Danfoss 175G9001 MCD Profibus Module Installation Guide

: June 1, 2024
: Danfoss

Danfoss 175G9001 MCD Profibus Module

Product Information

Specifications

Product Name: MCD Profibus Module
Order Code: 175G9001
Connection: 9-pin Sub-D connector
Power Supply: Can be powered through the network cable or externally (24 VDC)

Product Usage Instructions

1. Installation:

Before starting the installation process, ensure to remove mains and control voltage from the soft starter.

Remove control power and mains supply from the soft starter.
Attach the module to the soft starter following the provided illustrations.
Set the module address to match the address set in the Master configuration tool.
Apply control power to the soft starter.
Insert the network connector and power up the module.

Physical Installation:

Fully pull out the top and bottom retaining clips on the module.
Line up the module with the comms port slot.
Push in the top and bottom retaining clips to secure the module to the starter.

Configuration:

Import the latest .gsd file into your Master configuration tool from www.danfoss.com/drives. Ensure that the Communication Timeout parameter is set to avoid network failures.

Adjustment:

Prior to powering up the Profibus Module, set the two rotary switches to match the address set in your Master configuration tool.

Connection:

The module connects to the Profibus network via a standard 9-pin Sub-D connector. It can be powered through the network cable or externally (24 VDC).

MCD 200:

To accept serial commands, a link must be fitted across terminals A1-N2 on the soft starter.

MCD 500:

In Auto On mode, links must be fitted to terminals 17, 18, and 25, 18 for accepting commands from the serial network. In Hand On mode, commands are not accepted but status can be monitored.

Frequently Asked Questions

Q: What should I do if the soft starter fails to start after installing the Profibus Module?

A: Ensure that all connections are secure and that the module address matches the Master configuration tool. Double-check the power supply and network connections.

Installation Instruction: MCD Profibus Module
Order Code: 175G9001

Important User Information

Observe all necessary safety precautions when controlling the soft starter remotely. Alert personnel that machinery may start without warning.
It is the installer’s responsibility to follow all instructions in this manual and to follow correct electrical practice.

Installation

CAUTION
Remove mains and control voltage from the soft starter before attaching or removing accessories. Failure to do so may damage the equipment.

Remove control power and mains supply from the soft starter.
Attach the module to the soft starter as illustrated.
Set the module address to match the address set in the Master configuration tool.
Apply control power to the soft starter.
Insert the network connector and power up the module.

Physical Installation

Fully pull out the top and bottom retaining clips on the module.
Line up the module with the comms port slot.
Push in the top and bottom retaining clips to secure the module to the starter.

Danfoss-175G9001-MCD-Profibus-Module-FIG-1

Remove the Profibus Module using the following procedure:

Remove control power and mains supply from the soft starter.
Disconnect all field wiring from the module.
Fully pull out the top and bottom retaining clips on the module.
Pull the module away from the soft starter.

Configuration

Import the latest .gsd file into your Master configuration tool. This file is available from www.danfoss.com/drives.
If your Master uses on-screen icons, two graphic bitmap files are available from the website. SSPM_N.bmp indicates normal mode. SSPM_D.bmp indicates diagnostic mode.

N.B.!:
The Profibus Module has a slave address range of 0 to 99.

If the Profibus network fails, the module will leave data exchange mode after the network watchdog timeout period has expired. This timeout period is set at the Master configuration tool.
A Communication Timeout parameter in the GSD file sets how soon after this event the soft starter will be forced into a trip state.
The user can adjust the Communication Timeout parameter in the GSD file to any setting between 0 and 100 seconds. The default setting is 10 seconds.

N.B.!:
If the Communication Timeout parameter is set to 0, the current state of the soft starter will remain unchanged on a network failure. This gives the user the option of operating the soft starter via local control, but is NOT failsafe.

Adjustment

Before powering up the Profibus Module, set the two rotary switches so that the module address matches the address set in your Master configuration tool (the diagram shows the factory default setting for the rotary switches).
The module automatically detects the network data rate.

Connection

The module connects to the Profibus network via a standard 9-pin Sub-D connector.
The Profibus Module can be powered either through the network cable or externally (24 VDC).
MCD 200: For the Profibus Module to accept serial commands, a link must be fitted across terminals A1-N2 on the soft starter.
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, 18 and 25, 18.
In Hand On mode, the starter will not accept commands from the serial network but the starter’s status can still be monitored.

Danfoss-175G9001-MCD-Profibus-Module-FIG-3

| MCD 200| | MCD 500 (Auto On mode) 17, 18: Stop

25, 18: Reset

---|---|---|---
| Profibus Module| | Profibus Module
| External 24 VDC supply required if not powered through bus| | External 24 VDC supply required if not powered through bus
| 9-pin Sub-D connector to Profibus network| | 9-pin Sub-D connector to Profibus network
9-pin Sub-D connector
Pin No.| Assignment
1| Shield
2| 24 VDC negative (optional)
3| RxD/TxD-P
4| Not used
5| DGND
6| VP (end of bus slave only)
7| 24 VDC positive (optional)
8| RxD/TxD/-N
9| DGND

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).

Danfoss-175G9001-MCD-Profibus-Module-FIG-4

N.B.!:
If communication fails between the module and the network, the Bus Status LED will go off. When communication is restored, the Bus Status LED will come back on.
N.B.!:
When a communications failure occurs, the soft starter may trip if the Communication Timeout parameter for the network is set greater than zero. When communication is restored, the soft starter must be reset.

Data Structures

The GSD file contains three operating modules, supporting data I/O structures as follows:

Danfoss-175G9001-MCD-Profibus-Module-FIG-5

The Basic Module allows the user to start and stop the soft starter and read limited information on operating status.
The Extended Module defines additional bytes allowing the user to read soft starter operating data such as actual motor current and motor temperature.
The Parameter Upload/Download Module allows the user to read and write soft starter parameter values (only applicable to MCD 500 soft starters).

Soft Starter Control I/O Data Structure

Master > Slave control word is structured as follows:

Byte 0

Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
Reserved| Reserved| Reserved| Quick stop| Motor set| Reserved| Reserved
Byte 1
Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
Reserved| Reserved| Reserved| Reserved| Reset| Reserved| Reserved| Fwd run

Quick stop bit

When Fwd run bit changes from 1 to 0:
0 = stop action will be a soft stop (as selected on the soft starter).
1 = stop action will be a quick stop (i.e. coast to stop).

N.B.!:
The Quick stop bit must be set to 0 before the soft starter can perform a start.

Motor set bits

Selects which parameter set to use when starting:
0 = selected from soft starter remote input (programmable input must be set to ‘Motor Set Select’)
1 = soft starter primary motor set (ensure soft starter programmable input is not set to ‘Motor Set Select’)
2 = soft starter secondary motor set (ensure soft starter programmable input is not set to ‘Motor Set Select’)
3 = Reserved
Slave > Master status word is structured as follows:

Byte 0

Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
Ramping| Hand On| Motor current (% FLC) 1
Byte 1
Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
Reserved| Reserved| Reserved| Reserved| Warning| Fault| On| Ready

Motor current (% FLC) represents current as a percentage of the set motor full load current. A maximum value of 63 represents 200% full load current. To convert this value to a readable percentage, divide by 0.315.

Ready is set when the soft starter is ready to start the motor.
On is set when the soft starter is starting, running or soft stopping the motor. Warning is set when the soft starter detects a warning condition.
Fault is set when the soft starter has tripped.
Ramping is set when the soft starter is starting or soft stopping the motor. Hand On is set when the soft starter is set to Hand On mode.

Soft Starter Monitoring I/O Data Structure

Master > Slave output byte is structured as follows:

Byte 2
Operating data request (Data request numbers 1 to 14)

Slave > Master input bytes, in response to an operating data request, are structured as follows:

Byte 2

Echo data request number
Byte 3
Bits 7 to 1 Reserved| Bit 0 = 1: Invalid data request number
Byte 4
Data value – high byte
Byte 5
Data value – low byte

N.B.!:
An invalid data request number will result in the invalid data request number bit being set = 1.

Data values are defined as follows:

Data

Request Number

| Data Value High Byte| Data Value Low Byte
---|---|---
0| Reserved
1| Soft starter product type code 1| Soft starter software version number
2| Trip/Warning code| Soft starter status
3 2| Average current (high byte)| Average current (low byte)
4 3| Motor 2 temperature| Motor 1 temperature
5| Reserved| Percentage power factor
6| Power (kW)
7| Power (kVA)
8| Average voltage
9 2| L1 current
10| L2 current
11| L3 current
12| L1 voltage
13| L2 voltage
14| L3 voltage
15| Software major version number| Software minor revision number
16| Reserved| Digital input state

1 Product type code:
4 = MCD 200
7 = MCD 500
2 For models MCD5-0428C and smaller this value will be 10 times greater than the value displayed on the LCP.
3 Motor temperature is calculated using the soft starter thermal modelling.

N.B.!:
Data request numbers 5 to 11 are only valid for MCD 500 starters. MCD 200 starters will return zero values.

Soft starter status
The low byte data value of data request number 2 reports soft starter status.
Bits 0 to 3 function as follows:

Value (decimal) Bits 0 to 3| Soft Starter Status
---|---
0| Unknown (communication error between module and soft starter)
1| Ready to start (waiting)
2| Starting (soft starting)
3| Running (running – full voltage at the motor)
4| Stopping (soft stopping)
5| Not ready (restart or thermal delay and Run simulation)
6| Fault (tripped)
71| Menu or Logs Menu open
81| Jog Forward (slow speed)
91| Jog Reverse (slow speed)

1 Only available on MCD 500 soft starters.
Bits 4 to 7 function as follows:

Bit Number	Function
Bit 4	Set if positive phase sequence detected (Bit 6 must = 1)
Bit 5	Set if average current exceeds Motor FLC setting
Bit 6	Set after first start once phase sequence has been confirmed
Bit 7	Set if a communication failure occurs between module and soft starter

Power
Input bytes for data request numbers 6 and 7 are defined as follows:

| Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
---|---|---|---|---|---|---|---|---
High Byte| Power scale factor| Power high nibble
Low Byte| Power low byte

Powerscale functions as follows:

0 = multiply Power by 10 to get W
1 = multiply Power by 100 to get W
2 = Power is represented in kW
3 = multiply Power by 10 to get kW

Digital Input State
The low byte of data request number 16 reports digital input state as follows (0 = open, 1 = closed):

| Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
---|---|---|---|---|---|---|---|---
Low Byte| Reserved| Input A| Reset| Stop| Start

Trip Codes

Data request number 2 high byte indicates the soft starter trip or warning code. Details are as follows:

Danfoss-175G9001-MCD-Profibus-Module-FIG-6

For MCD 500, time-overcurrent protection is only available on internally bypassed models.

Internal Fault x

The table below details the internal fault code associated with trip code 17.

Internal fault	Message displayed on the LCP
70, 71, 72	Current Read Err Lx
73	Power On in Simulation mode
74, 75, 76	Motor connection Tx
77, 78, 79	Firing fail SCRx
80, 81, 82	VZC Fail Px
83	Low Control Volts
84 to 98	Internal fault X

Contact your local supplier with the fault code (X).

Soft Starter Programming I/O Data Structure

The Soft Starter Programming I/O Data Structure allows the user to upload (read) and download (write) soft starter parameter values over the network.

Master > Slave output bytes are structured as follows.

| Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
---|---|---|---|---|---|---|---|---
Byte 3| Parameter number to read/write
Byte 4| Reserved| Reserved| Reserved| Reserved| Reserved| Write parameter| Read parameter| Reserved
Byte 5| High byte parameter value to write to soft starter/ zero data values for read
Byte 6| Low byte parameter value to write to soft starter/ zero data values for read

Slave > Master input bytes are structured as follows

| Bit 7| Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
---|---|---|---|---|---|---|---|---
Byte 6| Echo parameter number
Byte 7|

Reserved

|

Reserved

|

Reserved

| Parameter access level| Write

access denied

| Invalid

parameter value

| Invalid

parameter number

Byte 8| High byte parameter value read from soft starter
Byte 9| Low byte parameter value read from soft starter

Parameter access level is defined as follows:
0 = Read only
1 = Operator (MCD 500 parameter groups 1 to 8)
2 = Supervisor (MCD 500 parameter groups 15 and 16)
3 = Commissioning (MCD 500 parameter group 20)

N.B.!:
This operating module only functions with MCD 500 soft starters.

Profibus Diagnostic Telegram and Flag

The Profibus Module supports external diagnostics. The following telegram will be sent to the Master if the soft starter trips or if a parameter is changed at the soft starter.

Diagnostic Telegram Data Structure

Byte 0| User diagnostic length (Always set = 3)
Byte 1| Trip code
Byte 2| Changed parameter number (MCD 500 only)

Profibus Trip Code

When the soft starter trips, a diagnostic flag is set at the Master and the trip code is reported in Byte 1. When the soft starter is reset, the diagnostic flag and trip code data are reset = 0, provided the trip condition does not still exist (see Soft Starter Monitoring I/O Data Structure on page 6 for trip codes).

Changed Parameter Number
If a parameter is changed via the LCP, the affected parameter number is reported in Byte 2.
When the Master reads or writes the changed parameter, Byte 2 is reset = 0.
A changed parameter number does not set a diagnostic flag.

Profibus Freeze Mode

The Profibus Module supports Freeze Mode.
In Freeze Mode, inputs are only updated with new data from the soft starter when another Freeze action is carried out. An Un-Freeze action returns the Profibus Module to normal operation.

Profibus Sync Mode

The Profibus Module supports Sync Mode.
In Sync Mode, commands to the soft starter are not processed until another Sync action is carried out. An Un-Sync action returns the Profibus Module to normal operation.