Danfoss VLT MCD 200 Manual de usuario

MCD Modbus Module Instructions Introduction

MG.17.F5.02 - VLT®is a registered Danfoss trademark 1

INSTALLATION INSTRUCTIONS: MCD MODBUS MODULE

Order Code: 175G9000

1. Introduction

Danfoss soft starters can be controlled and monitored across an RS485 serial communication

network using the Modbus RTU and AP ASCII protocols.

For users requiring simple control of MCD 200 and MCD 500 soft starters using Modbus RTU or AP

ASCII, the instructions below describe the installation and operation of the Modbus Module.

MCD 3000 soft starters have AP ASCII protocol support built in - see the MCD 3000 Users Manual for

details of message formats. The MCD 3000 supports Modbus RTU control when used in conjunction

with a Remote Operator.

This document describes Modbus and AP ASCII messaging and

Appendix A

describes how to connect

the Remote Operator and use it as a Modbus RTU or AP ASCII slave device.

2. Installation

1. Remove control power and mains supply from the soft starter.

2. Attach the Modbus Module to the starter as shown.

3. Apply control power to the soft starter.

MCD 200 MCD 500

177HA261.11

177HA528.10

Remove the Modbus Module using the following procedure:

1. Disconnect the RS485 cable from the module.

2. Remove control power and mains supply from the soft starter.

3. Push a small flat-bladed screwdriver into the slots at the top and

bottom of the module and depress the retaining clips.

4. Pull the module away from the soft starter.

177HA378.10

CAUTION

Remove mains and control voltage from the soft starter before attaching or removing

accessories. Failure to do so may damage the equipment.

Adjustment MCD Modbus Module Instructions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 2

3. Adjustment

Network communication parameters must be set on the Modbus Module. DIP switch settings take

effect on the power-up of the Modbus Module via the soft starter.

123456

Protocol

Address

Baud Rate

Parity

imeout

(seconds)

4800

OFF

9600

OFF

19200

38400

ONOFF

No Parity

OFF

ODD

OFF

EVEN

10 bit

ONOFF

No ime Out

OFF

10 s

OFF

60 s

100 s

ONOFF

ASCII

OFF

R U

Example: Address = 24

+16

DIP SWI CH A DIP SWI CH B

177HA262.11

4. Connection

For the Modbus Module to accept serial commands, a link must be fitted across terminals A1-N2 on

MCD 200 Series starters.

In order for the MCD 500 to accept commands from the serial network, the soft starter must be in

Auto On mode and links must be fitted to terminals 17 and 25 to 18.

In Hand On mode, the starter will not accept commands from the serial network but the starter's

status can still be monitored.

MCD 200 MCD 500

177HA326.12

MCD 200

RS485

SERIAL PORT

B8 B7 B6

GND -

MODBUS

MODULE

RS485

Modbus network

connection

MCD 500

(Auto On mode)

RS485 serial port

B8 B7 B6

+ GND -

MODBUS

MODULE

RS485

Modbus network

connection

Stop

COM

Reset

177HA532.10

N.B.!:

If MCD 500 parameter 3-2

Comms in Remote

is set to Disable Comms in Remote, the

starter will not accept start or stop commands from the serial network (the starter will

still accept reset commands and allow status monitoring).

MCD Modbus Module Instructions Network Status LED

MG.17.F5.02 - VLT®is a registered Danfoss trademark 3

5. Network Status LED

The Network Status LED indicates the state of the

communications link between the module and the network.

LED operation is as follows:

LED

177HA263.11

Off On Flashing

No connection or soft starter not

powered up Communication active Communication inactive

N.B.!:

If communication is inactive, the soft starter may trip if the Communications Timeout

function has been set on the module. When communication is restored, the soft starter

will require a Reset.

Modbus Register MCD Modbus Module Instructions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 4

6. Modbus Register

Address

Type

Description

MCD 201

MCD 202

MCD 500

MCD 3000

40002 Single Write 1 = Start

Command 2 = Stop

3 = Reset

4 = Quick stop (coast to stop)

5 = Forced communication trip

40003 Multiple Read Bit Description

Starter

status

0 to 3 1 = Ready

2 = Starting

3 = Running

4 = Stopping (including braking)

5 = Restart delay (including

Temperature check)

6 = Tripped

7 = Program mode

8 = Jog forward

9 = Jog reverse

4 1 = Positive phase sequence (only valid if bit

6 = 1). Always = 0

5 1 = Current exceeds FLC

6 0 = Uninitialised

1 = Initialised

7 Always = 0

40004

Trip Code Multiple Read See Trip Code table.

40005 1

Motor

current

Multiple Read Average 3 phase motor current (A)

40006

Motor

temperature

Multiple Read Motor temperature (thermal model)

40007 Multiple Read Bit Description

Product Type 0 to 2 Product parameter list version

and Version 3 to 7

1= MCD 3000

4= MCD 200

7 = MCD 500

40008

Serial

Protocol

Version

Multiple Read

40009 2 ~ Single Write Parameter 1-A (Motor FLC) to:

Parameter and Multiple •MCD 500 Par. 20-6 (Pedestal Detect)

management Read •MCD 3000 Par. 60 (Min Run Frequency)

MCD Modbus Module Instructions Modbus Register

MG.17.F5.02 - VLT®is a registered Danfoss trademark 5

1For MCD 500 models MCD5-0068B and smaller this value will be 10 times greater than the value

displayed on the LCP.

2See the relevant soft starter literature for a complete parameter list. The first product parameter

is always allocated to register 40009. The last product parameter is allocated to register 40XXX,

where XXX = 008 plus total number of available parameters in the product.

N.B.!:

The numbering of parameter options via serial communications differs slightly from the

numbering displayed on the LCP. Numbering via the Modbus Module starts at 0, so for

Par. 2-1 Phase Sequence, the options are 1~3 on the LCP but 0~2 via the module.

Trip Codes MCD Modbus Module Instructions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 6

7. Trip Codes

Trip

Code

Trip Name

MCD 201

MCD 202

MCD 500

MCD 3000

1 Excess start time

2 Motor overload (thermal model)

3 Motor thermistor

4 Current imbalance

5 Frequency (Mains supply)

6 Phase sequence

7 Instantaneous overcurrent

8 Power loss (Power circuit)

9 Undercurrent

10 Heatsink overtemperature

11 Motor connection

12 Input A trip (Auxiliary input A)

13 FLC too high (FLC out of range)

14 Unsupported option (Not available in 6-wire)

15 Starter communication

16 Network communication

17 Internal fault

23 EEPROM fail

26 L1 phase loss

27 L2 phase loss

28 L3 phase loss

29 L1-T1 Shorted

30 L2-T2 Shorted

31 L3-T3 Shorted

33 Time-overcurrent (Bypass overload)

35 Battery/clock

36 Thermistor circuit

255 No trip

MCD Modbus Module Instructions Modbus Functions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 7

8. Modbus Functions

The Modbus Module supports the following Modbus functions:

03 Read multiple registers

06 Write single register

Modbus broadcast functions are not supported.

MCD 200 soft starters (including Remote Operator):

Read multiple registers 40003 to 40008

Write single register 40002

MCD 500 soft starters:

Read multiple registers starting from 40003 up to a maximum of 125 register blocks

Write single register 40002 or 40009 to 40599

N.B.!:

A multiple read across register boundary 40008/40009 will result in a Modbus Error code

05 at the Master.

Modbus Module version 3 and earlier (serial number xxxxxx-3) can read a maximum of

119 register blocks.

8.1. Master Configuration

For standard Modbus 11-bit transmission, the Master must be configured for 2 stop bits with No

Parity and 1 stop bit for odd or even parity.

For 10-bit transmission, the Master must be configured for 1 stop bit.

In all cases, the Master baud rate and slave address must match those set on the Modbus Module DIP

switches.

Command: Start

Message Starter

Address

Function Code Register

Address

Data CRC

In 20 06 40002 1 CRC1, CRC2

Out 20 06 40002 1 CRC1, CRC2

Starter status: Running

Message Starter

Address

Function Code Register

Address

Data CRC

In 20 03 40003 1 CRC1, CRC2

Out 20 03 2 (bytes) 3 CRC1, CRC2

Trip code: Motor overload

Message Starter

Address

Function Code Register

Address

Data CRC

In 20 03 40004 1 CRC1, CRC2

Out 20 03 2 (bytes) 2 CRC1, CRC2

Download parameter from starter

MCD 500: Read Parameter 1, Motor FLC (Parameter 1-1), 100 A

Message Starter

Address

Function

Code

Address

Data CRC

In 20 03 40009 1 CRC1, CRC2

Out 20 03 2 (bytes) 100 CRC1, CRC2

Modbus Error Codes MCD Modbus Module Instructions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 8

Upload parameter to starter

MCD 500: Write Parameter 4, Current Limit (Parameter 1-4), set = 400% FLC

Message Starter

Address

Function

Code

Address

Data CRC

In 20 06 40012 400 CRC1, CRC2

Out 20 06 40012 400 CRC1, CRC2

9. Modbus Error Codes

Code Description Example

01 Illegal function code Function other than 03 or 06

02 Illegal data address Register number invalid

03 Not readable data Register not allowed for data reading

04 Not writable data Register not allowed for data writing

05 Data boundary fault Multiple data transfer across data boundary or data size more than

125

06 Invalid command code e.g. writing "6" into 40003

07 Illegal parameter read Invalid parameter number

08 Illegal parameter write Invalid parameter number, read only, or hidden parameter

09 Unsupported command

Sending a serial command to MCD 500 with parameter 3-2 =

Disable control in RMT.

10 Local communication error Communication error between Modbus slave and starter

N.B.!:

Some of the above codes are different from those defined in the Modbus Application

Protocol Specification available on www.modbus.org.

MCD Modbus Module Instructions AP ASCII Protocol

MG.17.F5.02 - VLT®is a registered Danfoss trademark 9

10. AP ASCII Protocol

The message fragments used to communicate with the Modbus Module as an AP ASCII slave device

are shown below. The message fragments may be assembled into complete messages as described

in the sections that follow.

N.B.!:

Data must be transmitted in 8-bit ASCII, no parity, one stop bit.

Message Fragment Type ASCII Character String or

(Hexadecimal Character String)

Send address EOT

(04h [nn]

[nn] [lrc]

[lrc] ENQ or

05h)

Send command STX [ccc] [lrc] ETX or

Send request (02h [ccc] [lrc] 03h)

Receive data STX

(02h [dddd]

[dddd] [lrc]

[lrc] ETX or

03h)

Receive status STX

(02h [ssss]

[ssss] [lrc]

[lrc] ETX or

03h)

ACK (acknowledge) ACK

(06h) or

NAK (negative

acknowledge) NAK

(15h) or

ERR (error) BEL

(07h) or

nn = two byte ASCII number representing the soft starter address where each decimal digit is

represented by n.

lrc = two byte longitudinal redundancy check in hexadecimal.

ccc = three byte ASCII command number where each character is represented by c.

dddd = four byte ASCII number representing the current or temperature data where each decimal digit is

represented by d.

ssss = four byte ASCII number. The first two bytes are ASCII zero. The last two bytes represent the nibbles

of a single byte of status data in hexadecimal.

10.1. Commands

Commands can be sent to the soft starter using the following format:

Send

address

ACK Send

command

ACK

Possible error responses:

NAK (Invalid LRC)

= Master

=Slave (softstarter)

Command ASCII Comment

Start B10 Initiates a start

Stop B12 Initiates a stop

Reset B14 Resets a trip state

Quick stop B16 Initiates an immediate removal of voltage from the motor. Any soft

stop settings are ignored.

Forced communication trip B18 Causes a communications trip

AP ASCII Protocol MCD Modbus Module Instructions

MG.17.F5.02 - VLT®is a registered Danfoss trademark 10

10.2. Status Retrieval

Soft starter status can be retrieved using the following format:

ACK

NAK

177HA316.12

Send

Address Send

Request Receive

Status

Invalid LRCPossible error responses

= Master = Slave (MCD)

Request ASCII Receive Status (ssss)

Trip code C18 See the trip code table.

Starter status C22 Bit Description

0 to 3 1 = Ready

2 = Starting

3 = Running

4 = Stopping (including braking)

5 = Restart delay (including Temperature check)

6 = Tripped

7 = Program mode

4 1 = Positive phase rotation (only valid if bit 6 = 1)

5 1 = Current exceeds FLC

6 0 = Uninitialised

1 = Initialised

7 0 = Communications are OK

1 = Communications device fault

10.3. Data Retrieval

Data can be retrieved from the soft starter using the following format:

ACK

NAK

177HA313.10

Send

Address Send

Request Receive

Data

Invalid LRCPossible error responses

= Master = Slave (MCD)

Request ASCII Receive Data (dddd)

Motor current D10 Requests motor current. The data is four byte decimal ASCII. Minimum value

0000 A, maximum value 9999 A.

Motor

temperature D12 Requests the calculated value of the motor thermal model as a % of motor

thermal capacity. The data is four byte decimal ASCII. Minimum value is

0000%. Trip point is 0105%.

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