Danfoss MCA 125 Programming guide

ENGINEERING TOMORROW

Programming Guide

VLT® BACnet/IP MCA 125

VLT® HVAC Drive FC 102

vlt-drives.danfoss.com

Contents Programming Guide

Contents

1 Introduction

1.1 Purpose of the Manual

1.2 Additional Resources

1.3 Document and Software Version

1.4 Product Overview

1.5 Approvals and Certications

1.6 Symbols, Abbreviations, and Conventions

2 Safety

2.1 Safety Symbols

2.2 Qualied Personnel

2.3 Safety Precautions

3 Conguration

3.1 IP Settings

3.2 Ethernet Link Parameters

3.3 IP Trac

3.4 BACnet Settings

3.5 Network Monitoring

4 BACnet Objects

5 Parameters

5.1 Parameter Group 8-**

5.2 Parameter Group 12-**

5.3 Parameter List

5.4 Data Types

6 Foreign Device

7 Troubleshooting

7.1 Step-by-step Troubleshooting

7.1.1 LED Status 34

7.1.2 No Communication with the Frequency Converter 35

8 Appendix

8.1 BIBBs

Index

Introduction

VLT® BACnet/IP MCA 125

1 Introduction

1.1 Purpose of the Manual

The VLT® BACnet/IP MCA 125 Programming Guide provides information about conguring the system, controlling the frequency converter, parameter access, programming, and troubleshooting.

The programming guide is intended for use by

personnel familiar with the VLT® frequency converter, with BACnet/IP technology, and with the PC or PLC used as a master in the system.

Read the instructions before programming and follow the procedures in this manual.

VLT® is a registered trademark.

BACnet™ is a registered trademark of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE).

1.2 Additional Resources

Resources available for the frequency converters and optional equipment:

The relevant frequency converter operating guide

•

provides the necessary information for getting the frequency converter up and running.

The relevant frequency converter design guide

•

provides detailed information about capabilities and functionality to design motor control systems.

The relevant frequency converter programming

•

guide provides greater detail on working with parameters and many application examples.

The VLT® BACnet/IP MCA 125 Installation Guide

•

provides information about installing the BACnet/IP and about troubleshooting.

qualied

Document and Software Version

1.3

Software version

Edition Remarks

MG92L1xx First edition 4.4x 1.02

Table 1.1 Document and Software Version

Frequency

converter

BACnet/IP

MCA 125

1.4 Product Overview

1.4.1 Intended Use

This programming guide relates to BACnet/IP interface. Ordering numbers:

134B1586 (conformal coated)

•

The BACnet/IP interface is designed to communicate with any system complying with the BACnet/IP standard. BACnet/IP provides users with the network tools to deploy standard Ethernet technology for building automation applications while enabling internet and enterprise connectivity.

VLT® BACnet/IP MCA 125 is intended for use with:

VLT® HVAC Drive FC 102.

•

Approvals and Certications

1.5

More approvals and certications are available. For more information, contact a local Danfoss partner.

The VLT® BACnet/IP MCA 125 Programming Guide

•

provides information about conguring the system, controlling the frequency converter, parameter access, programming, troubleshooting, and some typical application examples.

Supplementary publications and manuals are available from Danfoss. See drives.danfoss.com/knowledge-center/ technical-documentation/ for listings.

Introduction Programming Guide

1.6 Symbols, Abbreviations, and Conventions

Abbreviation Denition

AI Analog input

AO Analog output

AV Analog value

B-AAC BACnet advanced application controller

B-ASC BACnet application-specic controller

BI Binary input

BMS Building management system

BO Binary output

BV Binary value

CC Control card

CO Exception calendar

COS Change of state

COV Change of value

CSV Character string value

CTW Control word

DHCP Dynamic host conguration protocol

EE Event enrollment

EMC Electromagnetic compatibility

FC Frequency converter

I/O Input/output

IP Internet protocol

LAN Local area network

LCP Local control panel

LED Light emitting diode

Lsb Least signicant bit

MAV Main actual value (actual output)

MRV Main reference value

Msb Most signicant bit

MSV Multi-state value

N/A Not applicable

NC Notication class

PC Personal computer

PLC Programmable logic controller

PNU Parameter number

REF Reference (= MRV)

RSTP Rapid spanning tree protocol

RTC Real-time clock

SO Schedule object

STP Spanning tree protocol

STW Status word

TL Trend log

UTC Universal time coordinated

Conventions

Numbered lists indicate procedures. Bullet lists indicate other information and description of illustrations.

Italicized text indicates:

Cross-reference.

•

Link.

•

Parameter name.

•

Parameter group name.

•

Parameter option.

•

All dimensions in drawings are in mm (in).

1 1

Table 1.2 Symbols and Abbreviations

Safety

VLT® BACnet/IP MCA 125

2 Safety

2.1 Safety Symbols

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.

2.2 Qualied Personnel

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

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

Safety Precautions

2.3

WARNING

HIGH VOLTAGE

Frequency converters contain high voltage when connected to AC mains input, DC supply, or load sharing. Failure to perform installation, start-up, and maintenance by qualied personnel can result in death or serious injury.

Only qualied personnel must perform instal-

•

lation, start-up, and maintenance.

WARNING

UNINTENDED START

When the frequency converter 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 MCT 10 Set-up Software, or after a cleared fault condition.

To prevent unintended motor start:

Press [O/Reset] on the LCP before

•

programming parameters.

Disconnect the frequency converter from the

•

mains.

Completely wire and assemble the frequency

•

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

WARNING

DISCHARGE TIME

The frequency converter contains DC-link capacitors, which can remain charged even when the frequency converter is not powered. High voltage can be present even when the warning LED indicator lights are o. Failure to wait the specied time after power has been removed before performing service or repair work can result in death or serious injury.

Stop the motor.

•

Disconnect AC mains and remote DC-link

•

supplies, including battery back-ups, UPS, and DC-link connections to other frequency converters.

Disconnect or lock PM motor.

•

Wait for the capacitors to discharge fully. The

•

minimum waiting time is specied in the chapter Safety in the operating guide supplied with the frequency converter.

Before performing any service or repair work,

•

use an appropriate voltage measuring device to make sure that the capacitors are fully discharged.

Safety Programming Guide

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the frequency converter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

WARNING

EQUIPMENT HAZARD

Contact with rotating shafts and electrical equipment can result in death or serious injury.

Ensure that only trained and qualied personnel

•

perform installation, start-up, and maintenance.

Ensure that electrical work conforms to national

•

and local electrical codes.

Follow the procedures in this guide.

•

2 2

CAUTION

INTERNAL FAILURE HAZARD

An internal failure in the frequency converter can result in serious injury when the frequency converter is not properly closed.

Ensure that all safety covers are in place and

•

securely fastened before applying power.

Conguration

3 Conguration

VLT® BACnet/IP MCA 125

3.1 IP Settings

All IP-related parameters are located in parameter group 12-0* IP Settings:

Parameter 12-00 IP Address Assignment.

•

Parameter 12-01 IP Address.

•

Parameter 12-02 Subnet Mask.

•

Parameter 12-03 Default Gateway.

•

Parameter 12-04 DHCP Server.

•

Parameter 12-05 Lease Expires.

•

Parameter 12-06 Name Servers.

•

Parameter 12-07 Domain Name.

•

Parameter 12-08 Host Name.

•

Parameter 12-09 Physical Address.

•

The VLT® BACnet/IP MCA 125 oers several ways of IP address assignment.

Setting up the frequency converter with a manually assigned IP address:

Parameter Value

Parameter 12-00 IP Address

Assignment

Parameter 12-01 IP Address

Parameter 12-02 Subnet Mask

Parameter 12-03 Default

Gateway

Table 3.1 Set up Parameters for a Manually

Assigned IP address

1) Class C IP address example. Any valid IP address can be entered.

[0] MANUAL

192.168.0.xxx

255.255.255.0

Optional

NOTICE

A power cycle is necessary after setting the IP parameters manually.

Setting up the frequency converter with automatically (BOOTP/DHCP) assigned IP address or via the hardware switches:

Assigned IP address

When assigning the IP address by DHCP/BOOTP server or hardware switches, the assigned IP address and subnet mask can be readout in parameter 12-01 IP Address and

parameter 12-02 Subnet Mask. In parameter 12-04 DHCP Server, the IP address of the found DHCP or BOOTP server

is shown. For DHCP only: The remaining lease-time can be readout in parameter 12-05 Lease Expires.

Parameter 12-09 Physical Address reads out the MAC address of the option, which is also printed on the label of the option. If xed leases are used together with DHCP or BOOTP, the physical MAC address is linked with a xed IP address.

NOTICE

If no DHCP or BOOTP reply has been received after 4 attempts (for example, if the DHCP/BOOTP server has been powered o), the option returns to the last good known IP address.

Parameter 12-03 Default Gateway is optional and only used in routed networks.

Optional parameters used with domain name server systems:

Parameter 12-06 Name Servers.

•

Parameter 12-07 Domain Name.

•

Parameter 12-08 Host Name.

•

If DHCP or BOOTP is selected as IP address assignment, these parameters are read-only.

Ethernet Link Parameters

3.2

Parameter group 12-1* Ethernet Link Parameters contains ethernet link information:

Parameter 12-10 Link Status.

•

Parameter 12-11 Link Duration.

•

Parameter 12-12 Auto Negotiation.

•

Parameter 12-13 Link Speed.

•

Parameter 12-14 Link Duplex.

•

Parameter Value

Parameter 12-00 IP Address

Assignment

Parameter 12-01 IP Address Read only

Parameter 12-02 Subnet

Mask

Parameter 12-03 Default

Gateway

Table 3.2 Set up Parameters for Automatically

[1] DHCP

[2] BOOTP

Read only

NOTICE

The Ethernet link parameters are unique per port.

Parameter 12-10 Link Status and parameter 12-11 Link Duration show information on the link status per port. Parameter 12-10 Link Status shows [0] No Link or [1] Link

according to the status of the present port.

Conguration Programming Guide

Parameter 12-11 Link Duration shows the duration of the link on the present port. If the link is broken, the counter resets.

Parameter 12-12 Auto Negotiation is a feature that enables 2 connected Ethernet devices to select a common transmission parameter, such as speed and duplex mode. In this process, the connected devices rst share their capabilities for these parameters and then select the fastest transmission mode that they both support. By default, this function is enabled. Incapability between the connected devices may lead to decreased communication performance. To prevent decreased performance, disable auto negotiation.

If parameter 12-12 Auto Negotiation is set to [0] speed and duplex mode can be congured manually in

parameter 12-13 Link Speed and parameter 12-14 Link Duplex.

Parameter 12-13 Link Speed shows/sets the link speed per

port. If no link is present, none is shown.

Parameter 12-14 Link Duplex shows/sets the duplex mode per port:

Half duplex provides communication in both

•

directions, but only in 1 direction at a time (not simultaneously).

Full-duplex allows communication in both

•

directions, and unlike half duplex, allows for communication in both directions to happen simultaneously.

IP Trac

3.3

The use of ethernet-based network for industrial automation purposes calls for careful and thorough network design. Especially the use of active network components like switches and routers requires detailed know-how about the behavior of IP trac.

O, link

BACnet Settings

3.4

All BACnet-related parameters are located in parameter group 8-7* IP Settings and parameter group 12-7* BACnet.

Relevant parameters for parameter group 8-7* IP Settings:

Parameter 8-70 BACnet Device Instance.

•

Parameter 8-74 "I-Am" Service.

•

Parameter 8-75 Initialisation Password.

•

The VLT® BACnet/IP MCA 125 share these parameters with the built-in BACnet MS/TP interface. This means, that if the BACnet MS/TP and the MCA 125 BACnet/IP interface is connected at the same time, the settings interfaces. It is not possible to assign a unique device instance to each interface. Therefore, the frequency converter should only be connected to 1 network at a time for proper function of the BACnet.

Parameter 8-70 BACnet Device Instance sets the device instance of the frequency converter. Each device connected to the BACnet network must have a unique device instance. If 2 devices have the same device instance, the BACnet network goes into failure mode. When the DIP switches on the MCA 125 are set to on or

o, the option uses the value set in parameter 8-70 BACnet Device Instance. In all other cases, the option uses the

values set by the DIP as Device instance. If BACnet MS/TP is enabled on the RS485 port of the control card, the BACnet MS/TP protocol uses parameter 8-70 BACnet Device Instance. By doing so, the frequency converter can have 2 device instances.

Parameter 8-74 "I-Am" Service sets the time interval for sending the “I-Am” telegram to the BACnet network. Select whether the device should send the “I-Am” service message only at power-up, or continuously with an interval of approximately 1 minute.

aect both

3 3

Redundancy

Several redundancy protocols exist today, where spanning tree protocol (STP) and rapid spanning tree protocol (RSTP)

is frequently used in HVAC systems. The VLT® BACnet/IP MCA 125 can be installed in a network that uses STP or RSTP. The STP or RSTP is a feature that must be provided by the switch installed in front of the MCA 125. The MCA 125 does not play an active role in spanning tree, but it reacts on possible commands from the switch in front of the MCA 125.

In parameter 8-75 Initialisation Password, enter the password needed for execution of drive reinitialization from BACnet. The default password is “admin”.

Relevant parameters for parameter group 12-7* BACnet:

Parameter 12-70 BACnet Status.

•

Parameter 12-71 BACnet Datalink.

•

Parameter 12-72 BACnet UDP Port.

•

Parameter 12-75 BBMD IP Address.

•

Parameter 12-76 BBMD Port.

•

Parameter 12-77 BBMD Reg. Interval.

•

Parameter 12-78 Device ID

•

Parameter 12-79 Message Counter.

•

Conict Detection.

Conguration

VLT® BACnet/IP MCA 125

Parameter group 12-7* BACnet is only available if the frequency converter has a BACnet/IP interface installed. Setting up this parameter group is only possible in the MCA 125 BACnet/IP interface. If the BACnet/IP has to run via IP network (UDP), this parameter group has a default setting which allows it to be omitted in most cases.

Network Monitoring

3.5

In control systems, it is of highest priority that the

controller and network works correct. The VLT® BACnet/IP MCA 125 is designed to monitor the system for the availability of the controller and the network.

Parameter 12-70 BACnet Status shows the status of the MCA 125 BACnet/IP interface. For detailed information, see

chapter 5 Parameters.

Parameter 12-71 BACnet Datalink selects if the BACnet/IP

interface uses the BACnet Ethernet, BACnet/IP, or all datalink layer. If all datalinks are selected, the BACnet/IP autodetects which BACnet layer to use.

Parameter 12-72 BACnet UDP Port sets the port number used for the UDP connection. It is recommended to use a port number within the ranges of 47808–47826 and 49752–65535.

Parameter 12-75 BBMD IP Address sets the IP address of the remote BBMD management device. If set to 0.0.0.0, the foreign device function is disabled.

Typical faults detected by the MCA 125:

Power loss (controller or network components).

•

Cable faults (broken cable).

•

Malfunction of network components (partly).

•

Controller program stopped execution.

•

For indication of option directly, the option can activate warning 34 Fieldbus fault (W34). Warning 34 Fieldbus fault is suppressed for 60 s after power-up, to allow the controller to establish connection to the MCA 125.

For monitoring the communication to the controller, the drive has a timer which can be set to a value from 0.5–

18.000 s (5 hours). The timer starts the countdown when it receives a valid write command to 1 of the objects listed in Table 3.3:

eldbus faults detected by the eldbus

Parameter 12-76 BBMD Port sets the port number in the BBMD management device that handles the broadcast messages.

Parameter 12-77 BBMD Reg. Interval sets the registration interval in s, at which the frequency converter re-registers itself in the remote BBMD managing device.

Parameter 12-78 Device ID

time interval in minutes, where the MCA 125 sends a “Who has” with its own device instance. This detects if a device has been programmed to use the same device instance (faulty conguration). Warning 34 Fieldbus fault is issued until next detection.

Parameter 12-79 Message Counter contains an array of 5 counters. They can be used to verify that the BMS controller sends data to the frequency converter.

For information about the BACnet broadcast management device (BBMD), see chapter 6 Foreign Device.

Conict Detection species the

Object type Short name Object number

Analog output AO All

Analog value AV 1, 2, 31, 36, 41

Binary value BV 1, 2, 25, 26, 27

Multistage value MS 1

Table 3.3 Objects to Trigger Countdown

The controller must retrigger the timer within the time set in parameter 8-03 Control Timeout Time. If the controller fails to retrigger the timer within the timeframe, the frequency converter issues alarm 17 Ctrl.word TO, and executes 1 or more of the following commands:

Sets the motor into a

•

(parameter 8-04 Control Timeout Function for example: [5] Stop and trip).

Sets digital outputs to a well-dened state (for

•

example: On, O, no change).

Sets analog outputs to a well-dened state (for

•

example: 0–100% no change).

By this, the frequency converter reacts in a known way, when communication faults occur. When communication is re-established, the parameter 8-05 End-of-Timeout Function denes how the drive acts, when communication is restored.

well-dened state

Execute command in P 8-05

Remove A17

Alarm17 armed

Timer value=P8-03

Activate setting in P8-04,

outputs set to configured action.

Display A17

Decrease timer

Timer = 0

Receive

write command

to objects

Receive

write command to

objects

Alarm 17 handling

activated in P 8-04

(CTW time out)

Controller

writes to objects

130BF741.10

Y = Yes

N = No

Conguration Programming Guide

The parameters for monitoring communication are listed in Table 3.4:

ID Name Factory set-upNote

8-03 Control

60.0 s Application dependent

Timeout Time

8-04 Control

O Application dependent

Timeout

Function

8-05 End-of-Timeout

Function

Resume set-upIf set up change in

parameter 8-04 Control

Timeout Function

8-06 Reset Control

Do not reset No BACnet access

Timeout

5-30 Terminal 27, D

No operation Application dependent

Output

5-31 Terminal 29, D

No operation Application dependent

Output

5-40 Function

Relay1 & 2

6-51 Terminal 42

Alarm;

Application dependent

Running

No operation Application dependent

Output

Table 3.4 Parameters for Monitoring Communication

For I/O options, see the relevant parameters for the option.

3 3

The monitoring feature works from the simple state machine, as shown in Illustration 3.1:

Illustration 3.1 Simple State Machine

Conguration

Parameter 8-03 Control Timeout Time denes the maximum timeframe between writing to the present value of 1 of the objects that keep the alarm 17 Ctrl.word TO suppressed. The value set in parameter 8-03 Control Timeout Time should not exceed the timeframe which the application can tolerate without failing or leading to faults. It has been

proven that sending 3 write commands within the time set in parameter 8-03 Control Timeout Time gives a stable system. In noisy environments, the numbers can be set higher, but improving the installation should be done rst.

Example:

The cooling tower can accept loss of communication for up to 3 minutes. Parameter 8-03 Control Timeout Time is therefore set to 180 s. The controller is programmed to send a write command every 60 s and allows 2 commands to be lost before issuing alarm 17 Ctrl.word TO. When the fault occurs, the frequency converter is set to [4] Max. speed in parameter 8-04 Control Timeout Function. This setting generates maximum cooling, which is the best action for the application. The default value of parameter 8-05 End-of-Timeout Function is [1] Resume set-up, since no set-up change is selected in parameter 8-04 Control Timeout Function.

VLT® BACnet/IP MCA 125

+ 28 hidden pages