datasheet wtc3 grid module v55x3 - kk wind …...bøgildvej 3 dk-7430 ikast phone fax cvr +45 96 92...

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Datasheet revised: 2015-07-22. Version no. 0.10 HQ KK Wind Solutions A/S Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web [email protected] www.kkwindsolutions.com Datasheet WTC3 GRID MODULE Grid monitoring and generator cut-in control module for wind turbines and parks with voltage transformers.

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Page 1: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Datasheet revised: 2015-07-22. Version no. 0.10

HQ KK Wind Solutions A/S

Bøgildvej 3

DK-7430 Ikast

Phone

Fax

CVR

+45 96 92 43 00

+45 97 21 14 31

25 74 67 16

E-mail

Web

[email protected]

www.kkwindsolutions.com

Datasheet

WTC3 GRID MODULE Grid monitoring and generator cut-in control module for wind turbines

and parks with voltage transformers.

Page 2: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 2 of 28

Contents

1 Introduction ........................................................................................................................ 4

1.1 Part numbers .................................................................................................................. 4

2 Important note ................................................................................................................... 4

3 Features .............................................................................................................................. 5

4 Power supply ...................................................................................................................... 6

4.1 Input ............................................................................................................................... 6

4.2 Transducers supply ......................................................................................................... 6

4.3 Supervision ..................................................................................................................... 6

4.4 Measure +24Vsensor current .......................................................................................... 6

5 Environmental data ............................................................................................................. 7

5.1 Temperature .................................................................................................................. 7

5.2 Temperature supervise monitoring................................................................................. 7

6 Input ................................................................................................................................... 8

6.1 AC current input ............................................................................................................. 8

6.2 AC voltage input ............................................................................................................. 8

6.3 AC input measuring system ............................................................................................ 9

6.4 AC input measurements ................................................................................................. 9

6.4.1 AC voltage measurement ................................................................................. 10

6.4.2 AC current measurement ................................................................................. 10

6.4.3 AC active power measurement ......................................................................... 10

6.4.4 AC reactive power measurement...................................................................... 10

6.4.5 AC apparent power measurement .................................................................... 11

6.4.6 AC power factor measurement ......................................................................... 11

6.4.7 AC frequency measurement ............................................................................. 11

6.5 Temperature input ....................................................................................................... 12

6.6 Encoder input ............................................................................................................... 13

6.7 Digital input .................................................................................................................. 13

7 Grid monitoring ................................................................................................................ 14

7.1 Low voltage monitoring ................................................................................................ 14

7.2 High voltage monitoring ............................................................................................... 14

7.3 Low frequency monitoring ............................................................................................ 14

7.4 High frequency monitoring ........................................................................................... 15

8 Output .............................................................................................................................. 16

8.1 Digital output................................................................................................................ 16

8.2 Thyristor output ........................................................................................................... 17

9 CAN-bus ............................................................................................................................ 18

9.1 CAN setup ..................................................................................................................... 18

9.1.1 CAN address ..................................................................................................... 18

9.1.2 CAN bitrate ...................................................................................................... 18

9.2 Optical interface ........................................................................................................... 18

9.3 Electrical interface ........................................................................................................ 19

9.4 Protocol ........................................................................................................................ 19

Page 3: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 3 of 28

9.5 Parameters ................................................................................................................... 20

10 Soft generator cut-in ......................................................................................................... 21

11 Jumper settings ................................................................................................................. 22

12 Serial communication interface ......................................................................................... 22

13 LED indicators ................................................................................................................... 23

13.1 Module status ............................................................................................................... 23

13.2 Digital Input .................................................................................................................. 24

13.3 Encoder Input ............................................................................................................... 24

13.4 CAN Rx/Tx ..................................................................................................................... 24

13.5 RS232 Rx/Tx .................................................................................................................. 24

14 Standards .......................................................................................................................... 25

14.1 EMC standards .............................................................................................................. 25

14.2 Safety standards ........................................................................................................... 25

14.3 Grid monitoring standards and recommendations ........................................................ 25

15 Module view ..................................................................................................................... 26

16 Mechanical ....................................................................................................................... 27

16.1 Mounting plate ............................................................................................................. 27

Page 4: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 4 of 28

1 Introduction

The WTC3 Grid module is used to measure 3 phase voltage, current, active and reactive power.

The measured values can be continually read out by a CAN communication interface. The CAN

interface are also used to program the module with parameters that adjust how the measurement

is done. The module also contains thyristor control outputs that can be used for soft cut-in of wind

turbines that does not use a power converter. Also the module contains grid monitoring

functionality that can monitor the grid measurements and control a relay output depending on

parameter threshold level.

1.1 Part numbers

This datasheet covers the following part numbers.

V5503 .................................. : Edition with 595 VAC input range.

V5513 .................................. : Edition with 200 VAC input range.

2 Important note

ESD (Electro Static Discharge) sensitive devices on Printed Circuit Board. Take the necessary

precautions when working on ESD sensitive parts.

Page 5: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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3 Features

• 3-phase voltage measurement

• 3-phase current measurement

• Additional 1-phase current measurement

• RMS-calculations: U, I, P, S, Q

• Grid monitoring with OK/fail signalling on digital output

• 3-phase thyristor control output

• 4 x PT100 temperature inputs

• 1 x encoder input

• 4 x digital input

• 4 x digital output, relay output NC/NO

• LED indicators for input / output status

• CAN-bus electrical interface

• CAN-bus optical interface (optional)

• Selectable CAN bitrate

• Selectable CAN address

• Module status read out via LEDs and CAN-interface

• Power supply 32VAC ±30%

• Power supply monitoring

• Self-diagnostics

• Temperature monitoring

• Soft generator cut-in using thyristor outputs

Page 6: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 6 of 28

4 Power supply

4.1 Input

Input voltage ........................ : 32VAC +/- 30%

Input current ........................ : 1.2A max. @ min. input voltage

Input frequency ................... : 47..63Hz

Fuses F1, F2.......................... : 3.15AT 250V (5x20mm)

Connector Pins Function

X15 – AC INPUT

PE Protected earth

0VAC AC 0V reference

32VAC 32VAC supply input

4.2 Transducers supply

+24V is available for transducers connected to the module. This supply is accessed in each

connector.

Output voltage ...................... : +24VDC +/- 10%

Output current ...................... : 0.3A max. total

Short circuit protection ......... : yes

4.3 Supervision

The power supply is supervised to protect the module from malfunctions due to AC power line

drops and errors in the internal power supplies.

If a power fail is detected the module disables all outputs and disconnects from the CAN bus.

The module must be powered down to exit this safety state.

4.4 Measure +24Vsensor current

Current consumption on +24Vsensor supply can be measured on the module via test terminals

between X7/X8. The signal is 1mV per 10mA.

Page 7: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 7 of 28

5 Environmental data

5.1 Temperature

Operating temperature range ....... : -20..70°C

Storage temperature range ........... : -40..70°C

NOTE: The temperature supervision described in section 5.2 will insure that the actual working

temperature on the printed circuit board will newer exceed the allowed operating temperature

range.

5.2 Temperature supervise monitoring

The operating temperature range is supervised internally on the module.

If the ambient temperature exceeds the threshold temperature, the module enters reset mode.

When the ambient temperature enters the operational temperature range, the module exits reset

mode.

The temperature supervision cut out limits are:

High temperature cut off .............. : +67°C +/-3°C

Low temperature cut off ............... : -17°C +/-3°C

Page 8: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 8 of 28

6 Input

6.1 AC current input

Number of inputs .................. : 3 + 1

Input range ........................... : 0..2.1ARMS

Input resistance .................... : 14,75mΩ

Input frequency range ........... : 40..70Hz

Cut off frequency .................. : 800Hz

Galvanic isolation .................. : 4kV (complies with EN60742)

Connector Pins Function

X1 –

AC CURRENT INPUT

1S1 L1 current transformer input 1

1S2 L1 current transformer input 2

2S1 L2 current transformer input 1

2S2 L2 current transformer input 2

3S1 L3 current transformer input 1

3S2 L3 current transformer input 2

PE Protected earth

X2 –

AC CUR.

4S1 L4 current transformer input 1

4S2 L4 current transformer input 2

PE Protected earth

6.2 AC voltage input

Number of inputs : 3

Input range, L-N : 0..595VRMS (V5503) / 0..200VRMS (V5513)

Input resistance, L-N : 39kΩ (V5503) / 12kΩ (V5513)

Input frequency range : 40..70Hz

Cut off frequency : 800Hz

Galvanic isolation : 4kV (complies with EN60742)

Connector Pins Function

X23 –

AC VOLTAGE INPUT

L1 L1 voltage input

L2 L2 voltage input

L3 L3 voltage input

N Null

Page 9: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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6.3 AC input measuring system

Resolution ............................. : 14 bit

Sample rate ........................... : 40 samples per. period (40..70Hz)

Sample timing ....................... :

6.4 AC input measurements

Principle of measurement ..... : True RMS

RMSNoOfSamples

samplenn

n NoOfSamples=

=

=∑

1 2

1

Page 10: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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6.4.1 AC voltage measurement

Measurement range ............. : See section 6.2.

Channels measured ............... : L1, L2, L3

Accuracy ............................... : ±0,5%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 0.1V

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

6.4.2 AC current measurement

Current transformer ratio ..... : 100:1..5000:1 (default 5000:1)

Measurement range ............. : AC current input range x CT ratio [ARMS]

Channels measured ............... : L1, L2, L3, L4, total

Accuracy ............................... : ±0,5%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 0.1A

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

6.4.3 AC active power measurement

Measurement range ............. : AC voltage measurement range x AC current measurement range

[WRMS]

Channels measured ............... : L1, L2, L3, total

Accuracy ............................... : ±1%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 100WRMS

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

6.4.4 AC reactive power measurement

Measurement range ............. : AC voltage measurement range x AC current measurement range

[VArRMS]

Channels measured ............... : L1, L2, L3, total

Accuracy ............................... : ±1%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 100VArRMS

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

Page 11: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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6.4.5 AC apparent power measurement

Measurement range ............. : AC voltage measurement range x AC current measurement range

[VARMS]

Channels measured ............... : L1, L2, L3, total

Accuracy ............................... : ±1%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 100VARMS

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

6.4.6 AC power factor measurement

Measurement range ............. : ±1

Channels measured ............... : L1, L2, L3, total

Accuracy ............................... : ±1%FS

Frequency range ................... : 40..70Hz

Resolution ............................. : 0.001

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

6.4.7 AC frequency measurement

Measurement range ............. : 40..70Hz

Channels measured ............... : L1

Accuracy ............................... : ±0,01Hz

Frequency range ................... : 40..70Hz

Resolution ............................. : 0.001Hz

Interval of RMS calculation ... : once every period

Update interval ..................... : 20..1000ms

Page 12: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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6.5 Temperature input

Number of inputs .................. : 4

Method of measurement ...... : Three-wire with current source, compensating for wire resistance

Current source ...................... : 10mA (multiplexed)

Transducer type .................... : PT100

Measurement range ............. : -45°C..+195°C

Open sensor .......................... : > 195°C

Shorted sensor ...................... : < -45°C

Accuracy ............................... : +/-1°C

Update interval ..................... : 200..1000ms

Connector Pins Function

X3 – TI1

X4 – TI2

X5 – TI3

X6 – TI4

A PT100 term. A

B1 PT100 term. B1

B2 PT100 term. B2

Page 13: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 13 of 28

6.6 Encoder input

Number of inputs ................. : 1

Input type ............................ : PNP

Encoder type ........................ : Incremental encoder

Input resistance ................... : 1600 Ω

Input ON .............................. : >17,5VDC

Input OFF ............................. : <5VDC

Input hysteresis .................... : typ. 4,5V

Duty cycle ............................ : 40-60%

Update interval ..................... : 10..1000ms

Connector Pins Function

X7 – EI1

GND GND

A Encoder A signal

B Encoder B signal

+24V Supply for transducer

6.7 Digital input

Number of inputs .................. : 4

Input type ............................. : PNP

Input resistance .................... : 1600 Ω

Input ON ............................... : >17,5VDC

Input OFF .............................. : <5VDC

Input hysteresis ..................... : typ. 4,5V

Update interval ..................... : 15..1000ms

Connector Pins Function

X8 – DI1

X9 – DI2

X10 – DI3

X11 – DI4

GND GND

S Signal input

+24V Supply for transducer

Page 14: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 14 of 28

7 Grid monitoring

The module contains monitoring functionality which can be used to control a digital output if

measured voltage or frequency limits are exceeded. The limits can be set up via the CAN bus. See

chapter 9.4 for details regarding parameters.

7.1 Low voltage monitoring

Channels monitored ............. : L1, L2, L3

Monitoring interval .............. : once every period

Voltage limit range ............... : 0..600VRMS

Monitoring bypass ............... : during and 5 seconds after active thyristor output (Parameter)

tlimit ...................................... : 1..65535 periods (default 5 periods)

Action due to low voltage .... : Relay output ’GRID OK’ inactive (ref. chapter 8.1 – digital output)

7.2 High voltage monitoring

Channels monitored ............. : L1, L2, L3

Monitoring interval .............. : once every period

Voltage limit range ............... : 0..600VRMS

Monitoring bypass ............... : during and 5 seconds after active thyristor output (Parameter)

tlimit ...................................... : 1..65535 periods (default 5 periods)

Action due to high voltage ... : Relay output ’GRID OK’ inactive (ref. Chapter 8.1 – digital output)

7.3 Low frequency monitoring

Channels monitored ............. : L1

Monitoring interval .............. : once every period

Frequency limit range .......... : 40..70Hz

Monitoring bypass ............... : during and 5 seconds after active thyristor output (Parameter)

tlimit ...................................... : 1..65535 periods (default 5 periods)

Action due to low frequency : Relay output ’GRID OK’ inactive (ref. Chapter 8.1 – digital output)

Page 15: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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7.4 High frequency monitoring

Channels monitored ............. : L1

Monitoring interval .............. : once every period

Frequency limit range .......... : 40..70Hz

Monitoring bypass ............... : during and 5 seconds after active thyristor output (Parameter)

tlimit ...................................... : 1..65535 periods (default 5 periods)

Action due to high frequency : Relay output ’GRID OK’ inactive (ref. Chapter 8.1 – digital output)

Page 16: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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NC

C

NO

8 Output

8.1 Digital output

Output type ............................. : Relay output NC/NO

Max. current (Circuit limitation): 6A

Max voltage (Circuit limitation) : 250 VAC

Max. update rate ..................... : 20ms

Relay specifications @ 25 °C:

Contact rating AC ..................... : 6A @ 250VAC, depending on type off load!

Contact rating DC ..................... : 6A @ 30VDC, depending on type off load!

Minumum switching load ......... : 10 mA @ 5VDC

Dielectric strength coil-contacts: 4000VRMS

Mechanical life ......................... : Min 10x106 operations

Electrical contact rating ........... : Min 30x10³ operations, depending on type off load!

Contact Material ...................... : Gold platted silver alloy

Operate / release time ............. : 8ms / 4ms

Approvals ................................. : UL, VDE, CSA, SEMCO

NOTE: To improve life, external RC-networks must be applied.

Connector Pins Function

X18 – DO1

NO Normally open

C Common

NC Normally closed

X19 – DO2

NO Normally open

C Common

NC Normally closed

X20 – DO3

NO Normally open

C Common

NC Normally closed

X21 – DO4

NO Normally open

C Common

NC Normally closed

X22 – GRID OK

NO Normally open

C Common

NC Normally closed

Page 17: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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8.2 Thyristor output

Number of outputs ............... : 6

Modulation frequency .......... : 20kHz

Drive angle ............................ : 0..180°

Output drive ......................... : 4V min. @ 600mA load Resolution ......................... : 1°

Galvanic isolation .................. : 4kV (complies with EN60742)

Max. update rate .................. : 20ms

Note: Thyristor outputs are disabled if phase sequence error is detected

Connector Pins Function

X16 –

THYRISTOR CONTROL

1L1 G Gate at thyristor L1 positive

1L1 K Cathode at thyristor L1 positive

1L2 G Gate at thyristor L2 positive

1L2 K Cathode at thyristor L2 positive

1L3 G Gate at thyristor L3 positive

1L3 K Cathode at thyristor L3 positive

X17 –

THYRISTOR CONTROL

2L1 G Gate at thyristor L1 negative

2L1 K Cathode at thyristor L1 negative

2L2 G Gate at thyristor L2 negative

2L2 K Cathode at thyristor L2 negative

2L3 G Gate at thyristor L3 negative

2L3 K Cathode at thyristor L3 negative

Page 18: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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9 CAN-bus

Input / output control and measurement data are transferred via the CAN bus interface. Both

electrical and optical interfaces are available. (The optical interface is an optional add-on module).

Detailed CAN bus information: bus configurations, cable specification and line termination are

available in “Datasheet WTC3 CAN bus”.

9.1 CAN setup

Before the module is powered on, the CAN bus address and bitrate must be set.

Setup is done by the two rotate switches located in the ‘CAN SETUP’ area.

9.1.1 CAN address

The CAN address is set up by the rotate switch ‘ADDRESS’.

ADDRESS Module address

0 Module disabled

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

9.1.2 CAN bitrate

The CAN bitrate is set up by the rotate switch ‘BITRATE’.

BITRATE CAN bitrate

0 125kBit

1 250kBit

2 500kBit

3 1MBit

9.2 Optical interface

An optical interface add-on module can be mounted in JP8/JP9.

No setup on the module is required for using the optical interface.

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9.3 Electrical interface

Bus specification ........................... : CAN 2.0B

Bus impedance .............................. : 120 Ω

Termination .................................. : 120 Ω (Must be applied externally at end points)

Connector Pins Function

X13 – CAN IN

HI CAN bus signal HI

LO CAN bus signal LO

0V CAN bus reference

SHLD CAN bus shield

X12 – CAN OUT

HI CAN bus signal HI

LO CAN bus signal LO

0V CAN bus reference

SHLD CAN bus shield

9.4 Protocol

The protocol used for transferring data over the CAN bus is a process data based protocol with

adjustable update times. For integrating the module into a standard PLC system a library is

available.

Page 20: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

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9.5 Parameters

Several parameters can be set up via CAN, the following table lists the parameters:

Parameter Default Function

High Voltage Limit 440 VAC Upper limit for voltage monitoring as described in chapter 7.2.

High Voltage Periods 5 periods Number of grid periods that measurement shall be above limit to generate fault.

Low Voltage Limit 360 VAC Lower limit for voltage monitoring as described in chapter 7.1.

Low Voltage Periods 5 periods Number of grid periods that measurement shall be below limit to generate fault.

High Frequency Limit 65 Hz Upper limit for frequency monitoring as described in chapter 7.4.

High Frequency Periods 5 periods Number of grid periods that measurement shall be above limit to generate fault.

Low Frequency Limit 41 Hz Lower limit for frequency monitoring as described in chapter 7.3.

Low Frequency Periods 5 periods Number of grid periods that measurement shall be below limit to generate fault.

Current Transformer Ratio

Phase L1, L2 and L3

1:5000 Regarding the current inputs described in chapter 6.1 this ratio is assumed and used for

calculation of RMS current, as well as active and reactive power.

Current Transformer Ratio

Phase L4

1:5000 Regarding the current inputs described in chapter 6.1 this ratio is assumed and used for

calculation of RMS current, as well as active and reactive power.

Grid Monitoring Delay 5 sec Grid monitoring as described in chapter 7 is disabled for this amount of time after thyristor cut-

in.

Cut-in Current Reference 65 % of

nominal

Current controller set point. See current controller description, chapter 10.

Cut-in Current Reference

phase

L1 Phase used for current control during thyristor cut-in can be selected.

Cut-In Nominal Current 2070 A Nominal current. Measured current for current controller are normalized by this parameter,

before it is compared to above parameter.

Cut-in Start Angle 50 deg Start angle for current controller.

Cut-in End Angle 146 deg End angle for current controller. When current controller ramping reaches this angle, cut-in is

considered done, and the thyristor angles are held at this angle.

Cut-in Current Ramp Time 0,5 sec Current controller ramping time. See current controller description, chapter 10.

Cut-in Max Time 10 sec Current controller maximum ramping time. See current controller description, chapter 10.

Cut-in Current Control Gain

Positive

0,25 deg/% Current controller parameter. Used when measured current are smaller than the current set

point. See current controller description, chapter 10.

Cut-in Current Control Gain

Negative

0,07 deg/% Current controller parameter. Used when measured current are higher than the current set

point. See current controller description, chapter 10.

Cut-in Current Control

Integration Time

0,04 sec Current controller parameter. See current controller description, chapter 10.

Cut-in Current Control Start

Current

10% of

nominal

Current controller start set point. See current controller description, chapter 10.

Page 21: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 21 of 28

10 Soft generator cut-in

The module contains a current controller that is intended for soft generator cut-in, by using

thyristors. If desired, the thyristor angles can also be directly controlled via CAN. A block diagram

of the current controller is shown below.

The PI-Controller has four parameters: “Cut-in Current Control Gain Positive”, “Cut-in Current

Control Gain Negative”, “Cut-in Current Control Integration Time” and “Cut-in Start Angle”. The

first three are standard PI-Controller parameters. The “Cut-in Start Angle” parameter is used to

initialize the integration.

The current ramp set point is a ramp, which can be adjusted by setting the corresponding

parameters. The parameters are:

• Cut-in Current Reference

• Cut-in Current Ramp Time

• Cut-in Current Control Start Current

The minimum thyristor angle ramp is a ramp that ensures that the thyristor angles will reach the

angle given by “Cut-in End Angle” within the time set by “Cut-in Max Time”.

The current ramp set point and the minimum angle ramp are shown below:

Page 22: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 22 of 28

11 Jumper settings Jumper State Function

RESET Open (default) HW reset not active

Closed HW reset active – module is in reset state

AB.ENA.

(Asynchronous Boot Enable)

Open (default) Asynchronous bootloader disabled

Closed Asynchronous bootloader enabled - module can be programmed via asynchronous serial

interface (RS232 at X14)

PRG. = SRAM Open (default) Normal operation - program executed from internal flash program memory

Closed For debugging purposes only - program executed from exernal SRAM memory

12 Serial communication interface

An RS232C serial communication interface is available. This interface is intended for debugging

purposes and programming of the module.

Standard baudrate ................ : 75..115,2kBaud

Max. baudrate ...................... : 1.8432MBaud

Handshake ............................ : None

Databits ................................ : 8

Parity .................................... : odd/even/none

Stopbit .................................. : 1 or 2

Connector Pins Function

X14 – RS232C

1 NC

2 RxD

3 TxD

4 NC

5 GND

6 NC

7 NC

8 NC

9 NC

Page 23: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 23 of 28

13 LED indicators

Information about the module status is indicated by several LEDs placed in groups on the module.

Green LEDs.................. : Module related status indicators

Yellow LEDs ................. : Input status indicators

Red LEDs ..................... : Error indicators

13.1 Module status

LED Colour Status Means

AC Green ON 32VAC input OK

OFF 32VAC input missing or below 22VAC

+3V3 Green ON Internal +3V3 supply present

OFF Internal +3V3 supply missing

+5V Green ON Internal +5V supply present

OFF Internal +5V supply missing

+15V Green ON Internal +15V supply present

OFF Internal +15V supply missing

-15V Green ON Internal -15V supply present

OFF Internal -15V supply missing

+24V Green ON Internal +24V supply present

OFF Internal +24V supply missing

+24V THY Green ON Thyristor output +24V supply present

OFF Thyristor output +24V supply missing

+24V SENSOR Green ON Sensors +24V supply present

OFF Sensors +24V supply missing

FPGA OK Green Red RED FPGA was not loaded

GREEN FPGA was loaded

CPU LIVE Yellow STEADY CPU not running

FLASHING CPU running

WD Red ON External watchdog is resetting CPU

OFF Normal operation.

MOD. ERR. Red ON A fatal module error was detected. Replace module.

OFF No errors detected.

BUS OFF Red ON

An error condition caused the module to disconnect from the CAN bus.

All outputs are disabled.

The module must be reset to exit this mode.

OFF No BUS OFF conditions has occurred.

GUARD Green Red

OFF Module has not yet been enabled via the CAN-bus.

This is not an error condition.

GREEN

FLASHING

Toggle state every time a guard telegram is received via CAN bus, and guard

function is enabled. The signal will start toggle 10 sec. after receiving the first

SystemEnable telegram via CAN bus.

This is not an error condition.

RED

FLASHING

Toggle state every time a guard telegram is received via CAN bus, and guard

function is disabled. This mode is intended for debugging purposes.

This is not an error condition.

RED ON

A guard timeout occurred. Module is offline CAN, and outputs are disabled by

module.

This is an error condition.

GREEN ON The module might have entered the temperature reset mode.

This is not an error condition.

PH. DIR ERR Red ON Phase sequence wrong

OFF Phase sequence OK

STATUS0 Yellow - For future use

STATUS1 Yellow - For future use

Page 24: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 24 of 28

13.2 Digital Input

LED Colour Status Means

DI1

DI2

DI3

DI4

Yellow ON Digital input active

OFF Digital input not active

13.3 Encoder Input

LED Status Means

EI1A

EI1B Yellow

Encoder input active

Encoder input not active

13.4 CAN Rx/Tx

LED Colour Status Means

CAN Tx Green ON Indicating Tx activity on CAN bus

CAN Rx Yellow ON Indicating Rx activity on CAN bus

13.5 RS232 Rx/Tx

LED Colour Status Means

RS232 Tx Green ON Indicating Tx activity on RS232 interface

RS232 Rx Yellow ON Indicating Rx activity on RS232 interface

Page 25: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 25 of 28

14 Standards

14.1 EMC standards

DS/EN 50081-2:1994 ............ : Electromagnetic compatibility - Generic emission standard - Part 2:

Industrial environment

DS/EN 61000-6-2:1999 ........ : Electromagnetic compatibility (EMC) - Part 6-2: Generic standards –

Immunity for industrial environment

14.2 Safety standards

DS/EN 60742 ....................... : 1996 Isolating transformers and safety isolating transformers –

Requirements

14.3 Grid monitoring standards and recommendations

DEFU Recommendation 111 : Connection of Wind Turbines to Low and Medium Voltage

Networks.

Page 26: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 26 of 28

15 Module view

AC V

olta

ge in

put

AC C

urre

nt in

put

Grid

OK o

utpu

t

Digita

l out

put

Dig

ital o

utpu

t

Digita

l out

put

Dig

ital o

utpu

t

Thyris

tor d

rive

outp

ut

Thyris

tor d

rive

outp

ut

Tempe

ratu

re in

put 1

..4

AC C

urre

nt in

put

Enc

oder

inpu

t

Dig

ital inp

ut 1

..4

CAN b

us

optic

al in

terfa

ce

CAN B

us

Ele

ctric

al in

terfa

ce

RS23

2 Ser

ial int

erfa

ce

Sup

ply

inpu

t

Page 27: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 27 of 28

16 Mechanical

16.1 Mounting plate

Unit: mm

5,0

0

249,50

12

,00

13,50

263,00

31

3,0

0

32

0,0

0

Ø10.00

Ø5,5033

0,0

0

PC

B

21,50 21,50

Page 28: Datasheet WTC3 Grid Module V55x3 - KK Wind …...Bøgildvej 3 DK-7430 Ikast Phone Fax CVR +45 96 92 43 00 +45 97 21 14 31 25 74 67 16 E-mail Web main@kkwindsolutions.com Datasheet

Copyright © KK Wind Solutions A/S, Denmark Page 28 of 28

Liability note

This document has been prepared with care. The product described is, however, constantly under development. For this reason the

document may not in every case have been checked for consistency with regards to performance data, standards or other

characteristics to the products delivered. In the event that this document contains technical or editorial information not reflected in

the products delivered, we reserve the right to make alterations to this document at any time and without prior warning. The data,

diagrams, descriptions and other information in this document shall not in any way form the basis of a direct or indirect claim against

us if the products have been delivered and the modifications in the products are not reflected in this document.