

Illustration 4.5 MCD5-0245B to MCD5-0396B, 245–396 A

20.0

2/T1 4/T2 6/T3

1/L1 3/L2 5/L3

2/T1 4/T2 6/T3

1/L1 3/L2 5/L3

177HA650.11

177HA651.10

1/L1 3/L2 5/L3

T1B T2B T3B

2/T1 4/T2 6/T3

(L1B L2B L3B)

1/L1 3/L2 5/L3

2/T1 4/T2 6/T3

1/L1 3/L2 5/L3

(L1B L2B L3B)

2/T1 4/T2 6/T3

(L1B L2B L3B)

1/L1 3/L2 5/L3

2/T1 4/T2 6/T3

1/L1 3/L2 5/L3

(L1B L2B L3B)

2/T1 4/T2 6/T3

177HA652.10

Electrical Installation Operating Guide

Illustration 4.6 MCD5-0469B to MCD5-0961B, 469–961 A

4.2.3 MCD5-0360C to MCD5-1600C

MCD5-0360C to MCD5-1600C have dedicated bypass terminals on the input busbars. The bypass terminals are:

L1B.

•

L2B.

•

L3B.

•

The busbars on non-bypassed models MCD5-0360C to MCD5-1600C can be adjusted for top or bottom input and output as required. See chapter 12 Busbar Adjustment Procedure (MCD5-0360C to MCD5-1600C) for step-by-step instructions. The soft starters are manufactured top-in/ bottom-out.

NOTICE

For models MCD5-0360C to MCD5-1600C to be ULcompliant, mount them top-in/bottom-out, or top-out/ bottom-in. See chapter 11.1 UL-compliant Installation for more information.

4 4

4.2.2 MCD5-0245C

MCD5-0245C has dedicated bypass terminals at the bottom of the unit. The bypass terminals are:

T1B.

•

T2B.

•

T3B.

•

Illustration 4.7 Bypass Terminals on MCD5-0245C, 245 A

Illustration 4.8 Location of Bypass Terminals, MCD5-0360C to

MCD5-1600C, 360–1600 A

4.3 Motor Connection

VLT® Soft Starters MCD 500 can be connected to the motor in-line or inside delta (also called 3-wire and 6-wire connection). When connecting in inside delta, enter the motor full load current (FLC) in parameter 1-1 Motor Full Load Current. The MCD 500 automatically calculates inside delta current based on this data. Parameter 15-7 Motor Connection is set to Auto Detect as default and can be set to force the soft starter in inside delta or in-line.

177HA430.12

6/T3

2/T1

5/L3

3/L2

1/L1

4/T2

K1 F1

177HA429.12

6/T3

2/T1

5/L3

3/L2

1/L1

4/T2

K1 F1

Electrical Installation

VLT® Soft Starter MCD 500

4.3.1 Testing the Installation

4.3.2.2 Non-bypassed

The VLT® Soft Starter MCD 500 can be connected to a small motor for testing. During this test, the control input and relay output protection settings can be tested. This test mode is not suitable for testing soft starting or soft stopping performance.

The minimum FLC of the test motor is 2% of the minimum FLC of the soft starter (see chapter 4.5 Minimum and Maximum Current Settings).

NOTICE

When testing the soft starter with a small motor, set parameter 1-1 Motor FLC to the minimum allowable value. Models which are internally bypassed do not require an external bypass contactor.

4.3.2 In-line Installation

4.3.2.1 Internally Bypassed

K1 Main contactor (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.10 In-line Installation, Non-bypassed

Semiconductor fuses (optional)

K1 Main contactor (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.9 In-line Installation, Internally Bypassed

Semiconductor fuses (optional)

4.3.2.3 Externally Bypassed

Non-bypassed models have dedicated bypass terminals, which allow the soft starter to continue providing protection and monitoring functions even when bypassed via an external contactor. Connect the bypass contactor to the bypass terminals and control it by a programmable output congured to Run (see parameters 4-1 to 4-9).

NOTICE

The bypass terminals on MCD5-0245C are:

T1B.

•

T2B.

•

T3B.

•

The bypass terminals on MCD5-0360C to MCD5-1600C are:

L1B.

•

L2B.

•

L3B.

•

If necessary, the fuses can be installed on the input side.

177HA617.11

6/T3

2/T1

5/L3

3/L2

1/L1

4/T2

T1B

T2B

T3B

177HA431.12

6/T3

2/T1

5/L3

3/L2

1/L1

4/T2

L1B

L2B

L3B

6/T

2/T

4/T

U1(1) U2(4)

V1(2)

V2(5)

W1(3) W2(6)

5/L3

3/L2

1/L1

K1 F1

177HA501.11

Electrical Installation Operating Guide

4.3.3 Inside Delta Installation

NOTICE

When connecting the VLT® Soft Starter MCD 500 in inside delta conguration, always install a main contactor or shunt trip circuit breaker.

NOTICE

When connecting in inside delta, enter the motor full load current (FLC) in parameter 1-1 Motor FLC. The MCD 500 automatically calculates inside delta currents based on this data. Parameter 15-7 Motor Connection is set to Auto detect as default and can be set to force the soft starter in inside delta or in-line.

4 4

K1 Main contactor

K2 Bypass contactor (external)

Semiconductor fuses (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.11 In-line Installation, Externally Bypassed,

MCD5-0245C

4.3.3.1 Internally Bypassed

K1 Main contactor

Semiconductor fuses (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.13 Inside Delta Installation, Internally Bypassed

K1 Main contactor

K2 Bypass contactor (external)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Semiconductor fuses (optional)

Illustration 4.12 In-line Installation, Externally Bypassed,

MCD5-0360C to MCD5-1600C

177HA500.12

6/T

2/T

5/L

3/L

1/L

4/T

K1 F

U1(1 U2(4

V1(2

V2(5

W1( W2(

177HA618.11

6/T

2/T

5/L3

3/L2

1/L1

4/T

U1(1) U2(4)

V1(2)

V2(5)

W1(3) W2(6)

T2B

T1B

T3B

177HA502.12

6/T

2/T

5/L3

3/L2

1/L1

4/T

K1 F1

U1(1) U2(4)

V1(2)

V2(5)

W1(3) W2(6)

L2B

L1B

L3B

Electrical Installation

VLT® Soft Starter MCD 500

4.3.3.2 Non-bypassed

K1 Main contactor

Semiconductor fuses (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.14 Inside Delta Installation, Non-bypassed

K1 Main contactor

K2 Bypass contactor (external)

Semiconductor fuses (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

4.3.3.3 Externally Bypassed

Non-bypassed models have dedicated bypass terminals, which allow the soft starter to continue providing protection and monitoring functions even when bypassed via an external bypass contactor. Connect the bypass contactor to the bypass terminals and control the contactor by a programmable output congured to Run (see parameters 4-1 to 4-9).

NOTICE

The bypass terminals on MCD5-0245C are:

T1B.

•

T2B.

•

T3B.

•

The bypass terminals on MCD5-0360C to MCD5-1600C are:

L1B.

•

L2B.

•

L3B.

•

If necessary, the fuses can be installed on the input side.

Illustration 4.15 Inside Delta Installation, Externally Bypassed,

MCD5-0245C

K1 Main contactor

K2 Bypass contactor (external)

Semiconductor fuses (optional)

1) To keep the warranty on the SCRs, use semiconductor fuses.

Illustration 4.16 Inside Delta Installation, Externally Bypassed,

MCD5-0360C to MCD5-1600C

Electrical Installation Operating Guide

4.4 Current Ratings

Contact the local supplier for ratings under operating conditions not covered by these ratings charts.

All ratings are calculated at an altitude of 1000 m (3281 ft) and ambient temperature of 40 °C (104 °F).

4 4

Electrical Installation

VLT® Soft Starter MCD 500

4.4.1 In-line Connection (Bypassed)

NOTICE

Models MCD5-0021B to MCD5-0961B are internally bypassed. Models MCD5-0245C to MCD5-1600C require an external bypass contactor.

Type code Ampere rating [A]

AC-53b 3-30:330 AC-53b 4-20:340 AC-53b 4.5-30:330

MCD5-0021B 21 17 15

MCD5-0037B 37 31 26

MCD5-0043B 43 37 30

MCD5-0053B 53 46 37

AC-53b 3-30:570 AC-53b 4-20:580 AC-53b 4.5-30:570

MCD5-0068B 68 55 47

MCD5-0084B 84 69 58

MCD5-0089B 89 74 61

MCD5-0105B 105 95 78

MCD5-0131B 131 106 90

MCD5-0141B 141 121 97

MCD5-0195B 195 160 134

MCD5-0215B 215 178 148

MCD5-0245B 245 194 169

MCD5-0245C 255 201 176

MCD5-0331B 331 266 229

MCD5-0360C 360 310 263

MCD5-0380C 380 359 299

MCD5-0396B 396 318 273

MCD5-0428C 430 368 309

MCD5-0469B 496 383 326

MCD5-0525B 525 425 364

MCD5-0595C 620 540 434

MCD5-0619C 650 561 455

MCD5-0632B 632 512 438

MCD5-0790C 790 714 579

MCD5-0744B 744 606 516

MCD5-0826B 826 684 571

MCD5-0927C 930 829 661

MCD5-0961B 961 796 664

MCD5-1200C 1200 1200 1071

MCD5-1410C 1410 1319 1114

MCD5-1600C 1600 1600 1353

Table 4.2 Internally Bypassed Models

(

)

Electrical Installation Operating Guide

Illustration 4.17 AC-53 Rating for Bypassed Operation

All ratings are calculated at an altitude of 1000 m (3281 ft) and ambient temperature of 40 °C (104 °F).

4.4.2 In-line Connection (Non-bypassed/Continuous)

Type code Ampere ratings [A]

AC-53a 3-30:50-6 AC-53a 4-20:50-6 AC-53a 4.5-30:50-6

MCD5-0245C 245 195 171

MCD5-0360C 360 303 259

MCD5-0380C 380 348 292

MCD5-0428C 428 355 300

MCD5-0595C 595 515 419

MCD5-0619C 619 532 437

MCD5-0790C 790 694 567

MCD5-0927C 927 800 644

MCD5-1200C 1200 1135 983

MCD5-1410C 1410 1187 1023

MCD5-1600C 1600 1433 1227

Table 4.3 Non-bypassed Models

4 4

Illustration 4.18 AC-53 Rating for Continuous Operation

All ratings are calculated at an altitude of 1000 m (3281 ft) and ambient temperature of 40 °C (104 °F).

Contact a local supplier for ratings under operating conditions not covered by these ratings charts.

Electrical Installation

VLT® Soft Starter MCD 500

4.4.3 Inside Delta Connection (Bypassed)

NOTICE

Models MCD5-0021B to MCD5-0961B are internally bypassed. Models MCD5-0245C to MCD5-1600C require an external bypass contactor.

Type code Ampere ratings [A]

AC-53b 3-30:330 AC-53b 4.20-:340 AC-53b 4.5-30:330

MCD5-0021B 32 26 22

MCD5-0037B 56 47 39

MCD5-0043B 65 56 45

MCD5-0053B 80 69 55

AC-53b 3-30:570 AC-53b 4-20:580 AC-53b 4.5-30:570

MCD5-0068B 102 83 71

MCD5-0084B 126 104 87

MCD5-0089B 134 112 92

MCD5-0105B 158 143 117

MCD5-0131B 197 159 136

MCD5-0141B 212 181 146

MCD5-0195B 293 241 201

MCD5-0215B 323 268 223

MCD5-0245B 368 291 254

MCD5-0245C 383 302 264

MCD5-0331B 497 400 343

MCD5-0360C 540 465 395

MCD5-0380C 570 539 449

MCD5-0396B 594 478 410

MCD5-0428C 645 552 463

MCD5-0469B 704 575 490

MCD5-0525B 787 637 546

MCD5-0595C 930 810 651

MCD5-0619C 975 842 683

MCD5-0632B 948 768 658

MCD5-0790C 1185 1072 869

MCD5-0744B 1116 910 774

MCD5-0826B 1239 1026 857

MCD5-0927C 1395 1244 992

MCD5-0961B 1441 1194 997

MCD5-1200C 1800 1800 1607

MCD5-1410C 2115 1979 1671

MCD5-1600C 2400 2400 2030

Table 4.4 Bypassed Models

(

)

Electrical Installation Operating Guide

Illustration 4.19 AC-53 Rating for Bypassed Operation

All ratings are calculated at an altitude of 1000 m (3281 ft) and ambient temperature of 40 °C (104 °F).

4.4.4 Inside Delta Connection (Non-bypassed/Continuous)

Type code Ampere ratings [A]

AC-53a 3-30:50-6 AC-53a 4-20:50-6 AC-53a 4.5-30:50-6

MCD5-0245C 368 293 257

MCD5-0360C 540 455 389

MCD5-0380C 570 522 438

MCD5-0428C 643 533 451

MCD5-0595C 893 773 629

MCD5-0619C 929 798 656

MCD5-0790C 1185 1042 851

MCD5-0927C 1391 1200 966

MCD5-1200C 1800 1702 1474

MCD5-1410C 2115 1780 1535

MCD5-1600C 2400 2149 1841

Table 4.5 Non-bypassed Models

4 4

Illustration 4.20 AC-53 Rating for Continuous Operation

All ratings are calculated at an altitude of 1000 m (3281 ft) and ambient temperature of 40 °C (104 °F).

Contact a local supplier for ratings under operating conditions not covered by these ratings charts.

Electrical Installation

VLT® Soft Starter MCD 500

4.5 Minimum and Maximum Current Settings

The minimum and maximum full load current settings depend on the model:

In-line connection Inside delta connection

Model Minimum [A] Maximum [A] Minimum [A] Maximum [A]

MCD5-0021B 5 23 7 34

MCD5-0037B 9 43 13 64

MCD5-0043B 10 50 15 75

MCD5-0053B 11 53 16 79

MCD5-0068B 15 76 23 114

MCD5-0084B 19 97 29 145

MCD5-0089B 20 100 30 150

MCD5-0105B 21 105 32 157

MCD5-0131B 29 145 44 217

MCD5-0141B 34 170 51 255

MCD5-0195B 40 200 60 300

MCD5-0215B 44 220 66 330

MCD5-0331B 70 350 70 525

MCD5-0396B 85 425 85 638

MCD5-0469B 100 500 100 750

MCD5-0525B 116 580 116 870

MCD5-0632B 140 700 140 1050

MCD5-0744B 164 820 164 1230

MCD5-0825B 184 920 184 1380

MCD5-0961B 200 1000 200 1500

MCD5-0245C 51 255 77 382

MCD5-0360C 72 360 108 540

MCD5-0380C 76 380 114 570

MCD5-0428C 86 430 129 645

MCD5-0595C 124 620 186 930

MCD5-0619C 130 650 195 975

MCD5-0790C 158 790 237 1185

MCD5-0927C 186 930 279 1395

MCD5-1200C 240 1200 360 1800

MCD5-1410C 282 1410 423 2115

MCD5-1600C 320 1600 480 2400

Table 4.6 Minimum and Maximum Full Load Current

Bypass Contactor

4.6

Some VLT® Soft Starters MCD 500 are internally bypassed and do not require an external bypass contactor.

4.7 Main Contactor

Install a main contactor if the VLT® Soft Starter MCD 500 is connected to the motor in inside delta format and is optional for in-line connection. Select a contactor with an

Non-bypassed soft starters may be installed with an external bypass contactor. Select a contactor with an AC1 rating greater than or equal to the full load current rating of the connected motor.

AC3 rating greater than or equal to the full load current rating of the connected motor.

4.8 Circuit Breaker

A shunt trip circuit breaker may be used instead of a main contactor to isolate the motor circuit if a soft starter trips. The shunt trip mechanism must be powered from the supply side of the circuit breaker or from a separate control supply.

Electrical Installation Operating Guide

4.9 Power Factor Correction

CAUTION

EQUIPMENT DAMAGE

Connecting power factor correction capacitors to the output side damages the soft starter.

Connect power factor correction capacitors to

•

the input side of the soft starter.

If power factor correction is used, use a dedicated contactor to switch in the capacitors.

4.10 Fuses

4.10.1 Power Supply Fuses

NOTICE

WARRANTY

To keep the warranty on the SCRs, all fuses should be semiconductor fuses.

NOTICE

Use semiconductor fuses for Type 2 coordination (according to the IEC 60947-4-2 standard) to prevent

damaging the SCRs. VLT® Soft Starter MCD 500 has integrated SCR protection against overload transient currents, but if there is a short circuit (for example due to a defective motor winding) this protection is not

sucient.

For applications using adaptive control to soft stop the motor with stop times greater than 30 s, select motor branch protection as follows:

Standard HRC mains fuses: Minimum 150% motor

•

full load current.

Motor rated mains fuses: Minimum rating

•

100/150% motor full load current.

Motor control circuit breaker minimum long time

•

setting: 150% motor full load current.

Motor control circuit breaker minimum short time

•

setting: 400% motor full load current for 30 s.

Fuse recommendations are calculated for 40 °C (104 °F), and at an altitude of up to 1000 m (3281 ft).

NOTICE

Fuse selection is based on a 400% FLC start for 20 s with:

Standard published starts per hour.

•

Duty cycle.

•

40 °C (104 °F) ambient temperature.

•

Up to 1000 m (3281 ft) altitude.

•

For installations operating outside these conditions, consult a local Danfoss supplier. Table 4.7 to Table 4.13 contain recommendations only. To conrm the selection for a particular application, always consult a local supplier.

4 4

HRC fuses (such as Ferraz AJT fuses) can be used for Type 1 coordination according to the IEC 60947-4-2 standard.

NOTICE

Adaptive control regulates the speed prole of the motor within the programmed time limit. This control may result in a higher level of current than traditional control methods.

Electrical Installation

4.10.2 Bussmann Fuses

VLT® Soft Starter MCD 500

Model

MCD5-0021B 1150 170M1314 170M1314 170M1314

MCD5-0037B 8000 170M1316 170M1316 170M1316

MCD5-0043B 10500 170M1318 170M1318 170M1318

MCD5-0053B 15000 170M1318 170M1318 170M1318

MCD5-0068B 15000 170M1319 170M1319 170M1318

MCD5-0084B 512000 170M1321 170M1321 170M1319

MCD5-0089B 80000 170M1321 170M1321 170M1321

MCD5-0105B 125000 170M1321 170M1321 170M1321

MCD5-0131B 125000 170M1321 170M1321 170M1321

MCD5-0141B 320000 170M2621 170M2621 170M2621

MCD5-0195B 320000 170M2621 170M2621 170M2621

MCD5-0215B 320000 170M2621 170M2621 170M2621

MCD5-0245B 320000 170M2621 170M2621 170M2621

MCD5-0331B 202000 170M5011 170M5011 –

MCD5-0396B 320000 170M6011 – –

MCD5-0469B 320000

MCD5-0525B 781000 170M6013 170M6013 170M6013

MCD5-0632B 781000 170M5015 170M5015 –

MCD5-0744B 1200000 170M5017 170M6017 –

MCD5-0826B 2530000 170M6017 170M6017 –

MCD5-0961B 2530000 170M6018

MCD5-0245C 320000 170M2621 170M2621 170M2621

MCD5-0360C 320000 170M6010 170M6010 170M6010

MCD5-0380C 320000 170M6011 170M6011 –

MCD5-0428C 320000 170M6011 170M6011 –

MCD5-0595C 1200000 170M6015 170M6015 170M6014

MCD5-0619C 1200000 170M6015 170M6015 170M6014

MCD5-0790C 2530000 170M6017 170M6017 170M6016

MCD5-0927C 4500000 170M6019 170M6019 170M6019

MCD5-1200C 4500000 170M6021 – –

MCD5-1410C 6480000 – – –

MCD5-1600C 12500000

SCR I2t (A2s)

Supply voltage

(≤440 V AC)

170M6008

170M6019

Supply voltage

(≤575 V AC)

– –

170M6013

– –

Supply voltage

(≤690 V AC)

–

Table 4.7 Square Body (170M)

1) Two fuses connected in parallel are required per phase.

Electrical Installation Operating Guide

Model

SCR I2t (A2s)

Supply voltage

(<440 V AC)

Supply voltage

(<575 V AC)

Supply voltage

(<690 V AC)

MCD5-0021B 1150 63FE 63FE 63FE

MCD5-0037B 8000 120FEE 120FEE 120FEE

MCD5-0043B 10500 120FEE 120FEE 120FEE

MCD5-0053B 15000 200FEE 200FEE 200FEE

MCD5-0068B 15000 200FEE 200FEE 200FEE

MCD5-0084B 512000 200FEE 200FEE 200FEE

MCD5-0089B 80000 280FM 280FM 280FM

MCD5-0105B 125000 280FM 280FM 280FM

MCD5-0131B 125000 280FM 280FM 280FM

MCD5-0141B 320000 450FMM 450FMM 450FMM

MCD5-0195B 320000 450FMM 450FMM 450FMM

MCD5-0215B 320000 450FMM 450FMM 450FMM

MCD5-0245B 320000 450FMM 450FMM 450FMM

MCD5-0331B 202000

MCD5-0396B 320000

MCD5-0469B 320000

MCD5-0525B 781000

MCD5-0632B 781000

315FM

400FMM

450FMM

500FMM

630FMM

– –

500FMM

– –

500FMM

MCD5-0744B 1200000 – – –

MCD5-0826B 2530000 – – –

MCD5-0961B 2530000 – – –

MCD5-0245C 320000 450FMM 450FMM 450FMM

MCD5-0360C 320000 – – –

MCD5-0380C 320000

400FMM

MCD5-0428C 320000 – – –

MCD5-0595C 1200000

MCD5-0619C 1200000

630FMM

–

MCD5-0790C 2530000 – – –

MCD5-0927C 4500000 – – –

MCD5-1200C 4500000 – – –

MCD5-1410C 6480000 – – –

MCD5-1600C 12500000 – – –

4 4

Table 4.8 British Style (BS88)

1) Two fuses connected in parallel are required per phase.

Electrical Installation

4.10.3 Ferraz Fuses

VLT® Soft Starter MCD 500

Model

SCR I2t (A2s)

MCD5-0021B 1150

MCD5-0037B 8000

MCD5-0043B 10500

MCD5-0053B 15000

MCD5-0068B 15000

MCD5-0084B 51200 HSJ175

Supply voltage

(<440 V AC)

HSJ40

HSJ80

HSJ90

HSJ110

HSJ125

Supply voltage

(<575 V AC)

HSJ40

HSJ80

HSJ90

HSJ110

HSJ125

HSJ175

Supply voltage

(<690 V AC)

MCD5-0089B 80000 HSJ175 HSJ175

MCD5-0105B 125000 HSJ225 HSJ225

MCD5-0131B 125000 HSJ250

HSJ250

MCD5-0141B 320000 HSJ300 HSJ300

MCD5-0195B 320000 HSJ350 HSJ350

MCD5-0215B 320000

MCD5-0245B 320000

MCD5-0331B 202000

HSJ400

HSJ450

HSJ500

HSJ400

HSJ450

MCD5-0396B 320000

MCD5-0469B 320000

MCD5-0525B 781000

MCD5-0632B 781000

Not applicable

MCD5-0744B 1200000

MCD5-0826B 2530000

MCD5-0961B 2530000

MCD5-0245C 320000

HSJ450

MCD5-0360C 320000

MCD5-0380C 320000

MCD5-0428C 320000

MCD5-0595C 1200000

MCD5-0619C 1200000

MCD5-0790C 2530000

Not applicable Not applicable

MCD5-0927C 4500000

MCD5-1200C 4500000

MCD5-1410C 6480000

MCD5-1600C 12500000

Table 4.9 HSJ

1) Two series connected fuses required per phase.

Electrical Installation Operating Guide

Model

MCD5-0021B 1150 A070URD30XXX0063 A070URD30XXX0063 –

MCD5-0037B 8000 A070URD30XXX0125 A070URD30XXX0125 A070URD30XXX0125

MCD5-0043B 10500 A070URD30XXX0125 A070URD30XXX0125 A070URD30XXX0125

MCD5-0053B 15000 A070URD30XXX0125 A070URD30XXX0125 A070URD30XXX0125

MCD5-0068B 15000 A070URD30XXX0160 A070URD30XXX0160 A070URD30XXX0160

MCD5-0084B 51200 A070URD30XXX0200 A070URD30XXX0200 A070URD30XXX0200

MCD5-0089B 80000 A070URD30XXX0200 A070URD30XXX0200 A070URD30XXX0200

MCD5-0105B 125000 A070URD30XXX0315 A070URD30XXX0315 A070URD30XXX0315

MCD5-0131B 125000 A070URD30XXX0315 A070URD30XXX0315 A070URD30XXX0315

MCD5-0141B 320000 A070URD30XXX0315 A070URD30XXX0315 A070URD30XXX0315

MCD5-0195B 320000 A070URD30XXX0450 A070URD30XXX0450 A070URD30XXX0450

MCD5-0215B 320000 A070URD30XXX0450 A070URD30XXX0450 A070URD30XXX0450

MCD5-0245B 32000 A070URD30XXX0450 A070URD30XXX0450 A070URD30XXX0450

MCD5-0331B 202000 A070URD31XXX0550 – –

MCD5-0396B 238000 A070URD32XXX0630 – –

MCD5-0469B 320000 A070URD32XXX0700 – –

MCD5-0525B 781000 A070URD32XXX0800 – –

MCD5-0632B 781000 A070URD33XXX0900 – –

MCD5-0744B 1200000 A070URD33XXX1100 – –

MCD5-0826B 2530000 A070URD33XXX1250 – –

MCD5-0961B 2530000 A070URD33XXX1400 – –

MCD5-0245C 320000 A070URD30XXX0450 A070URD30XXX0450 A070URD30XXX0450

MCD5-0360C 320000 A070URD33XXX0630 A070URD33XXX0630 A070URD33XXX0630

MCD5-0380C 320000 A070URD33XXX0700 A070URD33XXX0700 –

MCD5-0428C 320000 A070URD33XXX0700 A070URD33XXX0700 –

MCD5-0595C 1200000 A070URD33XXX1000 A070URD33XXX1000 A070URD33XXX1000

MCD5-0619C 1200000 A070URD33XXX1000 A070URD33XXX1000 A070URD33XXX1000

MCD5-0790C 2530000 A070URD33XXX1400 A070URD33XXX1400 A070URD33XXX1400

MCD5-0927C 4500000 A070URD33XXX1400 A070URD33XXX1400 A070URD33XXX1400

MCD5-1200C 4500000 A055URD33XXX2250 – –

MCD5-1410C 6480000 A055URD33XXX2250 – –

MCD5-1600C 12500000 - – –

SCR I2t (A2s)

Supply voltage

(<440 V AC)

Supply voltage

(<575 V AC)

Supply voltage

(<690 V AC)

4 4

Table 4.10 North American Style (PSC 690)

Model

MCD5-0021B 1150 6.9URD30D11A0050 6.9URD30D11A0050 6.9URD30D11A0050

MCD5-0037B 8000 6.9URD30D11A0125 6.9URD30D11A0125 6.9URD30D11A0125

MCD5-0043B 10500 6.9URD30D11A0125 6.9URD30D11A0125 6.9URD30D11A0125

MCD5-0053B 15000 6.9URD30D11A0125 6.9URD30D11A0125 6.9URD30D11A0125

MCD5-0068B 15000 6.9URD30D11A0160 6.9URD30D11A0160 6.9URD30D11A0160

MCD5-0084B 51200 6.9URD30D11A0200 6.9URD30D11A0200 6.9URD30D11A0200

MCD5-0089B 80000 6.9URD30D11A0200 6.9URD30D11A0200 6.9URD30D11A0200

MCD5-0105B 125000 6.9URD30D11A0315 6.9URD30D11A0315 6.9URD30D11A0315

MCD5-0131B 125000 6.9URD30D11A0315 6.9URD30D11A0315 6.9URD30D11A0315

MCD5-0141B 320000 6.9URD30D11A0315 6.9URD30D11A0315 6.9URD30D11A0315

MCD5-0195B 320000 6.9URD31D11A0450 6.9URD31D11A0450 6.9URD31D11A0450

MCD5-0215B 320000 6.9URD31D11A0450 6.9URD31D11A0450 6.9URD31D11A0450

MCD5-0245B 320000 6.9URD31D11A0450 6.9URD31D11A0450 6.9URD31D11A0450

MCD5-0331B 202000 6.9URD31D11A0550 – –

MCD5-0396B 320000 6.9URD32D11A0630 – –

SCR I2t (A2s)

Supply voltage

(<440 V AC)

Supply voltage

(<575 V AC)

Supply voltage

(<690 V AC)

Electrical Installation

VLT® Soft Starter MCD 500

Model

MCD5-0469B 320000 6.9URD32D11A0700 – –

MCD5-0525B 781000 6.9URD32D11A0800 – –

MCD5-0632B 781000 6.9URD33D11A0900 – –

MCD5-0744B 1200000 6.9URD33D11A1100 – –

MCD5-0826B 2530000 6.9URD33D11A1250 – –

MCD5-0961B 2530000 6.9URD33D11A1400 – –

MCD5-0245C 320000 6.9URD31D11A0450 6.9URD31D11A0450 6.9URD31D11A0450

MCD5-0360C 320000 6.9URD33D11A0630 6.9URD33D11A0630 6.9URD33D11A0630

MCD5-0380C 320000 6.9URD33D11A0700 6.9URD33D11A0700 6.9URD33D11A0700

MCD5-0428C 320000 6.9URD33D11A0700 6.9URD33D11A0700 6.9URD33D11A0700

MCD5-0595C 1200000 6.9URD33D11A1000 6.9URD33D11A1000 6.9URD33D11A1000

MCD5-0619C 1200000 6.9URD33D11A1000 6.9URD33D11A1000 6.9URD33D11A1000

MCD5-0790C 2530000 6.6URD33D11A1400 6.6URD33D11A1400 –

MCD5-0927C 4500000 6.6URD33D11A1400 6.6URD33D11A1400 –

MCD5-1200C 4500000 6URD233PLAF2200 6URD233PLAF2200 –

MCD5-1410C 6480000 6URD233PLAF2200 6URD233PLAF2200 –

MCD5-1600C 12500000 6URD233PLAF2800 6URD233PLAF2800 –

Table 4.11 European Style (PSC 690)

SCR I2t (A2s)

Supply voltage

(<440 V AC)

Supply voltage

(<575 V AC)

Supply voltage

(<690 V AC)

4.10.4 UL Fuse Selection and Short Circuit Ratings

Two short-circuit current ratings (SCCR) are available for UL-compliant applications.

Standard fault currents (@600 V AC circuits)

The standard fault currents are determined referring to UL 508, section 1, table 51.2. This standard species the short-circuit current that the soft starter must withstand based on the horse power rating (or full load current (FLC) rating, or locked rotor amps (LRA) depending on the model).

If using the standard fault current ratings, the fuse must be in accordance with the information in Table 4.12 (model- and

manufacturer-specic).

High available fault currents (@480 V AC circuits)

It is possible to specify short-circuit current ratings exceeding the minimum ratings set by the standard fault currents when the soft starter is able to withstand the high available short-circuit current in accordance with the UL 508 test.

If using the high available fault current ratings, select a suitable fuse based on amperage and fuse class (J or L as applicable).

Electrical Installation Operating Guide

Model Nominal

rating [A]

maximum [kA]

MCD5-0021B 23 65 25 (J) 10 AJT25 A070URD30XXX

MCD5-0037B 43 65 50 (J) 10 AJT50 A070URD30XXX

MCD5-0043B 50 65 50 (J) 10 AJT50 A070URD30XXX

MCD5-0053B 53 65 60 (J) 10 AJT60 A070URD30XXX

MCD5-0068B 76 65 80 (J) 10 AJT80 A070URD30XXX

MCD5-0084B 97 65 100 (J) 10 AJT100 A070URD30XXX

MCD5-0089B 100 65 100 (J) 10 AJT100 A070URD30XXX

MCD5-0105B 105 65 125 (J) 10 AJT125 A070URD30XXX

MCD5-0131B 145 65 150 (J) 18 AJT150/RK5 200 A070URD30XXX

MCD5-0141B 170 65 175 (J) 18 AJT175/RK5 200 A070URD30XXX

MCD5-0195B 200 65 200 (J) 18 AJT200/RK5 300 A070URD30XXX

MCD5-0215B 220 65 250 (J) 18 AJT250/RK5 300 A070URD30XXX

MCD5-0245B 255 65 350 (RK1/J) 18

MCD5-0331B 350 65 400 (J) 18

MCD5-0396B 425 65 450 (J) 30

MCD5-0469B 500 65 600 (J) 30 600, Class J A070URD33XXX

MCD5-0525B 580 65 800 (L) 30 800, Class L –

MCD5-0632B 700 65 800 (L) 42 800, Class L –

MCD5-0744B 820 65 1200 (L) 42 1200, Class L A070URD33XXX

MCD5-0826B 920 65 1200 (L) 85 1200, Class L A070URD33XXX

MCD5-0961B 1000 65 1200 (L) 85 1200, Class L A070URD33XXX

High available Standard fault current

@480 V AC

Maximum fuse

rating [A]

(fuse class)

Short-circuit ratings 600 V short-

@600 V AC [kA] Ferraz/Mersen

fuse, listed J, L,

or RK5 class

fuse

Ferraz/Mersen

fuse, R/C

semiconductor

fuses

0063

0125

0200

0315

0450

–

A070URD33XXX

0630

0700

1000

1400

circuit current

rating [kA]

3 cycles

N/A

3 cycles

4 4

Table 4.12 Short-circuit Ratings, Bypassed Models

XXX = blade type: See Ferraz/Mersen catalog for details.

1) When protected by any UL listed fuses or UL listed circuit breakers sized according to the NEC, models provided with a 3-cycle rating are

suitable for use in a circuit with the prospective current noted.

Electrical Installation

VLT® Soft Starter MCD 500

Model Nominal

rating [A]

maximum [kA]

MCD5-0245C 255 65 350 (RK1/J) 18 AJT300 A070URD30XXX

MCD5-0360C 360 65 400 (J) 18 AJT400/RK5 500 A070URD33XXX

High available Standard fault current

@480 V AC

Maximum fuse

rating [A]

(fuse class)

MCD5-0380C 380 65 450 (J) 18 AJT450/RK5 500 A070URD33XXX

MCD5-0428C 430 65 450 (J) 30 AJT450 A070URD33XXX

MCD5-0595C 620 65 800 (L) 42 A4BQ800 A070URD33XXX

MCD5-0619C 650 65 800 (L) 42 A4BQ800 A070URD33XXX

MCD5-0790C 790 65 1200 (L) 42 A4BQ1200 070URD33XXX1

MCD5-0927C 930 65 1200 (L) 42 A4BQ1200 A070URD33XXX

MCD5-1200C 1200 65 1600 (L) 85 A4BQ1600 A065URD33XXX

MCD5-1410C 1410 65 2000 (L) 85 A4BQ2000 A055URD33XXX

MCD5-1600C 1600 65 2000 (L) 85 A4BQ2500 A055URD33XXX

Short-circuit ratings 600 V short-

circuit current

@600 V AC [kA] Ferraz/Mersen

fuse, listed J, L,

or RK5 class

fuse

Ferraz/Mersen

fuse, R/C

semiconductor

fuses

0450

0630

0700

1000

400

1400

1800

2250

2500

rating [kA]

3 cycles

N/A

Table 4.13 Short-circuit Ratings, Non-bypassed Models

XXX = blade type: See Ferraz/Mersen catalog for details.

1) When protected by any UL listed fuses or UL listed circuit breakers sized according to the NEC, models provided with a 3-cycle rating are

suitable for use in a circuit with the prospective current noted.

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

24 V DC

177HA425.10

Electrical Installation Operating Guide

4.11 Schematic Diagrams

4 4

1 Control supply (model dependent) 11, 16 Programmable input

2 Outputs 15, 16 Start

3 Remote control inputs 17, 18 Stop

4 Motor thermistor input (PTC only) 25, 18 Reset

5 Relay outputs 13, 14 Relay output A

07, 08 Programmable analog output 21, 22, 24 Relay output B

16, 08 24 V DC output 33, 34 Relay output C

Illustration 4.21 Internally Bypassed Models

177HA426.12

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

L3B

L2B

L1B

24 V DC

Electrical Installation

VLT® Soft Starter MCD 500

1 Control supply (model dependent) 11, 16 Programmable input

2 Outputs 15, 16 Start

3 Remote control inputs 17, 18 Stop

4 Motor thermistor input (PTC only) 25, 18 Reset

5 Relay outputs 13, 14 Relay output A

07, 08 Programmable analog output 21, 22, 24 Relay output B

16, 08 24 V DC output 33, 34 Relay output C

Illustration 4.22 Non-bypassed Models

1) MCD5-0245C current transformers are placed on the output. Bypass terminals are labeled T1B, T2B, and T3B.

100 200 300

100

1000

10000

177HA596.10

Time in seconds to reach 100% of thermal model

Current (%motor full load current)

400 500

600 700

800 900 1000

Product Features Operating Guide

5 Product Features

5.1 Motor Overload Protection

The thermal model used for motor overload in the soft starter has 2 components:

Motor windings: The motor windings have a low

•

thermal capacity and aect the short-term thermal behavior of the motor. The motor windings are where the current generates heat.

Motor body: The motor body has a large thermal

•

capacity and aects the long-term behavior of the motor. The thermal model includes considerations for the following:

- Motor current.

- Iron losses.

- Winding resistance losses.

- Motor body and winding thermal

capacities.

- Cooling during run and cooling at standstill.

- The percentage of the rated capacity of the motor. This sets the shown value for the winding model and is aected by the motor FLC setting among others.

capacity remaining to complete another start successfully.

The memory function of the model ensures that

•

the motor is fully protected in warm-start situations. The model uses data from the realtime clock to account for elapsed cooling time, even if control power has been removed.

The overload protection function provided by this model is compliant with a NEMA 10 curve, but provides superior protection at low levels of overload due to the separation of the winding thermal model.

5 5

NOTICE

Set parameter 1-1 Motor FLC to the rated motor FLC. Do not add the overload rating as the soft starter calculates this rating.

The thermal overload protection used in the soft starter has several advantages over the thermal relays.

The eect of fan cooling is accounted for when

•

the motor is running.

The actual full load current and locked rotor time

•

can be used to tune the model more accurately. The thermal characteristics of the windings are treated separately from the rest of the motor (that is the model recognizes that the windings have low thermal mass and high thermal resistance).

The winding portion of the thermal model

•

responds rapidly compared with the body portion. Thus, the motor can be run closer to its safe maximum operating temperature while still being protected from thermal damage.

The percentage of motor thermal capacity used

•

during each start is stored in memory. The soft starter can be congured to determine automatically whether the motor has sucient thermal

1) MSTC is the motor start time constant. It is dened as the locked

rotor time (in parameter 1-2 Locked Rotor Time) when the locked

rotor current is 600% of FLC.

Illustration 5.1 Protection Degree Compared to Overload

Adaptive Control

5.2

Adaptive control is motor control based on the performance characteristics of the motor. With adaptive control, select the starting or stopping prole that best matches the load type. The soft starter automatically

controls the motor to match the prole. The VLT® Soft Starter MCD 500 oers 3 proles:

MSTC1)=5

MSTC1)=10

MSTC1)=20

7 0 0 %

6 0 0 %

5 0 0 %

3 0 0 %

1 0 0 %

4 0 0 %

2 0 0 %

1 0 % 2 0 % 3 0 % 4 0 % 5 0 %

R o t o r s p e e d ( % f u l l s p e e d )

6 0 % 7 0 % 8 0 % 9 0 % 1 0 0 %

1 7 7 H A 2 8 9 . 1 1

C u r r e n t ( % m o t o r f u l l l o a d c u r r e n t )

7 0 0 %

6 0 0 %

5 0 0 %

3 0 0 %

1 0 0 %

4 0 0 %

2 0 0 %

1 0 % 2 0 % 3 0 % 4 0 % 5 0 % 6 0 % 7 0 % 8 0 % 9 0 % 1 0 0 %

T i m e

1 7 7 H A 2 8 9 . 1 1

C u r r e n t ( % m o t o r f u l l l o a d c u r r e n t )

Product Features

VLT® Soft Starter MCD 500

Early acceleration and deceleration.

•

Constant acceleration and deceleration.

•

Late acceleration and deceleration.

•

Adaptive control uses 2 algorithms; 1 to measure the motor characteristics, and 1 to control the motor. The soft starter uses the rst start to determine the motor characteristics at 0 speed and at maximum speed. During each subsequent start and stop, the soft starter dynamically adjusts its control to ensure that the actual motor performance matches the selected prole throughout the start. If the actual speed is too low for the prole, the soft

starter increases power to the motor. If the speed is too high, the soft starter decreases power.

•

- Set parameter 1-5 Initial Current to a

level that starts the motor with a light load.

- Set parameter 1-4 Current Limit to a level that starts the motor with a heavy load.

The load breaks away easily, but starting time must be extended (for example a centrifugal pump where pipeline pressure must build up slowly).

The electricity supply is limited (for example a generator set), and a slower increase of load allows more time for the supply to respond.

5.3 Starting Modes

5.3.1 Constant Current

Constant current is the traditional form of soft starting. It raises the current from 0 to a specied level and keeps the current stable at that level until the motor has accelerated.

Constant current starting is ideal for applications where the start current must be kept below a

specic level.

1 Parameter 1-5 Initial current

2 Parameter 1-6 Start ramp time

3 Parameter 1-4 Current limit

4 Full voltage current

Illustration 5.3 Example of a 10 s Current Ramp Time

5.3.3 Adaptive Control

In an adaptive control soft start, the soft starter adjusts the current to start the motor within a specied time and uses

1 Parameter 1-5 Initial current

2 Parameter 1-4 Current limit

3 Full voltage current

Illustration 5.2 Example of Constant Current

5.3.2 Current Ramp

Current ramp soft starting raises the current from a specied starting level (1) to a maximum limit (3), over an extended period (2), see Illustration 5.3.

Current ramp starting can be useful for applications where:

•

The load can vary between starts (for example a conveyor, which may start loaded or unloaded).

a selected acceleration prole.

NOTICE

Adaptive control cannot start the motor faster than a direct on-line (DOL) start. If the time set in parameter 1-6 Start ramp time is shorter than the motor DOL start time, starting current may reach DOL levels.

Every application has a particular starting prole based on characteristics of the load and the motor. To meet the requirements of dierent applications, adaptive control oers 3 dierent starting proles. Selecting a prole that matches the inherent prole of the application can help smooth out acceleration across the full start time. Selecting a dierent adaptive control prole can neutralize the inherent prole to some extent.

1 0 %

2 0 %

3 0 %

4 0 %

5 0 %

T i m e

6 0 %

7 0 %

8 0 %

9 0 %

1 0 0 %

1 7 7 H A 5 0 7 . 1 0

S p e e d

7 0 0 %

6 0 0 %

5 0 0 %

3 0 0 %

1 0 0 %

4 0 0 %

2 0 0 %

1 0 % 2 0 % 3 0 % 4 0 % 5 0 %

R o t o r s p e e d ( % f u l l s p e e d )

6 0 % 7 0 % 8 0 % 9 0 % 1 0 0 %

1 7 7 H A 5 0 8 . 1 0

C u r r e n t ( % m o t o r f u l l l o a d c u r r e n t )

Product Features Operating Guide

To use adaptive control to control starting performance:

1. Select Adaptive control in parameter 1-3 Start Mode.

2. Set parameter 1-6 Start Ramp Time.

3. Select the wanted prole in parameter 1-13 Adaptive Start Prole.

4. Set parameter 1-4 Current Limit suciently high to allow a successful start.

The 1st adaptive control start is a constant current start. This start type allows the soft starter to learn the characteristics of the connected motor. The soft starter uses this motor data during subsequent adaptive control starts.

5.3.4 Kick-start

Kick-start provides a short boost of extra torque at the beginning of a start and can be used with current ramp or constant current starting.

Kick-start can be useful to help start loads that require high breakaway torque but then accelerate easily once they are started (for example ywheel loads such as presses).

5 5

1 Early acceleration

2 Constant acceleration

3 Late acceleration

4 Parameter 1-16 Start Ramp Time

Illustration 5.4 Parameter 1-13 Adaptive Start Prole

1 Parameter 1-7 Kick-start Level

2 Parameter 1-8 Kick-start Time

3 Parameter 1-5 Initial Current

4 Parameter 1-6 Start Ramp Time

5 Parameter 1-4 Current Limit

6 Full voltage current

Illustration 5.5 Example of Rotor Speed when using Kick-start

NOTICE

Adaptive control regulates the load according to the programmed prole. Start current varies according to the selected acceleration prole and the programmed start time. The soft starter has to learn the characteristics of a new motor:

If replacing a motor connected to a soft starter

•

programmed for adaptive control starting or stopping.

If the soft starter has been tested on a dierent

•

motor before actual installation.

If parameter 1-1 Motor Full Load Current or parameter 1-12 Adaptive Control Gain is changed, the soft starter automatically relearns the motor characteristics.

Stopping Modes

5.4

5.4.1 Coast to Stop

Coast to stop lets the motor slow at its natural rate, with no control from the soft starter. The time required to stop depends on the type of load.

5.4.2 TVR Soft Stop

Timed voltage ramp reduces the voltage to the motor gradually over a dened time. The load may continue to run after the stop ramp is complete.

Timed voltage ramp stopping can be useful for applications where the stop time has to be extended, or to avoid transients on generator-set supplies.

7 0 %

6 0 %

5 0 %

3 0 %

1 0 %

4 0 %

T i m e

V o l t a g e ( % f u l l v o l t a g e )

2 0 %

8 0 %

9 0 %

1 0 0 %

1 7 7 H A 5 0 9 . 1 0

1 0 %

2 0 %

3 0 %

4 0 %

5 0 %

T i m e

S p e e d

6 0 %

7 0 %

8 0 %

9 0 %

1 0 0 %

1 7 7 H A 5 1 0 . 1 0

1 2

Product Features

VLT® Soft Starter MCD 500

of the connected motor. The soft starter uses this motor data during subsequent adaptive control stops.

NOTICE

Adaptive control regulates the load according to the programmed prole. Stopping current varies according to the selected deceleration prole and stop time.

The soft starter has to learn the characteristics of a new motor:

If replacing a motor connected to a soft starter

•

programmed for adaptive control starting or

1 Parameter 1-11 Stop Time

Illustration 5.6 TVR Soft Stop

5.4.3 Adaptive Control

To use adaptive control to control stopping performance:

1. Select Adaptive control from the Stop Mode menu.

2. Set parameter 1-11 Stop Time.

3. Select the required prole in parameter 1-14 Adaptive Stop Prole.

1 Early deceleration

2 Constant deceleration

3 Late deceleration

4 Parameter 1-10 Stop Time

Illustration 5.7 Parameter 1-14 Adaptive Stop Prole

NOTICE

Adaptive control does not actively slow the motor down and does not stop the motor faster than a coast to stop. To shorten the stopping time of high-inertia loads, use a brake function, see chapter 5.4.5 Brake.

The rst adaptive control stop is a normal soft stop. This stop type allows the soft starter to learn the characteristics

If parameter 1-1 Motor Full Load Current or parameter 1-12 Adaptive Control Gain is changed, the soft starter

automatically relearns the motor characteristics.

5.4.4 Pump Stopping

The hydraulic characteristics of pump systems vary considerably. This variation means that the ideal deceleration prole and stop time vary from application to application. Table 5.1 provides guidelines on selecting between adaptive control proles. For identication of the best prole for the application, test all 3 proles.

Adaptive stop

prole

Late deceleration High-head systems, where even a small

Constant

deceleration

Early deceleration Open pump systems, where uid must drain

Table 5.1 Selection of Adaptive Control Deceleration Proles

5.4.5 Brake

A brake reduces the required stop time of the motor.

During braking, an increased noise level from the motor may be audible. This noise is a normal part of motor braking.

stopping.

If the soft starter has been tested on a dierent

•

motor before actual installation.

Application

decrease in motor/pump speed results in a

rapid transition between forward ow and

reverse ow.

Low to medium head, high-ow

applications, where the uid has high

momentum.

back through the pump without driving the

pump in reverse.

1 0 0 %

7 0 %

0 %

3 0 %

1 7 7 H A 5 1 1 . 1 0

T i m e

S p e e d

Product Features Operating Guide

CAUTION

EQUIPMENT DAMAGE

If the brake torque is set too high, the motor stops before the end of the brake time. The motor suers unnecessary heating, which could result in damage. Careful conguration is required to ensure safe operation of the soft starter and the motor. A high brake torque setting can result in peak currents up to motor DOL being drawn while the motor is stopping. Ensure that protection fuses installed in the motor branch circuit are selected appropriately.

CAUTION

RISK OF OVERHEATING

Brake operation causes the motor to heat faster than the rate calculated by the motor thermal model. If using brake functionality, install a motor thermistor or allow sucient restart delay (parameter 2-11 Restart Delay).

When brake is selected, the soft starter uses DC injection to slow the motor.

too low, the motor does not stop completely and coasts to stop by the end of the braking period.

5 5

1 Parameter 1-11 Stop Time

2 Parameter 1-16 Brake Time

3 Coast to stop time

Illustration 5.8 Brake Time

Braking

Does not require the use of a DC brake contactor.

•

Controls all 3 phases so that the braking currents

•

and associated heating are evenly distributed through the motor.

Braking has 2 stages:

1. Prebrake: Provides an intermediate level of braking to slow motor speed to a point where full brake can be operated successfully (approximately 70% speed).

2. Full brake: Provides maximum braking torque but is ineective at speeds greater than approximately 70%.

To congure the VLT® Soft Starter MCD 500 for brake operation:

1. Set parameter 1-11 Stop Time for the wanted stopping time duration (1), see Illustration 5.8. The stop time is the total brake time. Set the stop time suciently longer than the brake time (parameter 1-16 Brake Time) to allow the prebraking stage to reduce motor speed to approximately 70%. If the stop time is too short, braking is not successful and the motor coasts to stop.

2. Set parameter 1-16 Brake Time to approximately 25% of the programmed stop time. The brake time sets the time for the full brake-stage (2), see Illustration 5.8.

3. Adjust parameter 1-15 Brake Torque so that the wanted stopping performance is achieved. If set

NOTICE

When using DC brake:

1. Connect the mains supply to the soft starter (input terminals L1, L2, L3) in positive phase sequence.

2. Set parameter 2-1 Phase Sequence to Positive

only.

NOTICE

For loads which may vary between braking cycles, install a zero-speed sensor to ensure that the soft starter ends DC braking when the motor stops. This installation avoids unnecessary heating of the motor.

For more information on using the MCD 500 with an external speed sensor (for example for applications with variable load during the braking cycle), see chapter 5.12 DC Brake with External Zero-speed Sensor.

Jog Operation

5.5

Jog runs the motor at reduced speed to allow alignment of the load or to assist servicing. The motor can be jogged in either forward or reverse direction.

The maximum available torque for jog forward is approximately 50–75% of motor full load torque (FLT) depending on the motor. When the motor is jogged in reverse, the torque is approximately 25–50% of FLT. Parameter 15-8 Jog Torque controls how much of the maximum available jog torque the soft starter applies to the motor.

7 0 %

6 0 %

5 0 %

3 0 %

1 0 %

4 0 %

2 0 %

8 0 %

9 0 %

1 0 0 %

3 0 %

4 0 %

5 0 %

2 0 %

1 0 %

0 %

1 7 7 H A 5 1 2 . 1 1

Product Features

VLT® Soft Starter MCD 500

NOTICE

Setting parameter 15-8 Jog Torque above 50% may cause increased shaft vibration.

1 Jog forward

2 Jog reverse

3 Normal operation

CAUTION

REDUCED MOTOR COOLING

Slow speed running is not intended for continuous operation due to reduced motor cooling. Jog operation causes the motor to heat faster than the rate calculated by the motor thermal model.

If using jog, install a motor thermistor, or allow

•

sucient restart delay (parameter 2-11 Restart Delay).

5.6 Inside Delta Operation

Adaptive control, jog, and brake functions are not supported in inside delta (6-wire) operation. If these functions are programmed when the soft starter is connected inside delta, the behavior is as in Table 5.2:

Adaptive

control

start

Adaptive

control

stop

Jog The soft starter issues a warning with the error

Brake The starter performs a coast to stop.

The soft starter performs a constant current start.

If stop time is >0 s, the starter performs a TVR soft

stop. If stop time is set to 9 s, the starter performs a

coast to stop.

message Unsupported Option.

Illustration 5.9 Jog Operation

To activate jog operation, use a programmable input (parameter 3-3 Input A Function).

To stop a jog operation, perform either of the following:

Remove the jog command.

•

Press [O] on the LCP.

•

Activate Starter disable using the LCP

•

programmable inputs.

If the jog command is still present, jog recommences at the end of a restart delay. All other commands except the ones listed are ignored during jog operation.

Table 5.2 Inside Delta Behavior at Adaptive Control, Jog,

and Brake

NOTICE

When connected in inside delta, current imbalance is the only phase loss protection that is active during run. Do not disable parameter 2-2 Current Imbalance during inside delta operation.

NOTICE

Inside delta operation is only possible with mains voltage ≤600 V AC.

NOTICE

Soft start and soft stop are not available during jog operation. Jog is only available for the primary motor.

Product Features Operating Guide

5.7 Typical Start Currents

To determine the typical start current for an application, use this information.

NOTICE

These start current requirements are appropriate and typical in most circumstances. However, the performance and start torque requirements of motors and machines do vary. For further assistance, contact the local Danfoss supplier.

General and water

Agitator 4.0 x FLC

Centrifugal pump 3.5 x FLC

Compressor (screw, unloaded) 3.0 x FLC

Compressor (reciprocating, unloaded) 4.0 x FLC

Conveyor 4.0 x FLC

Fan (damped) 3.5 x FLC

Fan (undamped) 4.5 x FLC

Mixer 4.5 x FLC

Positive displacement pump 4.0 x FLC

Submersible pump 3.0 x FLC

Table 5.3 Typical Start Currents for General and Water

Applications

Pulp and paper

Dryer 4.5 x FLC

Repulper 4.5 x FLC

Shredder 4.5 x FLC

Table 5.6 Typical Start Currents for Pulp and Paper Applications

Petrochemical

Ball mill 4.5 x FLC

Centrifuge 4.0 x FLC

Extruder 5.0 x FLC

Screw conveyor 4.0 x FLC

Table 5.7 Typical Start Currents for Petrochemical Applications

Transport and machine tool

Ball mill 4.5 x FLC

Grinder 3.5 x FLC

Material conveyor 4.0 x FLC

Palletizer 4.5 x FLC

Press 3.5 x FLC

Roller mill 4.5 x FLC

Rotary table 4.0 x FLC

Table 5.8 Typical Start Currents for Transport and Machine

Tool Applications

5 5

Metals and mining

Belt conveyor 4.5 x FLC

Dust collector 3.5 x FLC

Grinder 3.0 x FLC

Hammer mill 4.5 x FLC

Rock crusher 4.0 x FLC

Roller conveyor 3.5 x FLC

Roller mill 4.5 x FLC

Tumbler 4.0 x FLC

Wire draw-machine 5.0 x FLC

Table 5.4 Typical Start Currents for Metals and Mining

Applications

Food processing

Bottle washer 3.0 x FLC

Centrifuge 4.0 x FLC

Dryer 4.5 x FLC

Mill 4.5 x FLC

Palletizer 4.5 x FLC

Separator 4.5 x FLC

Slicer 3.0 x FLC

Lumber and wood products

Bandsaw 4.5 x FLC

Chipper 4.5 x FLC

Circular saw 3.5 x FLC

Debarker 3.5 x FLC

Edger 3.5 x FLC

Hydraulic power pack 3.5 x FLC

Planer 3.5 x FLC

Sander 4.0 x FLC

Table 5.9 Typical Start Currents for Lumber and Wood

Products Applications

Table 5.5 Typical Start Currents for Food Processing

Applications

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

6 7

177HA522.1

24 VD

Product Features

VLT® Soft Starter MCD 500

5.8 Installation with Main Contactor

The VLT® Soft Starter MCD 500 is installed with a main contactor (AC3 rated). Supply control voltage from the input side of the contactor. The soft starter main contactor output controls the main contactor. The main contactor output is by default assigned to output relay A (terminals 13, 14).

1 Control voltage (model dependent) K1 Main contactor

2 24 V DC output F1 Semiconductor fuses (optional)

3 Remote control inputs S1 Start/stop

4 Motor thermistor input (PTC only) S2 Reset contact

5 Relay outputs 13, 14 Relay output A

6 3-phase supply 21, 22, 24 Relay output B

7 Motor terminals 33, 34 Relay output C

Illustration 5.10 Installation with Main Contactor

Parameter settings:

Parameter 4-1 Relay A Function

•

- Select Main contactor - assigns the main contactor function to relay output A (default value).

24 VD

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

L3B

L1B

L2B

6 7

177HA523.1

Product Features Operating Guide

5.9 Installation with Bypass Contactor

The VLT® Soft Starter MCD 500 is installed with a bypass contactor (AC1 rated). The soft starter run output controls the bypass contactor. The run output is by default assigned to output relay B (terminals 21, 22, 24).

5 5

1 Control voltage (model dependent) K1 Bypass contactor

2 24 V DC output F1 Semiconductor fuses (optional)

3 Remote control inputs S1 Start contact

4 Motor thermistor input (PTC only) S2 Stop contact

5 Relay outputs S3 Reset contact

6 3-phase supply 13, 14 Relay output A

7 Motor terminals 21, 22, 24 Relay output B

33, 34 Relay output C

Illustration 5.11 Installation with Bypass Contactor

Parameter settings:

•

Parameter 4-4 Relay B Function.

- Select Run - assigns the run output function to output relay B (default value).

24 VD

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

6 7

177HA524.1

Product Features

VLT® Soft Starter MCD 500

5.10 Emergency Run Operation

In normal operation, the VLT® Soft Starter MCD 500 is controlled via a remote 2-wire signal (terminals 17, 18).

A 2-wire circuit connected to input A (terminals 11, 16) controls emergency run. Closing input A causes the soft starter to run the motor and ignore all trip conditions.

1 Control voltage (model dependent) S1 Start/stop contact

2 24 V DC output S2 Reset contact

3 Remote control inputs S3 Emergency run contact

4 Motor thermistor input (PTC only) 13, 14 Relay output A

5 Relay outputs 21, 22, 24 Relay output B

6 3-phase supply 33, 34 Relay output C

7 Motor terminals

Illustration 5.12 Emergency Run Operation

Parameter settings:

•

Parameter 3-3 Input A Function.

- Select Emergency Run - assigns input A to emergency run function.

Parameter 15-3 Emergency Run.

24 VD

6/T3

2/T1

4/T2

5/L3

3/L2

1/L1

6 7

177HA525.1

Product Features Operating Guide

- Select Enable - enables the emergency run-mode.

NOTICE

Although Emergency run fullls the functionality requirements of re mode, Danfoss does not recommend its use in situations that require testing and/or compliance with specic standards as it is not certied.

5.11 Auxiliary Trip Circuit

In normal operation, the VLT

Soft Starter MCD 500 is controlled via a remote 2-wire signal (terminals 17, 18).

Input A (terminals 11, 16) is connected to an external trip circuit (such as a low-pressure alarm switch for a pumping system). When the external circuit activates, the soft starter trips and stops the motor.

5 5

1 Control voltage (model dependent) S1 Start/stop contact

2 24 V DC output S2 Reset contact

3 Remote control inputs S3 Auxiliary trip contact

4 Motor thermistor input (PTC only) 13, 14 Relay output A

5 Relay outputs 21, 22, 24 Relay output B

6 3-phase supply 33, 34 Relay output C

7 Motor terminals

Illustration 5.13 Auxiliary Trip Circuit

-F1

L3L2L1 N E

-K10

L1 L2 L3

T1 T2 T3

A5A4 A6

15 16 17 18 25

11 16

-K10

-K11

-K10

-K11

T3T2T1

-K11-K10

-A2

177HA619.20

Product Features

VLT® Soft Starter MCD 500

Parameter settings:

Parameter 3-3 Input A Function.

•

- Select Input Trip (N/O) - assigns input A to auxiliary trip (N/O) function.

Parameter 3-4 Input A Name.

•

- Select a name, for example Low Pressure - assigns a name to input A.

Parameter 3-8 Remote Reset Logic.

•

- Select as required, for example Normally Closed - the input behaves like a normally closed contact.

5.12 DC Brake with External Zero-speed Sensor

For loads varying between braking cycles, there are benets in using an external zero-speed sensor to interface

with the VLT® Soft Starter MCD 500 for brake shut-o. This control method ensures that the MCD 500 braking always shuts o when the motor has reached a standstill, thus avoiding unnecessary motor heating.

Illustration 5.14 shows how to use a zero-speed sensor with the MCD 500 to turn o the brake function at motor standstill. The zero-speed sensor (-A2) is often referred to as an underspeed detector. Its internal contact is open at 0 speed and closed at any speed above 0 speed. Once the motor has reached a standstill, terminals 11 and 16 open, and the soft starter is disabled. When the next start command is given, that is next application of K10, terminals 11 and 16 close, and the soft starter is enabled.

Operate the MCD 500 in auto-on mode and set parameter 3-3 Input A Function to Starter disable.

1 Control voltage 15, 16 Start

2 Motor terminals 17, 18 Stop

3 3-phase supply 25, 18 Reset

4 Starter disable

A O (ready)

(shown on soft

starter display)

5 Start signal (2-, 3-,

B Start

or 4-wire)

6 Zero-speed detect C Run

7 Zero-speed sensor D Stop

E Zero speed

Illustration 5.14 Turning O Brake Function at Standstill with

Zero-speed Sensor

For details on conguring DC Brake, see chapter 5.4.5 Brake.

NOTICE

When using DC brake, connect the mains supply to the soft starter (input terminals L1, L2, L3) in positive phase sequence. Then set parameter 2-1 Phase Sequence to Positive only.

177HA526.12

K3T

K10 K11 K12 K13K1

54 55 585756

K2 K1

K12

S2 K13

K1T

K1T K2T K3T

K1 K2

K1 K2S1 K10 K10

K10

K2T

4/T2

6/T3

1/L1

3/L2

5/L3

2/T1

A4 A5 A6

K12

K11 S3

Product Features Operating Guide

5.13 Soft Braking

For high inertia loads, the VLT® Soft Starter MCD 500 can be congured for soft braking.

In this application, the MCD 500 is employed with forward run and braking contactors. When the soft starter receives a start signal (push-button S1), it closes the forward run contactor (K1) and controls the motor according to the programmed primary motor settings.

When the soft starter receives a stop signal (push-button S2), it opens the forward run contactor (K1) and closes the braking contactor (K2) after a delay of approximately 2–3 s (KT1). K12 is also closed to activate the secondary motor settings, which are user-programmed for the wanted stopping performance characteristics.

When motor speed approaches 0, the external zero-speed sensor (A2) stops the soft starter and opens the braking contactor (K2).

1 Control voltage (model dependent) K10 Run relay

2 Remote control inputs K11 Start relay

3 Motor thermistor input (PTC only) K12 Brake relay

4 Relay outputs K13 Zero-speed detector relay

5 3-phase supply K1 Line contactor (run)

6 Motor terminals K2 Line contactor (brake)

A2 Zero-speed sensor K1T Run delay timer

S1 Start contact K2T Brake delay timer

S2 Stop contact K3T Zero-speed detector delay timer

S3 Reset contact

5 5

Illustration 5.15 Soft Braking Conguration

Parameter settings:

•

Parameter 3-3 Input A Function.

- Select Motor Set Select - assigns input A for motor set selection.

- Set starting performance characteristics using the primary motor set (parameter group 1 Primary Motor

Settings).

Product Features

- Set braking performance characteristics using the secondary motor settings (parameter group 7 Secondary

Parameter 4-7 Relay C Function.

•

- Select Trip - assigns trip function to output relay C.

Motor Set).

VLT® Soft Starter MCD 500

NOTICE

If the soft starter trips on supply frequency (parameter 16-5 Frequency) when the braking contactor K2 opens, modify the settings of parameters 2-8 to 2-10.

5.14 Two-speed Motor

The VLT® Soft Starter MCD 500 can be congured for control of 2-speed Dahlander type motors, using a high-speed contactor (K1), low-speed contactor (K2), and a star contactor (K3).

NOTICE

Pole amplitude modulated (PAM) motors alter the speed by eectively changing the stator frequency using external winding conguration. Soft starters are not suitable for use with this type of 2-speed motor.

When the soft starter receives a high-speed start signal, it closes the high-speed contactor (K1) and star contactor (K3). Then it controls the motor according to the primary motor settings (parameters 1-1 to 1-16).

When the soft starter receives a low-speed start signal, it closes the low-speed contactor (K2). This action closes input A and the soft starter controls the motor according to the secondary motor settings (parameters 7-1 to 7-16).

NOTICE

If the soft starter trips on supply frequency (16-5 Frequency) when the high-speed start signal (7) is removed, modify the settings of parameters 2-8 to 2-10.

177HA527.1

2/T1

4/T2

6/T3

1/L1

3/L2

5/L3

K10

K11

K10

K11

K10

K2K11

K10

Product Features Operating Guide

5 5

1 Control voltage 6 Remote low-speed start input K2 Line contactor (low speed)

2 Remote control inputs 7 Remote high-speed start input K3 Star contactor (high speed)

3 Relay outputs K10 Remote start relay (low speed) S1 Reset contact

4 3-phase supply K11 Remote start relay (high speed) 21, 22, 24 Relay output B

5 Motor terminals K1 Line contactor (high speed)

Illustration 5.16 Two-speed Motor Conguration

NOTICE

Contactors K2 and K3 must be mechanically interlocked.

Parameter settings:

Parameter 3-3 Input A Function.

•

- Select Motor Set Select - assigns input A for motor set selection.

•

NOTICE

If the soft starter trips on supply frequency (parameter 16-5 Frequency) when the high-speed signal (7) is removed, modify the settings of parameters 2-9 to 2-10.

- Set high-speed performance characteristics using parameters 1-1 to 2-9.

- Set low-speed performance characteristics using parameters 7-1 to 7-16.

Parameter 4-4 Relay B Function.

- Select Trip - assigns trip function to relay output B.

Operation

VLT® Soft Starter MCD 500

6 Operation

6.1 Control Methods

The VLT® Soft Starter MCD 500 can be controlled:

Via the control keys on the LCP (local control).

•

Via the remote inputs (remote control).

•

Via the serial communication network.

•

Control functions

Local control is only available in hand-on mode.

•

Remote control is only available in auto-on mode.

•

Control via the serial communication network is always disabled in hand-on mode. Enable or disable start/stop

•

commands via the serial network in auto-on mode by changing the setting of parameter 3-2 Comms in Remote.

The MCD 500 can also be congured to autostart or autostop. Autostart/stop operation is only available in auto-on mode. In hand-on mode, the soft starter ignores any autostart/stop setting. To congure autostart/stop operation, set parameters 5-1 to 5-4.

To switch between hand-on mode and auto-on mode, press the keys on the LCP.

[Hand On]: Start the motor and enter hand-on mode.

•

[O]: Stop the motor and enter hand-on mode.

•

[Auto On]: Set the soft starter to auto-on mode.

•

[Reset]: Reset a trip (hand-on mode only).

•

The MCD 500 can also be set to allow local control only or remote control only, using parameter 3-1 Local/Remote.

If parameter 3-1 Local/Remote is set to Remote Control Only, the the serial communication network.

Hand-on mode Auto-on mode

To soft start the motor. Press [Hand On] on the LCP. Activate the Start remote input.

To stop the motor. Press [O] on the LCP. Activate the Stop remote input.

To reset a trip on the soft starter. Press [Reset] on the LCP. Activate the Reset remote input.

Autostart/stop operation. Disabled. Enabled.

Table 6.1 Start, Stop, and Reset in Hand-on Mode and Auto-on Mode

To stop the motor with a coast to stop, regardless of the setting in parameter 1-10 Stop Mode, press same time. The soft starter removes power from the motor and opens the main contactor, and the motor coasts to stop.

[O] key is disabled. Stop the motor by remote control or via

[O] and [Reset] at the

NOTICE

Brake and jog functions operate only with in-line connected motors (see chapter 5.6 Inside Delta Operation).

177HA383.10

Operation Operating Guide

6.2 Operation and LCP

6.2.1 Operating Modes

In hand-on mode:

To soft start the motor, press [Hand On] on the

•

LCP.

To stop the motor, press [O] on the LCP.

•

To reset a trip on the soft starter, press [Reset] on

•

the LCP.

To stop the motor with a coast to stop, regardless

•

of the setting of parameter 1-10 Stop mode, press [O] and [Reset] at the same time. The soft starter removes power from the motor and opens the main contactor, and then the motor coasts to stop.

In auto-on mode:

To soft start the motor, activate the Start remote

•

input.

To stop the motor, activate the Stop remote input.

•

To reset a trip on the soft starter, activate the

•

Reset remote input.

NOTICE

Brake and jog functions operate only with in-line connected motors (see chapter 4.3.3 Inside Delta Instal- lation).

6.2.2 The LCP

1 4-line display for status and programming details.

2 Display control keys:

[Status]: Returns to the status displays.

[Quick Menu]: Opens the Quick Menu.

[Main Menu]: Opens the Main Menu.

[Alarm Log]: Opens the Alarm Log.

3 Menu navigation keys:

[Back]: Exits the menu or parameter, or cancels a

parameter change.

[OK]: Enters a menu or parameter, or saves a

parameter change.

[▲]/[▼]:

Scroll to the next or previous menu or

parameter.

Change the setting of the current

parameter.

Scroll through the status screens.

4 Soft starter local control keys:

[Hand On]: Starts the motor and enters local

5 Remote input status indicators.

Illustration 6.1 LCP Layout

control mode.

[O]: Stops the motor (only active in hand-on

mode).

[Auto On]: Sets the soft starter to auto-on mode.

[Reset]: Resets a trip (hand-on mode only).

Operation

VLT® Soft Starter MCD 500

6.3 Remote-mounted LCP

A remote-mounted LCP can be installed with the VLT® Soft Starter MCD 500. The control panel LCP 501 can be mounted up to 3 m (9.8 ft) away from the soft starter, for control and monitoring.

The soft starter can be controlled and programmed from either the remote LCP or the LCP on the soft starter. Both displays show the same information.

The remote LCP also allows parameter settings to be copied between soft starters.

6.3.1 Synchronizing the LCP and the Soft Starter

The DB9 cable can be connected/disconnected from the LCP while the soft starter runs.

The rst time an LCP is plugged into a soft starter, the soft starter copies its parameter settings to the LCP.

New display detected

If the LCP has previously been used with a VLT® Soft Starter MCD 500, select whether to copy the parameters from the LCP to the soft starter, or from the soft starter to the LCP.

NOTICE

While the LCP synchronizes, only the [▲], [▼], [OK], and [O] keys are enabled.

NOTICE

The LCP can be removed or replaced while the soft starter is running. It is not necessary to remove mains or control voltage.

6.4 Welcome Screen

When control power is applied, the soft starter shows the welcome screen.

Ready S1

Welcome

1.05/2.0/1.13

MCD5-0053-T5-G1-

CV2

Third display line: Software versions for remote LCP, control software,

model software.

Fourth display line: Product model number.

NOTICE

The LCP version is only shown if a remote LCP 501 is connected when control power is applied. If no remote LCP is present, only the control software and model software versions are shown.

6.5 Local Control Keys

To select the required option:

Press the [▲] and [▼] keys.

A dotted line surrounds the selected option.

2. Press [OK] to proceed with the Copy Parameters selection.

2a Display to soft starter.

2b Soft starter to display.

Copy parameters

Display to soft starter

Soft starter to display

NOTICE

If the parameter software version in the LCP is dierent from the software version of the soft starter, only Starter to Display is available.

If parameter 3-1 Local/Remote is set to LCL/RMT Anytime or LCL/RMT When OFF, the [Hand On] and [Auto On] keys are

always active. If the soft starter is in auto-on mode, pressing [Hand On] enters hand-on mode and starts the motor.

If parameter 3-1 Local/Remote is set to Remote Control Only, the [O] key is disabled. Stop the motor by remote control or via the serial communication network.

Displays

6.6

The LCP shows a wide range of performance information about the soft starter. Press [Status] to access the status display screens, then press [▲] and [▼] to select the information to be shown. To return to the status screens from within a menu, press [Back] repeatedly, or press [Status]. Available status information:

Temperature monitoring.

•

Programmable screen (see parameters 8-2 to 8-5).

•

Current.

•

Frequency.

•

Operation Operating Guide

Motor power.

•

Last start information.

•

Date and time.

•

SCR conduction bar graph.

•

Performance graphs.

•

NOTICE

Screens shown here are with the default settings.

6.6.1 Temperature Monitoring Screen (S1)

The temperature screen shows the temperature of the motor as a percentage of total thermal capacity. It also shows which motor data set is in use.

The temperature monitoring screen is the default status screen.

Ready S1

MS1 000.0A 000.0kW

Primary Motor Set

M1 000%

6.6.2 Programmable Screen (S2)

The user-programmable screen of the soft starter can be congured to show the most important information for the particular application. Use parameters 8-2 to 8-5 to select which information to show.

Ready S2

MS1 000.0A 000.0kW

-.-- pf

00000 hrs

6.6.5 Frequency Monitoring Screen (S5)

The frequency screen shows the mains frequency as measured by the soft starter.

Ready S5

MS1 000.0A 000.0kW

00.0Hz

6.6.6 Motor Power Screen (S6)

The motor power screen shows motor power (kW, hp, and kVA) and power factor.

Ready S6

MS1 000.0A 000.0kW

000.0kW 0000HP

0000kVA -. - - pf

6.6.7 Last Start Information (S7)

The last start information screen shows details of the most recent successful start:

Start duration, (s).

•

Maximum start current drawn (as a percentage of

•

motor full load current).

Calculated rise in motor temperature.

•

Ready S7

MS1 000.0A 000.0kW

Last start 000 s

000% FLC

ΔTemp 0%

6.6.8 Date and Time (S8)

6.6.3 Average Current (S3)

The average current screen shows the average current of all 3 phases.

Ready S3

MS1 000.0A 000.0kW

0.0A

The date and time screen shows the current system date and time (24-hour format). For details on setting the date and time, see chapter 9.1 Set Date and Time.

Ready S8

MS1 000.0A 000.0kW

YYYY MMM DD

HH:MM:SS

6.6.4 Current Monitoring Screen (S4)

The current screen shows real-time line current on each phase.

Ready S4

MS1 000.0A 000.0kW

Phase currents

000.0A 000.0A 000.0A

1 7 7 H A 5 1 3 . 1 0

Operation

VLT® Soft Starter MCD 500

6.6.9 SCR Conduction Bar Graph

The SCR conduction bar graph shows the level of conduction on each phase.

Illustration 6.2 Bar Graph

6.6.10 Performance Graphs

The VLT® Soft Starter MCD 500 can show real-time performance information for:

Current.

•

Motor temperature.

•

Motor kW.

•

Motor kVA.

•

Motor power factor.

•

The newest information is shown at the right side of the screen. Older data is not stored. To allow past performance to be analyzed, the graph can also be paused. To pause or unpause the graph, press and hold [OK] for more than

0.5 s.

NOTICE

The soft starter does not collect data while the graph is paused. When graphing resumes, a small gap is shown between the old data and the new data.

Programming Operating Guide

7 Programming

It is possible to access the programming menus at any time, including while the soft starter is running. All changes take eect immediately.

7.1 Access Control

A 4-digit security access code protects critical parameters (parameter group 15 Restricted Parameters and higher), preventing unauthorized users from viewing or modifying parameter settings.

If attempts are made to enter a restricted parameter group, the LCP prompts for an access code. The access code is requested once for the programming session, and authorization continues until the menu is closed.

To enter the access code:

1. Press [Back] and [OK] to select a digit.

Press [▲] and [▼] to change the value.

3. When all 4 digits match the access code, press [OK].

The LCP shows an acknowledgement message before continuing.

Enter Access Code

####

Access Allowed

SUPERVISOR

To change the access code, use parameter 15-1 Access Code.

NOTICE

The security access code also protects the protection simulation and output simulation. The counters and thermal model reset can be viewed without entering an access code, but an access code must be entered to reset. The default access code is 0000.

To prevent users from altering parameter settings, lock the menus. The adjustment lock can be set to allow Read &

Write, Read Only, or No Access in parameter 15-2 Adjustment Lock.

If attempting to change a parameter value or access the Main Menu when the adjustment lock is active, an error message is shown:

Access Denied

Adj Lock is On

7.2 Quick Menu

[Quick Menu] provides access to the menus for setting up the soft starter for simple applications.

7.2.1 Quick Set-up

Quick set-up provides access to commonly used parameters, allowing conguration of the soft starter as required for the application. For details of individual parameters, see chapter 8 Parameter Descriptions.

1 Primary Mtr Set

1-1 Motor FLC

1-3 Start Mode

1-4 Current Limit

1-5 Initial Current

1-6 Start Ramp Time

1-9 Excess Start Time

1-10 Stop Mode

1-11 Stop Time

2 Protection

2-1 Phase Sequence

2-4 Undercurrent

2-5 Undercurrent Dly

2-6 Inst Overcurrent

2-7 Inst Overcurrent Dly

3 Inputs

3-3 Input A Function

3-4 Input A Name

3-5 Input A Trip

3-6 Input A Trip Dly

3-7 Input A Initial Dly

4 Outputs

4-1 Relay A Function

4-2 Relay A On Delay

4-3 Relay A O Delay

4-4 Relay B Function

4-5 Relay B On Delay

4-6 Relay B O Delay

4-7 Relay C Function

4-8 Relay C On Delay

4-9 Relay C O Delay

4-10 Low Current Flag

4-11 High Current Flag

4-12 Motor Temp Flag

5 Start/Stop Timers

5-1 Auto-Start Type

5-2 Auto-Start Time

5-3 Auto-Stop Type

7 7

Programming

VLT® Soft Starter MCD 500

1 Primary Mtr Set

5-4 Auto-Stop Time

8 Display

8-1 Language

8-2 User Scrn Top L

8-3 User Scrn Top R

8-4 User Scrn Btm L

8-5 User Scrn Btm R

Table 7.1 Parameters in the Quick Set-up Menu

Undamped fan

Motor full load current

Start mode Adaptive control

Adaptive start prole Constant acceleration

Start ramp time 20 s

Excess start time 30 s

Locked rotor time 20 s

Table 7.5 Suggested Values for Undamped Fan Applications

Compressor screw

7.2.2 Application Set-up Examples

Motor full load current

The application set-ups menu makes it easy to congure the soft starter for common applications. The soft starter selects the parameters relevant to the application and

Start mode Constant current

Start ramp time 5 s

Current limit 400%

suggests a typical setting. Each parameter can be adjusted to suit the exact requirements.

Table 7.6 Suggested Values for Compressor Screw Applications

On the display, the highlighted values are suggested values. The values indicated by ▶ are the loaded values.

Always set parameter 1-1 Motor FLC to match the motor nameplate full load current. The suggested value for motor FLC is the minimum FLC of the soft starter.

Centrifugal pump

Motor full load current

Start mode Adaptive control

Adaptive start prole Early acceleration

Start ramp time 10 s

Stop mode Adaptive control

Adaptive stop prole Late deceleration

Stop time 15 s

Table 7.2 Suggested Values for Centrifugal Pump Applications

Submersible pump

Motor full load current

Start mode Adaptive control

Adaptive start prole Early acceleration

Start ramp time 5 s

Stop mode Adaptive control

Adaptive stop prole Late deceleration

Stop time 5 s

Compressor recip

Motor full load current

Start mode Constant current

Start ramp time 10 s

Current limit 450%

Table 7.7 Suggested Values for Compressor Recip Applications

Conveyor

Motor full load current

Start mode Constant current

Start ramp time 5 s

Current limit 400%

Stop mode Adaptive control

Adaptive stop prole Constant deceleration

Stop time 10 s

Table 7.8 Suggested Values for Conveyor Applications

Crusher rotary

Motor full load current

Start mode Constant current

Start ramp time 10 s

Current limit 400%

Excess start time 30 s

Locked rotor time 20 s

Table 7.3 Suggested Values for Submersible Pump Applications

Table 7.9 Suggested Values for Crusher Rotary Applications

Damped fan

Motor full load current

Start mode Constant current

Current limit 350%

Table 7.4 Suggested Values for Damped Fan Applications

Programming Operating Guide

Crusher jaw

Motor full load current

Start mode Constant current

Start ramp time 10 s

Current limit 450%

Excess start time 40 s

Locked rotor time 30 s

Table 7.10 Suggested Values for Crusher Jaw Applications

7.2.3 Loggings

To view performance information in real-time graphs, enter the Loggings menu.

Current (%FLC).

•

Motor Temp (%).

•

Motor kW (%).

•

Motor kVA (%).

•

Motor pf.

•

The newest information is shown at the right side of the screen. The graph can be paused to analyze data by pressing and holding the [OK] key. To restart the graph, press and hold [OK].

7.3.1 Parameters

Parameters allow viewing and changing all programmable parameters that control how the soft starter operates.

To open Parameters, press [Main Menu] then select Parameters.

Navigating through parameters

To scroll through parameter groups, press [▲] or

•

[▼].

To view the parameters in a group, press [OK].

•

To return to the previous level, press [Back].

•

To close Parameters, press the [Back].

•

Changing a parameter value

Scroll to the appropriate parameter and press

•

[OK] to enter edit mode.

To alter the parameter setting, press [▲] and [▼].

•

To save changes, press [OK]. The setting shown

•

on the display is saved and the LCP returns to the parameter list.

To cancel changes, press [Back]. The LCP returns

•

to the parameter list without saving changes.

7 7

Main Menu

7.3

[Main Menu] provides access to menus for setting up the soft starter for advanced applications and for monitoring performance.

7.3.2 Parameter Shortcut

The VLT® Soft Starter MCD 500 also includes a parameter shortcut, which gives direct access to a parameter within the Parameters menu.

To access the parameter shortcut, press [Main

•

Menu] for 3 s.

Press [▲] or [▼] to select the parameter group.

•

Press [OK] or [Back] to move the cursor.

•

Press [▲] or [▼] to select the parameter number.

•

Parameter shortcut

Please enter a

parameter number

01-01

Programming

VLT® Soft Starter MCD 500

7.3.3 Parameter List

1 Primary Mtr Set 4 Outputs 7-12 Adaptv Ctrl Gain-2

1-1 Motor FLC 4-1 Relay A Function 7-13 Adaptv Start Prof-2

1-2 Locked Rotor Time 4-2 Relay A On Delay 7-14 Adaptv Stop Prof-2

1-3 Start Mode 4-3 Relay A O Delay 7-15 Brake Torque-2

1-4 Current Limit 4-4 Relay B Function 7-16 Brake Time-2

1-5 Initial Current 4-5 Relay B On Delay 8 Display

1-6 Start Ramp Time 4-6 Relay B O Delay 8-1 Language

1-7 Kick-start Level 4-7 Relay C Function 8-2 User Scrn Top L

1-8 Kick-start Time 4-8 Relay C On Delay 8-3 User Scrn Top R

1-9 Excess Start Time 4-9 Relay C O Delay 8-4 User Scrn Btm L

1-10 Stop Mode 4-10 Low Current Flag 8-5 User Scrn Btm R

1-11 Stop Time 4-11 High Current Flag 8-6 Graph Timebase

1-12 Adaptv Control Gain 4-12 Motor Temp Flag 8-7 Graph Max Adj

1-13 Adaptv Start Prole 4-13 Analog Output A 8-8 Graph Min Adj

1-14 Adaptv Stop Prole 4-14 Analog A Scale 8-9 Mains Ref Volt

1-15 Brake Torque 4-15 Analog A Max Adj 15 Restrict Paramtr

1-16 Brake Time 4-16 Analog A Min Adj 15-1 Access Code

2 Protection 5 Start/Stop Timers 15-2 Adjustment Lock

2-1 Phase Sequence 5-1 Auto-Start Type 15-3 Emergency Run

2-2 Current Imbalance 5-2 Auto-Start Time 15-4 Current Calibrat

2-3 Current Imbal Dly 5-3 Auto-Stop Type 15-5 Main Cont Time

2-4 Undercurrent 5-4 Auto-Stop Time 15-6 Bypass Cont Time

2-5 Undercurrent Dly 6 Auto-Reset 15-7 Motor Connection

2-6 Inst Overcurrent 6-1 Auto-Reset Action 15-8 Jog Torque

2-7 Inst Ocrnt Dly 6-2 Maximum Resets 16 Protection Action

2-8 Frequency Check 6-3 Reset Dly Grp A & B 16-1 Motor Overload

2-9 Freq Variation 6-4 Reset Delay Grp C 16-2 Current Imbalance

2-10 Frequency Delay 7 Secondary Mtr Set 16-3 Undercurrent

2-11 Restart Delay 7-1 Motor FLC-2 16-4 Inst Overcurrent

2-12 Motor Temp Check 7-2 Lock Rotor Time-2 16-5 Frequency

3 Inputs 7-3 Start Mode-2 16-6 Heat sink Overtemp

3-1 Local/Remote 7-4 Current Limit-2 16-7 Excess Start Time

3-2 Comms in Remote 7-5 Initial Crnt-2 16-8 Input A Trip

3-3 Input A Function 7-6 Start Ramp-2 16-9 Motor Thermistor

3-4 Input A Name 7-7 Kick-start Lvl-2 16-10 Starter Comms

3-5 Input A Trip 7-8 Kick-start Time-2 16-11 Network Comms

3-6 Input A Trip Dly 7-9 Excess Strt Time-2 16-12 Battery/Clock

3-7 Input A Initial Dly 7-10 Stop Mode-2 16-13 Low Control Volts

3-8 Remote Reset Logic 7-11 Stop Time-2 – –

Parameter Descriptions Operating Guide

8 Parameter Descriptions

8.1 Primary Motor Settings

NOTICE

Default settings are marked with *.

The parameters in Primary Motors Settings congure the soft starter to match the connected motor. These parameters describe the operating characteristics of the motor and allow the soft starter to model the motor temperature.

NOTICE

Parameter 1-2 Locked Rotor Time determines the trip

current for motor overload protection. Its default setting provides motor overload protection:

Class 10.

•

Trip current 105% of FLA, or equivalent.

•

1-1 Motor FLC

Option: Function:

Model

dependent

Matches the soft starter to the connected

motor full load current. Set to the full load

current (FLC) rating shown on the motor

nameplate.

NOTICE

The setting for this parameter sets the basis for calculation of all current-based protection settings.

1-2 Locked Rotor Time

Range: Function:

10 s* [0:01–2:00

(min:s)]

Sets the maximum length of the time the

motor can sustain locked rotor current from

cold before reaching its maximum

temperature. Set according to the motor

datasheet.

1-5 Initial Current

Range: Function:

350%* [100–

600%

FLC]

1-6 Start Ramp Time

Range: Function:

10 s* [1–

180 s]

1-7 Kick-start Level

Range: Function:

500%* [100–

700% FLC]

Sets the initial start current level for current

ramp starting as a percentage of motor full load

current. Set so that the motor begins to

accelerate immediately after a start is initiated.

If current ramp starting is not required, set the

initial current equal to the current limit. See

chapter 5.3 Starting Modes for more details.

Sets the total start time for an adaptive control

start or the ramp time for current ramp

starting (from the initial current to the current

limit). See chapter 5.3 Starting Modes for more

details.

CAUTION

INCREASED TORQUE LEVEL

Kick-start subjects the mechanical equipment to increased torque levels.

•

Sets the level of the kick-start current.

8 8

Ensure that the motor, load, and couplings can handle the additional torque before using this feature.

1-3 Start Mode

Option: Function:

Selects the soft start mode. See

chapter 5.3 Starting Modes for more details.

Constant current*

Adaptive control

1-4 Current Limit

Range: Function:

350%* [100–

600%

FLC]

Sets the current limit for constant current and

current ramp soft starting as a percentage of

motor full load current. See

chapter 5.3 Starting Modes for more details.

Parameter Descriptions

VLT® Soft Starter MCD 500

1-8 Kick-start Time

Range: Function:

0000 ms* [0–

2000 ms]

CAUTION

INCREASED TORQUE LEVEL

Kick-start subjects the mechanical equipment to increased torque levels.

•

Ensure that the motor, load, and couplings can handle the additional torque before using this

1-12 Adaptive Control Gain

Range: Function:

NOTICE

Leave the gain setting at the default level unless adaptive control performance is not satisfactory. If the motor accelerates or decelerates too quickly at the end of a start or stop, increase the gain setting by 5–10%. If the motor speed uctuates during starting or stopping, decrease the gain setting slightly.

feature.

1-13 Adaptive Start Prole

Sets the kick-start duration. A setting of 0

disables kick-start. See chapter 5.3 Starting

Modes for more details.

1-9 Excess Start Time

Range: Function:

Excess start time is the maximum time the soft

20 s* [0:00–

4:00

(min:s)]

starter attempts to start the motor. If the

motor does not reach full speed within the

programmed limit, the soft starter trips. Set for

a period slightly longer than required for a

normal healthy start. A setting of 0 disables

excess start time protection.

Set as required.

1-10 Stop Mode

Option: Function:

Selects the stop mode. See

chapter 5.4 Stopping Modes for more details.

Coast to stop*

TVR soft stop

Adaptive control

Brake

1-11 Stop Time

Range: Function:

0s* [0:00–

4:00

(min:s)]

Sets the time for soft stopping the motor using

timed voltage ramp or adaptive control. If a main

contactor is installed, the contactor must remain

closed until the end of the stop time. To control

the main contactor, use a programmable output

congured to Run. Sets the total stopping time

when using brake. See chapter 5.4 Stopping

Modes for more details.

1-12 Adaptive Control Gain

Range: Function:

75%* [1–200%] Adjusts the performance of adaptive control.

This setting aects both starting and stopping

control.

Option: Function:

Selects which prole the soft starter uses

for an adaptive control soft start. See

chapter 5.4 Stopping Modes for more

details.

Early acceleration

Constant acceleration*

Late acceleration

1-14 Adaptive Stop Prole

Option: Function:

Selects which prole the soft starter uses

for an adaptive control soft stop. See

chapter 5.4 Stopping Modes for more

details.

Early deceleration

Constant

deceleration*

Late acceleration

8.1.1 Brake

Brake uses DC injection to slow the motor actively. See chapter 5.4 Stopping Modes for more details.

1-15 Brake Torque

Range: Function:

20%* [20–100%] Sets the amount of brake torque the soft

starter uses to slow the motor.

1-16 Brake Time

Range: Function:

1 s* [1–30 s] Sets the duration for DC injection during a

braking stop.

NOTICE

This parameter is used with parameter 1-11 Stop Time. See chapter 5.4 Stopping Modes for details.

Parameter Descriptions Operating Guide

8.2 Protection

2-1 Phase Sequence

Option: Function:

Selects which phase sequences the soft starter

allows at a start. During its prestart checks, the

soft starter examines the sequence of the

phases at its input terminals. If the actual

sequence does not match the selected option,

the soft starter trips.

Any sequence*

Positive only

Negative only

8.2.1 Current Imbalance

If the currents on the 3 phases vary by more than a specied amount, the soft starter can be congured to trip. The imbalance is calculated as the dierence between the highest and lowest currents on all 3 phases, as a percentage of the highest current.

Current imbalance detection is desensitized by 50% during starting and soft stopping.

2-2 Current Imbalance

Range: Function:

30%* [10–50%] Sets the trip point for current imbalance

protection.

2-3 Current Imbalance Delay

Range: Function:

3 s* [0:00–4:00

(min:s)]

Slows the response of the soft starter to

current imbalance, avoiding trips due to

momentary uctuations.

8.2.2 Undercurrent

If the average current of all 3 phases drops below a specied level while the motor is running, the soft starter can be congured to trip.

2-4 Undercurrent

Range: Function:

20%* [0–

100%]

2-5 Undercurrent Delay

Range: Function:

5 s* [0:00–4:00

(min:s)]

Sets the trip point for undercurrent protection,

as a percentage of motor full load current. Set to

a level between the normal motor working

range and the motor magnetizing (no load)

current (typically 25–35% of full load current). A

setting of 0% disables undercurrent protection.

Slows the response of the soft starter to

undercurrent, avoiding trips due to

momentary uctuations.

8.2.3 Instant Overcurrent

If the average current of all 3 phases exceeds a specied level while the motor is running, the soft starter can be congured to trip.

2-6 Instantaneous Overcurrent

Range: Function:

400%* [80–600%

FLC]

Sets the trip point for instant overcurrent

protection as a percentage of motor full

load current.

2-7 Instantaneous Overcurrent Delay

Range: Function:

0 s* [0:00–1:00

(min:s)]

Slows the response of the soft starter to

overcurrent, avoiding trips due to

momentary overcurrent events.

8.2.4 Frequency Trip

The soft starter monitors mains frequency throughout operation and can be congured to trip if the frequency varies beyond a specied tolerance.

2-8 Frequency Check

Option: Function:

Determines when the soft starter monitors for a

frequency trip.

Do not check

Start only

Start/run*

Run only

2-9 Frequency Variation

Option: Function:

Selects the soft starter tolerance for frequency

variation.

±2 Hz ±5 Hz* ±10 Hz ±15 Hz

2-10 Frequency Delay

Range: Function:

1 s* [0:01–4:00

(min:s)]

Slows the response of the soft starter to

frequency disturbances, avoiding trips due to

momentary uctuations.

NOTICE

If the mains frequency drops below 35 Hz or rises above 75 Hz, the soft starter trips immediately.

8 8

Parameter Descriptions

VLT® Soft Starter MCD 500

2-11 Restart Delay

Range: Function:

10s* [00:01–

60:00

(min:s)]

The soft starter can be congured to force a

delay between the end of a stop and the

beginning of the next start. During the restart

delay, the display shows the time remaining

before another start can be attempted.

NOTICE

The restart delay is measured from the end of each stop. Changes to the restart delay setting take eect after the next stop.

2-12 Motor Temperature Check

Option: Function:

Selects whether the soft starter veries that the

motor has sucient thermal capacity for a

successful start. The soft starter compares the

calculated motor temperature with the

temperature rise from the last motor start. The soft

Do not

check*

Check

8.3 Inputs

3-1 Local/Remote

Option: Function:

Lcl/rmt

anytime*

Local control

only

Remote control

only

3-2 Comms in Remote

Option: Function:

Disable ctrl in

RMT

Enable ctrl in

RMT*

starter only operates if the motor is cool enough

to start successfully.

Selects when the [Auto On] and [Hand On]

can be used to switch to hand-on mode or

auto-on mode.

Change between local and remote control at

any time.

All remote inputs are disabled.

[Hand On] and [Auto On] are disabled.

Selects whether the soft starter accepts start

and stop commands from the serial communi-

cation network when in Remote mode.

Commands that are always enabled:

Force comms trip.

•

Local/remote control.

•

Test start.

•

Reset.

•

3-3 Input A Function

Option: Function:

Selects the function of input A.

Motor set

select*

Input trip

(N/O)

Input trip

(N/C)

Local/remote

select

Emergency

run

Starter

disable

Jog forward Activates jog operation in a forward direction

Jog reverse Activates jog operation in reverse direction

The soft starter can be congured with 2

separate sets of motor data. The primary motor

data is programmed using parameters 1-1 to 1-16.

The secondary motor data is programmed using

parameters 7-1 to 7-16.

To use the secondary motor data, set this

parameter to Motor Set Select and close terminals

11 and 16 before giving a start command. The

soft starter checks which motor data to use at a

start and uses that motor data for the entire

start/stop cycle.

Input A can be used to trip the soft starter. When

this parameter is set to Input Trip (N/O), a closed

circuit across terminals 11 and 16 trips the soft

starter (parameters 3-5 to 3-7).

When this parameter is set to Input Trip (N/C), an

open circuit across terminals 11 and 16 trips the

soft starter (parameters 3-5 to 3-7).

Input A can be used to select between local and

remote control, instead of using the LCP keys.

When the input is open, the soft starter is in

hand-on mode and can be controlled via the LCP.

When the input is closed, the soft starter is in

remote mode. The [Hand On] and [Auto On] keys

are disabled, and the soft starter ignores any

local/remote select command from the serial

communications network.

To use Input A to select between local and

remote control, set parameter 3-1 Local/Remote to

LCL/RMT Anytime.

In emergency run, the soft starter continues to

run until stopped, ignoring all trips and warnings

(see parameter 15-3 Emergency Run for details).

Closing the circuit across terminals 11 and 16

activates emergency run.

Opening the circuit ends emergency run and the

soft starter stops the motor.

The soft starter can be disabled via the control

inputs. An open circuit across terminals 11 and

16 disables the soft starter. The soft starter does

not respond to start commands. If running, the

soft starter allows the motor to coast to stop,

ignoring the soft stop mode set in parameter

1-10 Stop Mode.

When the circuit across terminals 11 and 16 is

opened, the soft starter allows the motor to

coast to stop.

(operates only in Remote mode).

Parameter Descriptions Operating Guide

3-4 Input A Name

Option: Function:

Selects a message for the LCP to show when

input A is active.

Input trip*

Low pressure

High pressure

Pump fault

Low level

High level

No ow

Starter disable

Controller

PLC

Vibration alarm

3-5 Input A Trip

Option: Function:

Selects when an input trip can occur.

Always active* A trip can occur at any time when the soft

starter is receiving power.

Operating only A trip can occur while the soft starter is

running, stopping, or starting.

Run only A trip can only occur while the soft starter is

running.

3-6 Input A Trip Delay

Range: Function:

0 s* [0:00–4:00 (min:s)] Sets delay between the input

activating and soft starter tripping.

3-7 Input A Initial Delay

Range: Function:

0 s* [00:00–

30:00 (min:s)]

Sets a delay before an input trip can occur.

The initial delay is counted from the time a

start signal is received. The state of the input

is ignored until the initial delay has elapsed.

3-8 Remote Reset Logic

Option: Function:

Selects whether the remote reset input of the

soft starter (terminals 25 and 18) is normally

open or normally closed.

Normally closed*

Normally open

8.4 Outputs

4-1 Relay A Function

Option: Function:

Selects the function of relay A (normally open).

O Relay A is not used

Main

contactor*

The relay closes when the soft starter receives

a start command and remains closed as long

as the motor receives voltage.

4-1 Relay A Function

Option: Function:

Run The relay closes when the starter changes to

run state.

Trip The relay closes when the starter trips.

Warning The relay closes when the starter issues a

warning.

Low current

ag

High current

ag

Motor temp

ag

The relay closes when the low current ag

activates (parameter 4-10 Low Current Flag).

The relay closes when the high current ag

activates (parameter 4-11 High Current Flag).

The relay closes when the motor temperature

ag activates (parameter 4-12 Motor

Temperature Flag).

8.4.1 Relay A Delays

The soft starter can be congured to wait before opening or closing relay A.

4-2 Relay A On Delay

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for closing relay A.

4-3 Relay A O Delay

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for reopening relay A.

8.4.2 Relays B and C

Parameters 4-4 to 4-9 congure the operation of relays B and C in the same way as parameters 4-1 to 4-3 congure relay A. See parameter 4-2 Relay A On Delay and parameter 4-3 Relay A O Delay for details.

Relay B is a changeover relay.

•

Relay C is normally open.

•

4-4 Relay B Function

Option: Function:

Selects the function of relay B (changeover).

O Relay B is not used.

Main

contactor

Run* The relay closes when the soft starter changes

Trip The relay closes when the soft starter trips.

Warning The relay closes when the soft starter issues a

Low current

ag

High current

ag

The relay closes when the soft starter receives a

start command and remains closed as long as

the motor is receiving voltage.

to run state.

warning.

The relay closes when the low current ag

activates (parameter 4-10 Low Current Flag).

The relay closes when the high current ag

activates (parameter 4-11 High Current Flag).

8 8

Parameter Descriptions

VLT® Soft Starter MCD 500

4-4 Relay B Function

Option: Function:

Motor temp

ag

The relay closes when the motor temperature

ag activates (parameter 4-12 Motor Temperature

Flag).

4-5 Relay B On Delay

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for closing relay B.

4-6 Relay B O Delay

4-10 Low Current Flag

Range: Function:

50%* [1–100%

FLC]

Sets the level at which the low current

ag operates, as a percentage of motor

full load current.

4-11 High Current Flag

Range: Function:

100%* [50–600%

FLC]

Sets the level at which the high current

ag operates, as a percentage of motor

full load current.

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for reopening relay B.

8.4.4 Motor Temperature Flag

4-7 Relay C Function

Option: Function:

Selects the function of relay C (normally open).

O Relay C is not used.

Main

contactor

Run The relay closes when the soft starter changes

Trip* The relay closes when the soft starter trips.

Warning The relay closes when the soft starter issues a

Low current

ag

High current

ag

Motor temp

ag

The relay closes when the soft starter receives a

start command and remains closed as long as

the motor is receiving voltage.

to run state.

warning.

The relay closes when the low current ag

activates (parameter 4-10 Low Current Flag).

The relay closes when the high current ag

activates (parameter 4-11 High Current Flag).

The relay closes when the motor temperature

ag activates (parameter 4-12 Motor Temperature

Flag).

4-8 Relay C On Delay

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for closing relay C.

4-9 Relay C O Delay

Range: Function:

0 s* [0:00–5:00 (min:s)] Sets the delay for reopening relay C.

8.4.3 Low Current Flag and High Current Flag

The soft starter has low and high current ags to give early warning of abnormal operation. The current ags can be congured to indicate an abnormal current level during operation between the normal operating level and the undercurrent or instant overcurrent trip levels. The ags can signal the situation to external equipment via 1 of the programmable outputs. The ags clear when the current returns within the normal operating range by 10% of the programmed ag value.

The soft starter has a motor temperature ag to give early warning of abnormal operation. The ag can indicate that the motor is operating above its normal operating temperature, but lower than the overload limit. The ag can signal the situation to external equipment via 1 of the programmable outputs.

4-12 Motor Temperature Flag

Range: Function:

80%* [0–160%] Sets the level at which the motor temperature

ag operates, as a percentage of the motor

thermal capacity.

8.4.5 Analog Output A

The soft starter has an analog output, which can be connected to associated equipment to monitor motor performance.

4-13 Analog Output A

Option: Function:

Selects which information is reported via analog

output A.

Current (%

FLC)*

Motor

temp (%)

Motor kW

(%)

Motor kVA

(%)

Motor pf Motor power factor, measured by the soft starter.

Current as a percentage of motor full load current.

Motor temperature as a percentage of the thermal

capacity of the motor.

Measured motor kW, as a percentage of maximum

kW.

Measured motor kilovolt amperes, as a percentage

of maximum kVA.

Measure motor kW: √3 x average current

•

x mains reference voltage x measure

power factor.

Maximum motor kW: √3 x motor FLC x

•

mains reference voltage. Power factor is

assumed to be 1.

Measure motor kVA: √3 x average current

•

x main reference voltage.

Parameter Descriptions Operating Guide

4-13 Analog Output A

Option: Function:

Maximum motor kVA: √3 x motor FLC x

•

mains reference voltage.

4-14 Analog A Scale

Option: Function:

Selects the range of the output.

0–20 mA

4–20 mA*

4-15 Analog A Maximum Adjustment

Range: Function:

100%* [0–600%] Calibrates the upper limit of the analog

output to match the signal measured on an

external current measuring device.

4-16 Analog A Minimum Adjustment

Range: Function:

0%* [0–600%] Calibrates the lower limit of the analog output

to match the signal measured on an external

current measuring device.

8.5 Start/Stop Timers

5-4 Auto-Stop Time

Range: Function:

1 min* [00:01–

24:00

(hrs:min)]

Sets the time for the soft starter to

autostop in 24-hour clock format.

NOTICE

Do not use this function with remote 2-wire control. The soft starter still accepts start and stop commands from the remote inputs or serial communication network. To disable local or remote control, use parameter 3-1 Local/Remote. If autostart is enabled and the user is in the menu system, autostart becomes active if the menu times out (if no LCP activity is detected for 5 minutes).

8.6 Auto-reset

The soft starter can be programmed to reset certain trips automatically, which can help minimize operating downtime. Trips are divided into 3 categories for autoreset, depending on the risk to the soft starter:

8 8

CAUTION

UNINTENDED START

The autostart timer overrides any other form of control. The motor may start without warning.

5-1 Auto-Start Type

Option: Function:

Selects whether the soft starter autostarts after a

specied delay or at a specic time of day.

O* The soft starter does not autostart.

Timer The soft starter does autostart after a delay from the

next stop, as specied in parameter 5-2 Auto-start Time.

Clock The soft starter autostarts at the time programmed in

parameter 5-2 Auto-start Time.

5-2 Auto-Start Time

Range: Function:

1 min* [00:01–24:00

(hrs:min)]

5-3 Auto-Stop Type

Option: Function:

Selects whether the soft starter autostops after a

specied delay or at a specic time of day.

O* The soft starter does not autostop.

Time The soft starter autostops after a delay from the next

start, as specied in parameter 5-4 Auto-stop Time.

Clock The soft starter autostops at the time programmed in

parameter 5-4 Auto-stop Time.

Sets the time for the soft starter to

autostart in 24-hour clock format.

Group

Current imbalance

Phase loss

Power loss

Frequency

Undercurrent

Instant overcurrent

Input A trip

Motor overload

Motor thermistor

Heat overtemperature

Table 8.1 Trip Categories for Auto-reset

Other trips cannot be automatically reset.

This function is ideal for remote installations using 2-wire control in auto-on mode. If the 2-wire start signal is present after an auto-reset, the soft starter restarts.

6-1 Auto-Reset Action

Option: Function:

Selects which trips can be auto-reset.

Do not Auto-Reset*

Reset group A

Reset group A & B

Reset group A, B & C

Parameter Descriptions

VLT® Soft Starter MCD 500

6-2 Maximum Resets

Range: Function:

1* [1–5] Sets how many times the soft starter auto-resets if it

continues to trip. The reset counter increases by 1

each time the soft starter auto-resets and decreases

by 1 after each successful start/stop cycle.

NOTICE

7-5 Initial Current-2

Range: Function:

350%* [100–

600%

FLC]

Sets the initial start current level for current

ramp starting, as a percentage of motor full

load current. Set so that the motor begins to

accelerate immediately after a start is initiated.

If current ramp starting is not required, set the

initial current equal to the current limit.

If the starter is manually reset, the reset counter returns to 0.

7-6 Start Ramp Time-2

Range: Function:

8.6.1 Auto-reset Delay

The soft starter can be congured to wait before autoresetting a trip. Separate delays can be set for trips in groups A and B, or in group C.

6-3 Reset Delay Groups A & B

Range: Function:

5 s* [00:05–15:00 (min:s)] Sets the delay before resetting group

A and group B trips.

6-4 Reset Delay Group C

Range: Function:

5 minutes* [5–60 (minutes)] Sets the delay before resetting

group C trips.

10 s* [1–180 s] Sets the total start time for an adaptive control

start or the ramp time for current ramp

starting (from the initial current to the current

limit).

7-7 Kick-start Level-2

Range: Function:

500%* [100–700% FLC] Sets the level of the kick-start current.

7-8 Kick-start Time-2

Range: Function:

0000 ms* [0–2000 ms] Sets the kick-start duration. A setting of

0 disables kick-start.

7-9 Excess Start Time-2

Range: Function:

8.7 Secondary Motor Set

See parameters 1-1 to 1-16 for details.

7-1 Motor FLC-2

Range: Function:

[Motor dependent] Sets the secondary motor full load

current.

7-2 Locked Rotor Time-2

Range: Function:

10 s* [0:01–2:00

(min:s)]

7-3 Start Mode-2

Option: Function:

Constant current*

Adaptive control

Sets the maximum length of the time the

motor can run at locked rotor current from

cold before reaching its maximum

temperature. Set according to the motor

datasheet.

If this information is not available, set the

value to <20 s.

Selects the soft start mode.

20 s* [0:00–

4:00

(min:s)]

7-10 Stop Mode-2

Option: Function:

Coast to stop*

TVR soft stop

Adaptive control

Brake

7-11 Stop Time-2

Range: Function:

0 s* [0:00–4:00 (min:s)] Sets the stop time.

Excess start time is the maximum time the soft

starter attempts to start the motor. If the

motor does not reach full speed within the

programmed limit, the soft starter trips. Set for

a period slightly longer than required for a

normal healthy start. A setting of 0 disables

excess start time protection.

Set as required.

Selects the stop mode.

7-4 Current Limit-2

Range: Function:

350%* [100–600%

FLC]

Sets the current limit for constant current

and current ramp soft starting, as a

percentage of motor full load current.

Parameter Descriptions Operating Guide

7-12 Adaptive Control Gain-2

Range: Function:

75%* [1–200%] Adjusts the performance of adaptive control.

The setting aects both starting and stopping

control.

NOTICE

Leave the gain setting at the default level unless adaptive control performance is not satisfactory. If the motor accelerates or decelerates quickly at the end of a start or stop, increase the gain setting by 5–10%. If the motor speed uctuates during starting or stopping, decrease the gain setting slightly.

7-13 Adaptive Start Prole-2

Option: Function:

Selects which prole the soft starter

uses for an adaptive control soft start.

Early acceleration

Constant acceleration*

Late acceleration

7-14 Adaptive Stop Prole-2

Option: Function:

Selects which prole the soft starter

uses for an adaptive control soft stop.

Early deceleration

Constant deceleration*

Late acceleration

7-15 Brake Torque-2

Range: Function:

20%* [20–100%] Sets the amount of brake torque the soft

starter uses to slow the motor.

7-16 Brake Time-2

Range: Function:

1 s* [1–30 s]

8.8 Display

8-1 Language

Option: Function:

English* Chinese (中丈)

Spanish (Español)

German (Deutsch)

Portuguese (Português)

NOTICE

This parameter is used with parameter 7-11 Stop Time-2.

Sets the duration for DC injection during a

braking stop.

Selects in which language the LCP

shows messages and feedback.

8-1 Language

Option: Function:

French (Français)

Italian (Italiano) Russian (Русский)

8.8.1 User-programmable Screen

Selects which 4 items to show on the programmable monitoring screen.

8-2 User Screen - Top Left

Option: Function:

Selects the item shown in the top left part of

the screen.

Blank Shows no data in the selected area, allowing

long messages to be shown without

overlapping.

Starter state The operating state of the soft starter (starting,

running, stopping, or tripped). Only available

for Top L and Btm L.

Motor current The average current measured on 3 phases.

Motor pf* The motor power factor measured by the soft

starter.

Mains

frequency

Motor kW The motor running power in kW.

Motor hp The motor running power in horse power.

Motor temp The motor temperature, calculated by the

kWh The number of kWh the motor has run via the

Hours run The number of hours the motor has run via

8-3 User Screen - Top Right

Option: Function:

Blank* Shows no data in the selected area, allowing

Starter state The operating state of the soft starter (starting,

Motor current The average current measured on 3 phases.

Motor pf The motor power factor measured by the soft

Mains

frequency

Motor kW The motor running power in kW.

Motor hp The motor running power in horse power.

Motor temp The motor temperature, calculated by the

The average frequency measured on 3 phases.

thermal model.

soft starter.

the soft starter.

Selects the item shown in the top right part of

the screen.

long messages to be shown without

overlapping.

running, stopping, or tripped). Only available

for Top L and Btm L.

starter.

The average frequency measured on 3 phases.

thermal model.

8 8

Parameter Descriptions

VLT® Soft Starter MCD 500

8-3 User Screen - Top Right

8.8.2 Performance Graphs

Option: Function:

kWh The number of kWh the motor has run via the

soft starter.

Hours run The number of hours the motor has run via

the soft starter.

The loggings menu allows the viewing of performance information in real-time graphs.

The newest information is shown at the right side of the screen. The graph can be paused to analyze data by

8-4 User Screen - Bottom Left

Option: Function:

Selects the item shown in the bottom left part

of the screen.

Blank Shows no data in the selected area, allowing

long messages to be shown without

overlapping.

Starter state The operating state of the soft starter (starting,

running, stopping, or tripped). Only available

for Top L and Btm L.

Motor current The average current measured on 3 phases.

Motor pf The motor power factor, measured by the soft

starter.

Mains

frequency

Motor kW The motor running power in kW.

Motor hp The motor running power in horse power.

Motor temp The motor temperature, calculated by the

kWh The number of kWh the motor has run via the

Hours run* The number of hours the motor has run via

The average frequency measured on 3 phases.

thermal model.

soft starter.

the soft starter.

8-5 User Screen - Bottom Right

Option: Function:

Selects the item shown in the bottom right

part of the screen.

Blank* Shows no data in the selected area, allowing

long messages to be shown without

overlapping.

Starter state The operating state of the soft starter (starting,

running, stopping, or tripped). Only available

for Top L and Btm L.

Motor current The average current measured on 3 phases.

Motor pf The motor power factor measured by the soft

starter.

Mains

frequency

Motor kW The motor running power in kW.

Motor hp The motor running power in horse power.

Motor temp The motor temperature, calculated by the

kWh The number of kWh the motor has run via the

Hours run The number of hours the motor has run via

The average frequency measured on 3 phases.

thermal model.

soft starter.

the soft starter.

pressing and holding [OK]. To restart the graph, press and hold [OK].

8-6 Graph Timebase

Option: Function:

Sets the graph time scale. The graph progressively

replaces the old data with new data.

10 s*

30 s

1 minute

5 minutes

10 minutes

30 minutes

1 hour

8-7 Graph Maximum Adjustment

Range: Function:

400%* [0–600%] Adjusts the upper limit of the performance

graph.

8-8 Graph Minimum Adjustment

Range: Function:

0%* [0–600%] Adjusts the lower limit of the performance

graph.

8-9 Mains Reference Voltage

Range: Function:

400 V* [100–

690 V]

Sets the nominal voltage for the monitoring

functions of the LCP. The nominal voltage is

used to calculate motor kW and kilovolt

amperes (kVA), but does not aect the motor

control protection of the soft starter.

Enter the measured mains voltage.

8.9 Restricted Parameters

15-1 Access Code

Range: Function:

0000* [0000–

9999]

Sets the access code to enter the simulation

tools and counter resets or the restricted

section of the programming menu (parameter

group 15 Restricted Parameters and higher).

Press [Back] and [OK] to select which digit to

alter, and use [▲] and [▼] to change the value.

NOTICE

If the access code is lost, contact the local Danfoss supplier for master access code that allows the reprogramming of a new access code.

Parameter Descriptions Operating Guide

15-2 Adjustment Lock

Option: Function:

Selects whether the LCP allows parameters to be

changed via the programming menu.

Read &

write*

Read only Prevents users altering parameter values in the

No access Prevents users adjusting parameters in the

Allows altering parameter values in the

programming menu.

programming menu. Parameter values can still be

viewed.

programming menu unless an access code is

entered.

NOTICE

Changes to the adjustment lock setting take eect only after the programming menu has been closed.

15-3 Emergency Run

Option: Function:

CAUTION

EQUIPMENT DAMAGE

Continued use of emergency run is not recommended. Emergency run may compromise the soft starter life as all protections and trips are disabled. Using the soft starter in Emergency run mode voids the product warranty.

Selects whether the soft starter allows emergency run

operation. In emergency run, the soft starter starts (if

not already running) and continues to operate until

emergency run ends, ignoring stop commands and

trips.

Emergency run is controlled using a programmable

input.

When emergency run is activated in internally bypassed

models which are not running, the soft starter attempts

a normal start while ignoring all trips. If a normal start

is not possible, a DOL start via the internal bypass

contactors is attempted. For non-bypassed models, an

external emergency run bypass contactor may be used.

15-5 Main Contactor Time

Range: Function:

400 ms* [100–

2000 ms]

Sets the delay period between the soft

starter switching the main contactor

output (terminals 13 and 14) and

beginning the prestart checks (before

start) or entering the not ready state

(after a stop). Set according to the speci-

cations of the main contactor used.

15-6 Bypass Contactor Time

Range: Function:

150 ms* [100–

2000 ms]

Sets the soft starter to match the bypass

contactor closing/opening time. Set

according to the specications of the

bypass contactor used. If the time is too

short, the soft starter trips.

15-7 Motor Connection

Option: Function:

The soft starter automatically detects the format

of the connection to the motor.

Auto-Detect*

In-line

Inside Delta

15-8 Jog Torque

Range: Function:

50%* [20–100%]

NOTICE

Setting this parameter above 50% may cause increased shaft vibration.

Sets the torque level for jog operation. See

chapter 5.5 Jog Operation for more details.

8 8

15-4 Current Calibration

Range: Function:

100%* [85–

115%]

Motor current calibration calibrates the soft

starter's current monitoring circuits to match an

external current metering device.

Use the following formula to determine the

necessary adjustment:

Calibration( % ) = 

e . g . 102 %  = 

CurrentshownonMCD500display

Currentmeasuredbyexternaldevice

66A 65A

NOTICE

This adjustment aects all current-based functions.

Parameter Descriptions

VLT® Soft Starter MCD 500

8.10 Protection Action

16-1 to 16-13 Protection Action

Option: Function:

Selects the soft starter response to each

protection.

Parameter 16-1 Motor Overload.

•

Parameter 16-2 Current Imbalance.

•

Parameter 16-3 Undercurrent.

•

Parameter 16-4 Inst Overcurrent.

•

Parameter 16-5 Frequency.

•

Parameter 16-6 Heat sink Overtemp.

•

Parameter 16-7 Excess Start Time.

•

Parameter 16-8 Input A Trip.

•

Parameter 16-9 Motor Thermistor.

•

Parameter 16-10 Starter/Comms.

•

Parameter 16-11 Network/Comms.

•

Trip

starter*

Warn and

log

Log only

Parameter 16-12 Battery/Clock.

•

Parameter 16-13 Low Control Volts.

•

8.11 Factory Parameters

These parameters are restricted for factory use and are not available to the user.

Tools Operating Guide

9 Tools

To access Tools:

1. Open the Main Menu.

2. Scroll to Tools.

3. Press [OK].

NOTICE

The security access code also protects simulation tools and counter-resets. The default access code is 0000.

9.1 Set Date and Time

To set the date and time:

1. Open the Tools Menu.

2. Scroll to Set Date & Time.

3. Press [OK] to enter edit mode.

4. Press [OK] to select which part of the date or time to edit.

Use [▲] and [▼] to change the value.

To save changes, press [OK] repeatedly. The soft starter conrms the changes. To cancel changes, press [Back] repeatedly.

Load/Save Settings

9.2

The VLT® Soft Starter MCD 500 includes options to:

Load defaults: Load the soft starter parameters

•

with default values.

Load User Set 1: Reload previously saved

•

parameter settings from an internal le.

Save User Set 1: Save the current parameter

•

settings to an internal le.

In addition to the factory default values le, the soft starter can store a user-dened parameter le. This le contains default values until a user le is saved.

Load Defaults

Yes

Table 9.2 Load Defaults Menu

When the action has been completed, the screen briey shows a conrmation message and then returns to the status screens.

9.3 Reset Thermal Model

NOTICE

The security access code protects the reset thermal model.

The advanced thermal modeling software in the soft starter constantly monitors the motor performance. This monitoring allows the soft starter to calculate the motor temperature and ability to start successfully at any time.

If necessary, reset the thermal model.

NOTICE

Resetting the motor thermal model may compromise motor life and should only be done in the case of emergency.

1. Open Tools.

2. Scroll to Reset Thermal Model and press [OK].

3. At the conrmation prompt, press [OK] to conrm, then enter the access code, or press [Back] to cancel the action.

4. Select Reset or Do Not Reset, then press [OK]. When the thermal model has been reset, the soft starter returns to the previous screen.

9 9

To load or save parameter settings:

1. Open the Tools Menu.

Use [▼] to select the required function, then press [OK].

3. At the

4. Press [OK] to load/save the selection or exit the

Tools

Table 9.1 Tools Menu

conrmation prompt, select Yes to conrm

or No to cancel.

screen.

Load Defaults

Load User Set 1

Save User Set 1

Table 9.3 Accept to Reset the Thermal Model

Table 9.4 Reset Thermal Model Menu

Reset Thermal Model

M1 X%

OK to Reset

Reset Thermal Model

Do Not Reset

Reset

Tools

VLT® Soft Starter MCD 500

9.4 Protection Simulation

NOTICE

Protection simulation is protected by the security access code.

To test the operation and control circuits of the soft starter without connecting it to mains voltage, use the software simulation functions.

The protection simulation feature enables the soft starter to conrm that it responds correctly and reports the situation on the display and across the communication network.

To use the protection simulation:

1. Open the Main Menu.

2. Scroll to Protection Sim and press [OK].

To select the protection to simulate, press [▲] and

[▼].

4. To simulate the selected protection, press [OK].

5. The screen is shown while [OK] is pressed. The

MS1 000.0A 0000.0kW

Tripped

Selected Protection

Table 9.5 Protection Simulation Menu

soft starter response depends on the protection action setting (parameter group 16 Protection Actions).

6. To return to the simulation list, press [Back].

To select another simulation, press [▲] or [▼], or press [Back] to return to the Main Menu.

NOTICE

To test operation of the ags (motor temperature and low/high current), set an output relay to the appropriate function and monitor the relay behavior.

To use the output signal simulation:

1. Open the Main Menu.

2. Scroll to Output Signal Sim and press [OK], then enter the access code.

To select a simulation, press [▲] and [▼], then press [OK].

To turn the signal on and o, press [▲] and [▼]. To conrm correct operation, monitor the state of the output.

5. To return to the simulation list, press [Back].

Prog Relay A

O

Table 9.6 Output Signal Simulation Menu

Digital I/O State

9.6

This screen shows the status of the digital I/O in order.

The top line of the screen shows:

Start.

•

Stop.

•

Reset.

•

Programmable input.

•

The bottom line of the screen shows programmable outputs A, B, and C.

NOTICE

If the protection trips the soft starter, reset before simulating another protection. If the protection action is set to Warn or Log, no reset is required. If the protection is set to Warn & Log, the warning message can be viewed only while [OK] is pressed. If the protection is set to Log only, nothing appears on the screen, but an entry appears in the log.

Inputs: 0100

Outputs: 100

Table 9.7 Digital I/O Status Screen

Temp Sensors State

9.7

Digital I/O State

9.5 Output Signal Simulation

NOTICE

The security access code protects the output signal simulation.

The LCP allows simulation of output signaling to conrm that the output relays are operating correctly.

This screen shows the state of the motor thermistor. The screenshot shows the thermistor state as O (open).

Temp Sensors State

Thermistor: O

S = shrt H=hot C=cld O=opn

Table 9.8 Motor Thermistor Status Screen

Tools Operating Guide

9.8 Alarm Log

The [Alarm Log] key opens the alarm logs, which contain:

Trip log.

•

Event log.

•

Counters which store information on the soft

•

starter operating history.

9.8.1 Trip Log

The trip log stores details of the 8 most recent trips, including the date and time the trip happened. Trip 1 is the most recent and trip 8 is the oldest stored trip.

To open the trip log:

1. Press [Alarm Log].

2. Scroll to Trip Log and press [OK].

To select a trip to view, press [▲] and [▼], then press [OK] to show details.

To close the log and return to the main display, press [Back].

The resettable counters (hours run, starts, and motor kWh) can only be reset if the correct access code is entered.

To view the counters:

1. Press [Alarm Log].

2. Scroll to Counters and press [OK].

To scroll through the counters, press [▲] and [▼]. Press [OK] to view details.

4. To reset a counter, press [OK], then enter the access code. Select Reset, then press [OK] to

conrm.

To close the counter and return to the alarm logs, press [Back].

9.8.2 Event Log

The event log stores time-stamped details of the 99 most recent events (actions, warnings, and trips), including the date and time of the event. Event 1 is the most recent and event 99 is the oldest stored event.

To open the event log:

1. Press [Alarm Log].

2. Scroll to Event Log and press [OK].

To select an event to view, press [▲] and [▼], then press [OK] to show details.

To close the log and return to the main display, press [Back].

9.8.3 Counters

NOTICE

The security access code protects the counters function.

The performance counters store statistics on the soft starter operation:

Hours run (lifetime and time since the last reset

•

of the counter).

Number of starts (lifetime and time since the last

•

reset of the counter).

Motor kWh (lifetime and time since the last reset

•

of the counter).

Number of times the thermal model has been

•

reset.

9 9

Troubleshooting

10 Troubleshooting

VLT® Soft Starter MCD 500

When a protection condition is detected, the VLT® Soft Starter MCD 500 writes this condition to the event log and may also trip or issue a warning. The soft starter response depends on the protection action settings (parameter group 16 Protection Actions).

Some protection responses cannot be adjusted. Usually, external events (for example phase loss) or a fault within the soft starter cause these trips. These trips do not have associated parameters and cannot be set to Warn or Log.

If the soft starter trips:

1. Identify and clear the condition that triggered the trip.

2. Reset the soft starter.

3. Restart the soft starter.

To reset the soft starter, press [Reset] or activate the Reset remote input.

If the soft starter has issued a warning, it resets itself when the cause of the warning has been resolved.

10.1 Trip Messages

Table 10.1 lists the protection mechanisms in the soft starter and the probable cause of the trip. Some of these protection mechanisms can be adjusted using parameter group 2 Protection and parameter group 16 Protection Action. Other settings are built-in system protections and cannot be set or adjusted.

Display Possible cause/suggested solution

Awaiting data The LCP does not receive data from the control PCB. Check the cable connection and the tting of

the display on the soft starter.

Battery/clock A verication error has occurred on the real-time clock, or the back-up battery voltage is low. If the

1010

Controller Name selected for a programmable input. Refer to Input A trip.

Current imbalance Problems with the motor, the environment, or the installation can cause current imbalance, such as:

Current read err lx Where X is 1, 2, or 3.

battery is low and the power is o, date/time settings are lost. Reprogram the date and time.

Related parameter:

Parameter 16-12 Battery Clock.

•

An imbalance in the incoming mains voltage.

•

A problem with the motor windings.

•

A light load on the motor.

•

A phase loss on mains terminals L1, L2, or L3 during run mode.

•

An SCR that has failed open circuit. A failed SCR can only be diagnosed accurately by replacing the

SCR and checking the soft starter performance.

Related parameters:

Parameter 2-2 Current Imbalance.

•

Parameter 2-3 Current Imbalance Delay.

•

Parameter 16-2 Current Imbalance.

•

Internal fault (PCB fault). The output from the current transformer circuit is not close enough to 0

when the SCRs are turned o. Contact the local Danfoss supplier for advice.

This trip is not adjustable.

Related parameters: None.

Troubleshooting Operating Guide

Display Possible cause/suggested solution

Excess start time Excess start time trip can occur under the following conditions:

Parameter 1-1 Motor FLC is not appropriate for the motor.

•

Parameter 1-4 Current Limit has been set too low.

•

Parameter 1-6 Start Ramp Time has been set higher than the setting in parameter 1-9 Excess Start

•

Time Setting.

Parameter 1-6 Start Ramp Time is set too short for a high inertia load when using adaptive

•

control.

Related parameters:

Parameter 1-1 Motor FLC.

•

Parameter 1-4 Current Limit.

•

Parameter 1-6 Start Ramp Time.

•

Parameter 1-9 Excess Start Time.

•

Parameter 7-1 Motor FLC-2.

•

Parameter 7-4 Current Limit-2.

•

Parameter 7-6 Start Ramp-2.

•

Parameter 7-9 Excess Strt Time-2.

•

Parameter 16-7 Excess Start Time.

•

Firing fail px Where X is phase 1, 2, or 3.

The SCR did not re as expected. Check for faulty SCRs and internal wiring faults.

This trip is not adjustable.

Related parameters: None.

FLC too high The soft starter can support higher motor full load current values when connected to the motor

using inside delta conguration rather than in-line connection. If the soft starter is connected in-

line, but the programmed setting for parameter 1-1 Motor FLC exceeds the in-line maximum, the

soft starter trips at start (see chapter 4.5 Minimum and Maximum Current Settings).

If the soft starter is connected to the motor using inside delta conguration, check that the soft

starter detects the connection correctly. Contact the local Danfoss supplier for advice.

Related parameters:

Parameter 1-1 Motor FLC.

•

Parameter 7-1 Motor FLC-2.

•

Frequency The mains frequency is outside of the specied range.

Check for other equipment in the area that could be aecting the mains supply, particularly

frequency converters and switch mode power supplies (SMPS).

If the soft starter is connected to a generator-set supply, the generator may be too small or could

have a speed control problem.

Related parameters:

Parameter 2-8 Frequency Check.

•

Parameter 2-9 Frequency Variation.

•

Parameter 2-10 Frequency Delay.

•

Parameter 16-5 Frequency.

•

Heat sink overtemp Check that cooling fans are operating. If mounted in an enclosure, check if ventilation is adequate.

Fans operate during start, run, and for 10 minutes after the soft starter exits the stop state.

NOTICE

Models MCD5-0021B ~ MCD4-0053B and MCD5-0141B do not have a cooling fan. Models with fans operate the cooling fans from a start until 10 minutes after a stop.

10 10

Related parameter:

Parameter 16-6 Heat sink Overtemp.

•

Troubleshooting

Display Possible cause/suggested solution

High level Name selected for a programmable input. Refer to Input A trip.

High pressure Name selected for a programmable input. Refer to Input A trip.

Input A trip The programmable input is set to a trip function and has activated. Resolve the trigger condition.

Related parameters:

•

Instantaneous overcurrent There has been a sharp rise in motor current, probably caused by a locked rotor condition (shear

pin) while running. Check for a jammed load.

Related parameters:

•

Internal fault X The soft starter has tripped on an internal fault. Contact the local Danfoss supplier with the fault

code (X).

Related parameters: None.

L1 phase loss

L2 phase loss

L3 phase loss

1010

During prestart, check that the soft starter has detected a phase loss as indicated.

In run state, the soft starter has detected that the current on the aected phase has dropped

below 3.3% of the programmed motor FLC for more than 1 s. This current drop indicates that

either the incoming phase or connection to the motor has been lost.

For the soft starter and the motor, check:

•

A failed SCR can also cause phase loss, particularly an SCR that has failed open circuit. A failed SCR

can only be diagnosed accurately by replacing the SCR and checking the soft starter performance.

Related parameters: None.

L1-T1 shorted

L2-T2 shorted

L3-T3 shorted

Low control volts The soft starter has detected a drop in the control voltage.

During prestart checks, the soft starter has detected a short-circuited SCR or a short circuit within

the bypass contactor as indicated.

Related parameters: None.

•

If the external control supply is stable:

•

This protection is not active in ready state.

Related parameter:

•

Low level Name selected for a programmable input. Refer to Input A trip.

Low pressure Name selected for a programmable input. Refer to Input A trip.

VLT® Soft Starter MCD 500

Parameter 3-3 Input A Function.

Parameter 3-4 Input A Name.

Parameter 3-5 Input A Trip.

Parameter 3-6 Input A Trip Delay.

Parameter 3-7 Input A Initial Delay.

Parameter 16-8 Input A Trip.

Parameter 2-6 Instantaneous Overcurrent.

Parameter 2-7 Instantaneous Overcurrent Delay.

Parameter 16-4 Inst Overcurrent.

The supply connections.

The input connections.

The output connections.

Check the external control supply (terminals A4, A5, A6) and reset the soft starter.

Check if the 24 V supply on the main control PCB is faulty; or

Check if the bypass driver PCB is faulty (internally bypassed models only).

Parameter 16-13 Low Control Volts.

Troubleshooting Operating Guide

Display Possible cause/suggested solution

Motor overload/

Motor 2 overload

Motor connection tx Where X is 1, 2, or 3.

Motor thermistor The motor thermistor input has been enabled and:

The motor has reached its maximum thermal capacity.

The following can cause overload:

The soft starter protection settings do not match the motor thermal capacity.

•

Excessive starts per hour.

•

Excessive throughput.

•

Damage to the motor windings.

•

Resolve the cause of the overload and allow the motor to cool.

Related parameters:

Parameter 1-1 Motor FLC.

•

Parameter 1-2 Locked Rotor Time.

•

Parameter 1-3 Start Mode.

•

Parameter 1-4 Current Limit.

•

Parameter 7-1 Motor FLC-2.

•

Parameter 7-2 Locked Rotor Time-2.

•

Parameter 7-3 Start Mode-2.

•

Parameter 7-4 Current Limit-2.

•

Parameter 16-1 Motor Overload.

•

The motor is not connected correctly to the soft starter for in-line or inside delta use.

Check individual motor connections to the soft starter for power circuit continuity.

•

Check connections at the motor terminal box.

•

This trip is not adjustable.

Related parameter:

Parameter 15-7 Motor Connection.

•

The resistance at the thermistor input has exceeded 3.6 kΩ for more than 1 s.

•

The motor winding has overheated. Identify the cause of the overheating and allow the motor

•

to cool before restarting.

The motor thermistor input has been opened.

•

10 10

NOTICE

If a valid motor thermistor is no longer used, t a 1.2 kΩ resistor across terminals 05 and 06.

Related parameter:

Parameter 16-9 Motor Thermistor.

•

Network communication (between

module and network)

No ow Name selected for a programmable input. Refer to Input A trip.

Not ready Check if the soft starter disable function is active. If parameter 3-3 Input A Function is set to Starter

Parameter out of range

The network master has sent a trip command to the soft starter, or there could be a network

communication problem.

Check the network for causes of communication inactivity.

Related parameter:

Parameter 16-11 Network/Comms.

•

disable and there is an open circuit on terminals 11 and 16, the soft starter does not start.

A parameter value is outside the valid range.

•

The soft starter loads the default value for all aected parameters. To go to the rst invalid

parameter and adjust the setting, press [Main Menu].

Related parameters: None.

Troubleshooting

Display Possible cause/suggested solution

Phase sequence The phase sequence on the soft starter mains terminals (L1, L2, L3) is not valid.

Check the phase sequence on L1, L2, and L3, and ensure that the setting in parameter 2-1 Phase

Sequence is suitable for the installation.

Related parameter:

•

PLC Name selected for a programmable input. Refer to Input A trip.

Power loss The soft starter is not receiving mains supply on 1 or more phases when a start command is given.

Check that the main contactor closes when a start command is given and remains closed until the

end of a soft stop.

If testing the soft starter with a small motor, it must draw at least 2% of its minimum FLC setting

on each phase.

Related parameters: None.

Pump fault Name selected for a programmable input. Refer to Input A trip.

Starter/communication (between

module and soft starter)

•

Related parameter:

•

Starter disable Name selected for a programmable input. Refer to Input A trip.

Thermistor cct (thermistor circuit) The thermistor input has been enabled and:

•

1010

Time - overcurrent The soft starter is internally bypassed and has drawn high current during running. (The 10 A

Undercurrent The motor has experienced a sharp drop in current, caused by loss of load. Causes can include

Check that a PT100 (RTD) is not connected to terminals 05 and 06.

Related parameters: None.

protection curve trip has been reached, or the motor current has risen to 600% of the motor FLC

setting.)

Related parameters: None.

broken components (shafts, belts, or couplings) or a pump running dry.

Related parameters:

•

Unsupported option (function not

available in inside delta)

Vibration Name selected for a programmable input. Refer to Input A trip.

VZC fails px Where X is 1, 2, or 3.

The selected function is not available (for example jog is not supported in inside delta congu-

ration).

Related parameters: None.

Internal fault (PCB fault). Contact the local Danfoss supplier for advice.

This trip is not adjustable.

Related parameters: None.

VLT® Soft Starter MCD 500

Parameter 2-1 Phase Sequence.

There is a problem with the connection between the soft starter and the optional communi-

cations module. Remove and reinstall the module. If the problem persists, contact the local

distributor.

There is an internal communication error within the soft starter. Contact the local distributor.

Parameter 16-10 Starter/Comms.

The resistance at the input has dropped below 20 Ω (the cold resistance of most thermistors is

above this value) or

A short circuit has occurred. Check and resolve this condition.

Parameter 2-4 Undercurrent.

Parameter 2-5 Undercurrent Delay.

Parameter 16-3 Undercurrent.

Table 10.1 Trip Messages

Troubleshooting Operating Guide

10.2 General Faults

Table 10.2 describes situations where the soft starter does not operate as expected but neither trips nor issues a warning.

Symptom Probable cause

The soft starter is not ready. Check input A (11, 16). Check if the soft starter is disabled via a programmable input.

If parameter 3-3 Input A Function is set to Starter disable, and there is an open circuit

on the corresponding input, the soft starter does not start.

The soft starter does not respond to the [Hand On]

and [Reset] keys.

The soft starter does not respond to commands

from the control inputs.

Check if the soft starter is in auto-on mode. When the soft starter is in auto-on

mode, the hand-on LED on the soft starter is o. Press [Auto On] once to change to

local control.

The soft starter is waiting for the restart delay to elapse. Parameter 2-11 Restart

•

delay controls the length of the restart delay.

The motor may be too hot to allow a start. If parameter 2-12 Motor temperature

•

check is set to Check, the soft starter only allows a start when it calculates that

the motor has sucient thermal capacity to complete the start successfully. Wait

for the motor to cool before attempting another start.

Check if the soft starter is disabled via a programmable input. If parameter 3-3

•

Input A Function is set to Starter disable, and there is an open circuit on terminals

11 and 16, the soft starter does not start. If there is no further need to disable

the soft starter, close the circuit on the input.

The soft starter does not respond to a start

command from either the local or remote controls.

The soft starter does not control the motor

correctly during start.

NOTICE

Parameter 3-1 Local/remote controls when the [Auto On] is enabled.

The soft starter may be waiting for the restart delay to elapse. Parameter 2-11

•

Restart delay controls the length of the restart delay.

The motor may be too hot to allow a start. If parameter 2-12 Motor temperature

•

check is set to Check, the soft starter only allows a start when it calculates that

the motor has sucient thermal capacity to complete the start successfully.

Check if the soft starter is disabled via a programmable input. If parameter 3-3

•

Input A function is set to Starter disable, and there is an open circuit on terminals

11 and 16, the soft starter does not start. If there is no further need to disable

the soft starter, close the circuit on the input.

NOTICE

Parameter 3-1 Local/remote controls when [Auto On] is enabled.

Start performance may be unstable when using a low motor FLC setting

•

(parameter 1-1 Motor FLC). This can aect use on a small test motor with full load

current of 5–50 A.

Install power factor correction (PFC) capacitors on the supply side of the soft

•

starter. To control a dedicated PFC capacitor contactor, connect the contactor to

run relay terminals.

10 10

Troubleshooting

Symptom Probable cause

VLT® Soft Starter MCD 500

Motor does not reach full speed.

If the start current is too low, the motor does not produce enough torque to

•

accelerate to full speed. The soft starter may trip on excess start time.

NOTICE

Make sure that the motor starting parameters are appropriate for the application and that the intended motor starting prole is used. If parameter 3-3 Input A Function is set to Motor Set Select, check that the corresponding input is in the expected state.

Check if the load is jammed. Check the load for severe overloading or a locked

•

rotor situation.

Erratic motor operation.

Erratic and noisy motor operation. If the soft starter is connected to the motor using inside delta conguration, the soft

Soft stop ends too quickly.

1010

Adaptive control, DC brake, and jog functions not

working.

A reset does not occur after an auto-reset when

using a remote 2-wire control.

Remote start/stop command overrides autostart/

stop settings when using remote 2-wire control.

After selecting adaptive control, the motor used an

ordinary start and/or the 2nd start was dierent

from the 1st start.

Non-resettable Thermistor Cct trip, when there is a

link between thermistor inputs 05 and 06, or when

the motor thermistor connected between 05 and

06 is permanently removed.

Parameter settings cannot be stored.

The LCP shows message Awaiting data. The LCP does not receive data from the control PCB. Check the cable connection.

The SCRs in the soft starter require at least 5 A of current to latch. If testing the

•

soft starter on a motor with full load current less than 5 A, the SCRs may not

latch correctly.

starter may not be detecting the connection correctly. Contact the local Danfoss

supplier for advice.

The soft stop settings may not be appropriate for the motor and load. Review the

•

settings of:

- Parameter 1-10 Stop Mode.

- Parameter 1-11 Stop Time.

- Parameter 7-10 Stop Mode-2.

- Parameter 7-11 Stop Time-2.

If the motor is lightly loaded, soft stop has limited eect.

•

These features are only available with in-line installation. If the soft starter is

•

installed inside delta, these features do not operate.

Remove and reapply the remote 2-wire start signal for a restart.

•

Only use autostart/stop in auto-on mode with 3-wire or 4-wire control.

•

The 1st adaptive control start is Current limit. The soft starter then learns from the

•

motor characteristics. Subsequent starts use adaptive control.

The thermistor input is enabled once a link is tted and short-circuit protection

•

has activated.

Remove the link, then load the default parameter set. This disables the thermistor

input and clears the trip. Place a 1.2 kΩ resistor across the thermistor input.

Turn thermistor protection to Log only (parameter 16-9 Motor Thermistor).

Make sure to save the new value by pressing [OK] after adjusting a parameter

•

setting. If pressing [Back], the change is not saved.

Check that the adjustment lock (parameter 15-2 Adjustment Lock) is set to Read/

•

Write. If the adjustment lock is on, settings can be viewed, but not changed.

Knowing the security access code is necessary to change the adjustment lock

setting.

The EEPROM may be faulty on the main control PCB. A faulty EEPROM also trips

•

the soft starter, and the LCP shows the message Par. Out of Range. Contact the

local Danfoss supplier for advice.

Table 10.2 General Fault Messages

Specications Operating Guide

11 Specications

Supply Mains voltage (L1, L2, L3) MCD5-xxxx-T5 200–525 V AC (±10%) MCD5-xxxx-T7 380–690 V AC (±10%) (in-line connection) MCD5-xxxx-T7 380–690 V AC (±10%) (inside delta connection) Control voltage (A4, A5, A6) CV1 (A5, A6) 24 V AC/V DC (±20%) CV2 (A5, A6) 110–120 V AC (+10%/-15%) CV2 (A4, A6) 220–240 V AC (+10%/-15%) Current consumption (maximum) CV1 2.8 A CV2 (110–120 V AC) 1 A CV2 (220–240 V AC) 500 mA Mains frequency 45–66 Hz Rated insulation voltage to ground 690 V AC Rated impulse withstand voltage 4 kV Form designation Bypassed or continuous, semiconductor motor starter form 1

Short-circuit capability (IEC) Coordination with semiconductor fuses Type 2 Coordination with HRC fuses Type 1 MCD5-0021B to MCD5-0215B Prospective current 65 kA MCD5-0245B to MCD5-0961B Prospective current 85 kA MCD5-0245C to MCD5-0927B Prospective current 85 kA MCD5-1200C to MCD5-1600C Prospective current 100 kA

For UL short-circuit current ratings, see Table 4.12.

Electromagnetic capability (compliant with EU Directive 2014/30/EU) EMC emissions IEC 60947-4-2 Class B and Lloyds Marine No 1 Specication EMC immunity IEC 60947-4-2

Inputs Input rating Active 24 V DC, 8 mA approximately Start (15, 16) Normally open Stop (17, 18) Normally closed Reset (25, 18) Normally closed Programmable input (11, 16) Normally open Motor thermistor (05, 06) Trip >3.6 kΩ, reset <1.6 kΩ

Outputs Relay outputs 10 A @ 250 V AC resistive, 5 A @ 250 V AC AC15 pf 0.3 Programmable outputs Relay A (13, 14) Normally open Relay B (21, 22, 24) Changeover Relay C (33, 34) Normally open Analog output (07, 08) 0–20 mA or 4–20 mA (selectable) Maximum load 600 Ω (12 V DC @ 20 mA) Accuracy ±5% 24 V DC output (16, 08) maximum load 200 mA Accuracy ±10%

11 11

Specications

Environmental Protection MCD5-0021B to MCD5-0105B IP20 & NEMA, UL Indoor Type 1 MCD5-0131B to MCD5-1600C IP00, UL Indoor Open Type Operating temperature -10 °C (14 °F) to +60 °C (140 °F), above 40 °C (104 °F) with derating Storage temperature -25 °C (-13 °F) to +60 °C Operating altitude (using MCD PC software) 0–1000 m (0–3281 ft), above 1000 m (3281 ft) with derating Humidity 5–95% relative humidity Pollution degree Pollution degree 3 Vibration IEC 60068-2-6

Heat dissipation During start 4.5 W per ampere During run MCD5-0021B to MCD5-0053B ≤39 W approximately MCD5-0068B to MCD5-0105B ≤51 W approximately MCD5-0131B to MCD5-0215B ≤120 W approximately MCD5-0245B to MCD5-0469B ≤140 W approximately MCD5-0525B to MCD5-0961B ≤357 W approximately MCD5-0245C to MCD5-0927C 4.5 W per ampere approximately MCD5-1200C to MCD5-1600C 4.5 W per ampere approximately

VLT® Soft Starter MCD 500

Certication

C✓ IEC 60947-4-2 UL/C-UL MCD5-0021B to MCD5-0396B, MCD5-0245C to MCD5-1600C MCD5-0469B to MCD5-0961B MCD5-0021B to MCD5-105B MCD5-0131B to MCD5-1600C CE IEC 60947-4-2

1111

CCC GB 14048-6 Marine (MCD5-0021B to MCD5-0961B) Lloyds Marine No 1 Specication RoHS Compliant with EU Directive 2002/95/EC

1) For UL certication extra requirements may apply, depending on the models. For details, see chapter 11.1 UL-compliant Installation.

UL-compliant Installation

11.1

11.1.3 Models MCD5-0245B to

IP20, when tted with optional nger guard kit

UL recognized

UL 508

UL listed

MCD5-0396B

This section details more requirements and conguration

settings for the VLT® Soft Starter MCD 500 to be ULcompliant. See also Table 4.12.

11.1.1 Models MCD5-0021B to MCD5-0105B

Use with nger guard kit, ordering number

•

175G5730.

Use the recommended pressure terminal/

•

connector kit. See Table 11.1 for more information.

There are no additional requirements for these models.

11.1.2 Models MCD5-0131B to MCD5-0215B

Use with nger guard kit, ordering number

•

175G5662.

Use the recommended pressure terminal/

•

connector kit. See Table 11.1 for more information.

11.1.4 Models MCD5-0245C

Use the recommended pressure terminal/

•

connector kit. See Table 11.1 for more information.

Specications Operating Guide

11.1.5 Models MCD5-0360C to MCD5-1600C

Congure the busbars for line/load terminals at

•

opposite ends of the soft starter (that is Top in/ Bottom out, or Top out/Bottom in.

Use the recommended pressure terminal/

•

connector kit. See Table 11.1 for more information.

11.1.6 Models MCD5-0469B to MCD5-0961B

These models are UL recognized components. Separate cable landing busbars may be required within the electrical cabinet when terminating cables sized according to the National Wiring Code (NEC) regulations.

11.1.7 Pressure Terminal/Connector Kits

For models MCD50131B to MCD5-0396B and MCD5-0245C to MCD5-1600C to be UL-compliant, use the recommended pressure terminal/connector as detailed in Table 11.1.

Model FLC (A)

MCD5-0131B 145 1 OPHD 95-16

MCD5-0141B 170 1 OPHD 120-16

MCD5-0195B 200 1 OPHD 150-16

MCD5-0215B 220 1 OPHD 185-16

MCD5-0245B 255 1 OPHD 240-20

MCD5-0331B 350 1 OPHD 400-16

MCD5-0396B 425 2 OPHD 185-16

MCD5-0245C 255 1 OPHD 240-20

MCD5-0360C 360

MCD5-0380C 380

MCD5-0428C 430

MCD5-0595C 620

MCD5-0619C 650

MCD5-0790C 790 4 2 x 600T-2

MCD5-0927C 930 3 2 x 600T-2

MCD5-1200C 1200

MCD5-1410C 1410

MCD5-1600C 1600 5

Number of

wires

2 1 x 600T-2

4 1 x 750T-4

Recommended

lugs ordering

numbers

1 x 750T-4 and

1 x 600T-3

Accessories

11.2

11.2.1 LCP Remote Mounting Kit

The VLT® Soft Starter MCD 500 LCP can be mounted up to 3 m (9.8 ft) away from the soft starter, allowing remote control and monitoring. The remote LCP also allows parameter settings to be copied between soft starters.

175G0096 Control Panel LCP 501.

•

11.2.2 Communication Modules

VLT® Soft Starter MCD 500 supports network communication via easy-to-install communication modules. Each soft starter can support 1 communication module at a time.

Available protocols:

Ethernet (PROFINET, Modbus TCP, EtherNet/IP).

•

PROFIBUS.

•

DeviceNet.

•

Modbus RTU.

•

USB.

•

Ordering numbers for communication modules

175G9000 Modbus module.

•

175G9001 PROFIBUS module.

•

175G9002 DeviceNet module.

•

175G9009 MCD USB module.

•

175G9904 Modbus TCP module.

•

175G9905 PROFINET module.

•

175G9906 EtherNet/IP module.

•

11.2.3 PC Software

WinMaster PC software provides:

Monitoring.

•

Programming.

•

Control of up to 99 soft starters.

•

A Modbus or USB communication module is required for each soft starter to use WinMaster.

11 11

Table 11.1 Pressure Terminal/Connector Kits

1/L1

2/T1

1/L1

2/T1

177RA001.11

Specications

VLT® Soft Starter MCD 500

11.2.4 Finger Guard Kit

Finger guards may be specied for personnel safety. Finger guards t over the soft starter terminals to prevent accidental contact with live terminals. Finger guards provide IP20 protection when correctly installed.

MCD5-0131B to MCD5-0215B: 175G5662.

•

MCD5-0245B to MCD5-0396B: 175G5730.

•

MCD5-0469B to MCD5-0961B: 175G5731.

•

MCD5-245C: 175G5663.

•

MCD5-0360C to MCD5-0927C: 175G5664.

•

MCD5-1200C to MCD5-1600C: 175G5665.

•

NOTICE

To be UL-compliant, the models MCD5-0131B to MCD5-0396B require nger guards.

11.2.5 Surge Protection Kit (Lightning Protection)

As standard, VLT® Soft Starter MCD 500 rated impulse withstand voltage is limited to 4 kV. The surge protection kits protect the system and make the soft starter immune to high-voltage impulses.

6 kV

175G0100 SPD Surge protection kit for G1.

•

1111

12 kV

175G0101 SPD Surge protection kit, G2-G5.

•

175G0102 SPD Surge protection kit for G1.

•

175G0103 SPD Surge protection kit, G1-G5.

•

Illustration 11.1 System with Surge Protection Kit

Busbar Adjustment Procedure... Operating Guide

12 Busbar Adjustment Procedure (MCD5-0360C to MCD5-1600C)

The busbars on non-bypassed models MCD5-0360C to MCD5-1600C can be adjusted for top or bottom input and output as required.

NOTICE

Many electronic components are sensitive to static electricity. Voltages so low that they cannot be felt, seen, or heard can reduce the life, aect performance, or completely destroy sensitive electronic components. When performing service, use proper ESD equipment to prevent possible damage from occurring.

All units are manufactured with input and output busbars at the bottom of the unit as standard. If necessary, the input and/or output busbars can be moved to the top of the unit.

1. Remove all wiring and links from the soft starter before dismantling the unit.

2. Remove the unit cover (4 screws).

3. Remove the LCP front cover, then gently remove the LCP (2 screws).

4. Remove the control card terminal plugs.

5. Gently fold the main plastic away from the soft starter (12 screws).

6. Unplug the LCP loom from CON 1 (see Notice).

7. Label each SCR ring loom with the number of the corresponding terminal on the main control PCB, then unplug the looms.

8. Unplug the thermistor, fan, and current transformer wires from the main control PCB.

9. Remove the plastic tray from the soft starter (4 screws).

NOTICE

Remove the main plastic slowly to avoid damaging the LCP wiring loom (wiring harness), which runs between the main plastic and the backplane PCB.

Illustration 12.1 Removing Front Cover and LCP

10. Unscrew and remove the magnetic bypass plates (models MCD5-0620C to MCD5-1600C only).

11. Remove the current transformer assembly (3 screws).

12. Identify which busbars to remove. Remove the bolts holding these busbars in place, then slide out the busbars through the bottom of the soft starter (4 bolts per busbar).

12 12

Busbar Adjustment Procedure...

VLT® Soft Starter MCD 500

Illustration 12.2 Busbars

13. Slide the busbars in through the top of the soft starter. For input busbars, place the short curved end outside the soft starter. For output busbars, place the unthreaded hole outside the soft starter.

14. Replace the dome washers with the at face towards the busbar.

15. Tighten the bolts holding the busbars in place to

1212

20 Nm (177 in-lb).

16. Place the current transformer assembly over the input busbars and screw the assembly to the body of the soft starter (see Notice).

17. Run all wiring to the side of the soft starter and secure with cable ties.

Illustration 12.3 Busbars with Cable Ties

NOTICE

If moving the input busbars, the current transformers must also be recongured.

1. Label the current transformers L1, L2, and L3 (L1 is leftmost when working from the front of the soft starter). Remove the cable ties and unscrew the current transformers from the bracket.

2. Move the current transformer bracket to the top of the soft starter. Position the current transformers for the correct phases, then screw the current transformers to the bracket. For models MCD5-0360C to MCD5-0930, place the current transformers on an angle. The left-hand legs of each current transformer are on the top row of holes and the right-hand legs are on the bottom tabs.

Appendix Operating Guide

13 Appendix

13.1 Symbols, Abbreviations, and Conventions

°C °F

AC Alternating current

DC Direct current

DOL Direct on-line

EMC Electro magnetic compatibility

FLA Full load amperage

FLC Full load current

FLT Full load torque

IP Ingress protection

LCP Local control panel

LRA Locked rotor amps

MSTC Motor start time constant

PAM Pole amplitude modulated

PCB Printed circuit board

PELV Protective extra low voltage

PFC Power factor correction

SCCR Short-circuit current rating

SELV Safety extra low voltage

TVR Timed voltage ramp

Table 13.1 Symbols and Abbreviations

Conventions

Numbered lists indicate procedures. Bullet lists indicate other information.

Italicized text indicates:

Cross-reference.

•

Link.

•

Parameter name.

•

All dimensions in drawings are in [mm (in)].

Degrees Celsius

Degrees Fahrenheit

13 13

Index

VLT® Soft Starter MCD 500

Index

Abbreviations......................................................................................... 91

AC supply................................................................................................. 18

AC1 rating................................................................................................ 28

AC3 rating................................................................................................ 28

AC-53 rating..................................................................................... 25, 27

Access code............................................ 59, 62, 72, 73, 75, 76, 77, 84

Accessories

Connector kit.............................................................................. 86, 87

Danfoss MCD 500 Operating guide

Specifications and Main Features

Frequently Asked Questions

User Manual