Danfoss MG92K102 VLT BACnet HVAC Drive Installation Guide

Danfoss MG92K102 VLT BACnet HVAC Drive Installation Guide

Introduction

Purpose of the Manual
This installation guide provides information for the quick installation of a VLT® BACnet/IP MCA 125 option in a VLT® frequency converter.

The installation guide is intended for use by quali€ed personnel. Users are assumed to be familiar with:

• VLT® frequency converter.
• BACnet/IP technology.
• BMS controller that is used as a master in the system.

Read the instructions before installation and ensure that the instructions for safe installation are observed.

VLT® is a registered trademark.
BACnet® is a registered trademark of ASHRAE.

Additional Resources

Resources available for the frequency converters and optional equipment:

• The relevant frequency converter operating instructions provide 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 troubleshooting.
• 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 Sanford. See vlt- drives.danfoss.com/Support/TechnicalDocumentation/ for listings.

Product Overview

Intended Use

This installation guide relates to BACnet/IP interface. Ordering number:

• 134B1586 (conformal coated).

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

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

• VLT® HVAC Drive FC 102

Items Supplied
When the €eldbus option is not factory-mounted, the following items are supplied:

• Fieldbus option
• LCP cradle
• Front covers (in various sizes)
• Stickers
• Accessories bag
• Strain relief (only for A1 and A2 enclosures)
• Installation guide

**Approvals and Certifications

** More approvals and certi€cations are available. For more information, contact a local Sanford partner.

Disposal
Do not dispose of equipment containing electrical components together with domestic waste.
Collect it separately in accordance with local and currently valid legislation.

Symbols, Abbreviations, and Conventions **

**

Table 1.1 Symbols and Abbreviations

Conventions

• Numbered lists indicate procedures.
• Bullet lists indicate other information and description of illustrations.
• Italicized text indicates the following:
  • Cross-reference.
  • Link.
  • Parameter name.
  • Parameter option.
  • Parameter group name.
• All dimensions are in metric values (imperial values in brackets).
• An asterisk (*) indicates the default setting of a parameter.

Safety

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.

Qualified Personnel
Correct and reliable transport, storage, installation, operation, and maintenance are required for the trouble free and safe operation of the frequency converter. Only qualified personnel are allowed to install or operate this equipment.

Qualified personnel are defined as trained staff, who are authorised to install, commission, and maintain equipment, systems, and circuits in accordance with pertinent laws and regulations. Also, the qualified personnel must be familiar with the instructions and safety measures described in this installation guide.

Safety Precautions

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 qualified personnel can result in death or serious injury.

• Only qualified personnel must perform installation, start-up, and maintenance.

WARNING

When the frequency converter is connected to AC mains, DC supply, or load sharing, the motor may 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 field bus command, an input reference signal from the LCP or LOP, via remote operation using MCT 10 Set-up Software, or after a clear UNINTENDED START default condition.

To prevent unintended motor start:

• Press [Off/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 off.
Failure to wait the specified 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 instructions 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.

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 certified electrical installer.

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

• Ensure that only trained and qualified personnel perform installation, start-up, and maintenance.
• Ensure that electrical work conforms to national and local electrical codes.
• Follow the procedures in this guide.

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.

Installation

Safety Instructions
See chapter 2 Safety for general safety instructions.

EMC-compliant Installation
To obtain an EMC-compliant installation, follow the instructions provided in the relevant frequency converter operating instructions and design guide. Refer to the BACnet/IP master manual from the BMS supplier for further installation guidelines.

Grounding

• Ensure that all stations connected to the €Elbrus network are connected to the same ground potential. When there are long distances between the stations in a €Elbrus network, connect the individual station to the same ground potential. Install equalising cables between the system components.
• Establish a grounding connection with low HF impedance, for example by mounting the frequency converter on a conductive backplate.
• Keep the ground wire connections as short as possible.
• Electrical contact between the cable screen and the frequency converter enclosure or ground is not allowed in Ethernet installations. The RJ45 connector of the Ethernet interface provides an electrical path for the burst transient to ground.
• To reduce burst transient, use high-strand wire.

Cable Routing

NOTICE
EMC INTERFERENCE
Use shielded cables for motor and control wiring, and separate cables for field bus communication, motor wiring, and brake resistor. Failure to isolate field bus communication, motor, and brake resistor cables can result in unintended behaviour or reduced performance. Minimum 200 mm (7.9 in) clearance between power, motor, and control cables is required. For power sizes above 315 kW (450 hp), increase the minimum distance to 500 mm (20 in).

NOTICE
When the eldbus cable crosses a motor cable or a brake resistor cable, ensure that the cables cross at an angle of 90°.

Illustration 3.1 Cable Routing

Topology

Topology Types
The BACnet/IP MCA 125 option features a built-in Ethernet switch with 2 Ethernet RJ45 connectors. Where the enclosure protection rating if higher than IP2x, the frequency converter may be equipped with two M12 connectors instead.
The module enables the connection of several BACnet/IP options in a line topology as an alternative to a traditional star topology.

The 2 ports are equal. If only 1 connector is used, either port can be used.

**Star Topology

Illustration 3.2 Star Topology
**

Line Topology
In many installations, line topology enables simpler cabling and the use of smaller or fewer Ethernet switches. The BACnet/IP interface supports line topology with its 2 ports and built-in Ethernet switch.

When line topology is used, take precautions to avoid timeout in the BMS when more than 8 frequency converters are installed in series. Each frequency converter in the network adds a small delay to the communication due to the built-in Ethernet switch. When the update time is too short, the delay can lead to a timeout in the BMS.

Set the update time as shown in Table 3.1. The numbers given are typical values and can vary from installation to installation.

Numbers of frequency converters connected in series| Minimum update time [ms]
---|---
<8| 2
8–16| 4
16–32| 8

32| Large jitter can occur.

Table 3.1 Minimum Update Time

Illustration 3.3 Line Topology

NOTICE
In line topology, activate the built-in switch by powering all frequency converters, either by mains or a 24 V DC option card.

NOTICE
Installing frequency converters of di‚erent power sizes in line topology may result in unwanted power-o‚ behavior when using control word timeout (parameter 8-02 Control Word Source to parameter 8-06 Reset Control Word Timeout). Mount the frequency converters with the longest discharge time rst in the line topology. In normal operation, the frequency converters with bigger power sizes have a longer discharge time.

Ring/Redundant Topology

Illustration 3.4 Ring/Redundant Topology

Ring topology can increase the availability of an Ethernet network.

For ring topology:

• Install a special switch (redundancy manager) between the BMS controller and the frequency converters.
• Configure the redundancy manager switch to clearly de€ne the ports that connect to the ring.

When the ring is closed, the main redundancy manager tests the ring for detects. If the redundancy manager  detects a fault in the ring, it recon€gures the ring into 2lines instead. The transition time from ring topology into 2  lines can vary from 200 ms up to several secondsdepending on the components installed in the ring. Set the timing of the BMS controller to ensure that the transition time does not lead to a timeout fault.

NOTICE
For ring/redundant topology, ensure that the redundancy manager switch supports the detection of loss of line topology. The switch inside the BACnet/IP interface does not support this detection, as the redundancy manager has to perform this task.

Recommended Design Rules

• Pay special attention to active network components when designing an Ethernet network.
• For line topology, a small delay is added with each additional switch in the line. For more information, see Table 3.1.
• Do not connect more than 32 frequency converters in series. To prevent unstable or faulty communication, set the timing, if this limit is exceeded.
  
  Illustration 3.5 Recommended Design Rules

Mounting

1. Check whether the field-bus option is already mounted in the frequency converter. If the option is already mounted, go to step 6.
2. Remove the LCP or blind cover from the frequency converter.
3. Use a screwdriver to remove the front cover and the LCP cradle.
4. Mount the feldspar option with the Ethernet port facing upwards for top cable entry (see Illustration 3.7), or with the Ethernet port facing downwards for bottom cable entry (see Illustration 3.8).
5. Remove the knockout plate from the new LCP cradle.
6. Mount the new LCP cradle.
   1| LCP
   ---|---
   2| LCP cradle
   3| Fieldbus option

Illustration 3.6 Exploded View

Illustration 3.7 Option Mounted with the Ethernet Port Facing Upward (A1–A3 Enclosures)

Illustration 3.8 Option Mounted with the Ethernet Port Facing Downward (A4–A5, B, C, D, E, F Enclosures)

Illustration 3.9 Ethernet Connectors

Electrical Installation

Cabling Requirements

• Select cables suitable for Ethernet data transmission. Normally, CAT5e and CAT6 cables are recommended for industrial applications.
• Both types are available as unshielded twisted pair and shielded twisted pair. Shielded cables are recommended for use in industrial environments and with frequency converters.
• A maximum cable length of 100 m (328 ft) is allowed between the switches.
• Use optical €bers for gapping longer distances and providing galvanic isolation.

Wiring Procedures

Wiring procedure for enclosure types A1–A3

1. Mount the pre-con€gured cable wires with the connectors on the €eldbus option. For A1 and A2 enclosures, mount the supplied strain relief on top of the frequency converter with 2 screws, as shown in Illustration 3.10. For cable speci€cations, refer to chapter 3.7.1 Cabling Requirements.
2. Position the cable between the spring loaded metal clamps to establish mechanical €xation and electrical contact between the cable and ground.
   
   Illustration 3.10 Wiring for Enclosure Types A1–A3

Wiring procedure for enclosure types A4–A5, B1–B4, and C1–C4

1. Push the cable through the cable glands.
2. Mount the pre-configured cable wires with the connectors on the €eldbus option. For cable specifications, refer to chapter 3.7.1 Cabling Requirements.
3. Fix the cable to the metal base plate using the springs, see Illustration 3.11. 4. Tighten the cable glands securely
   
   Illustration 3.11 Wiring for Enclosure Types A4–A5, B1–B4, and C1–C4

Wiring procedure for enclosure types D, E, and F

1. Mount the per-configured cable wires with the connectors on the field bus option. For cable specifications, refer to chapter 3.7.1 Cabling Requirements.
2. Fix the cable to the metal base plate using the springs, see Illustration 3.12.
3. Tie down the cable and route it with other control wires inside the unit, see Illustration 3.12
   
   Illustration 3.12 Wiring for Enclosure Types D, E, and F

NOTICE
Do not strip the Ethernet cable. Do not ground it via the strain relief plate. Ground the shielded Ethernet cables through the RJ45 connector on the BACnet/IP interface.

Reassembling the Cover

1. Mount the new front cover and the LCP.
2. Attach the sticker with the correct product name to the front cover.

Applying Power
Follow the instructions in the frequency converter Operating Instructions to commission the frequency converter. The frequency converter automatically detects the BACnet/IP interface. A new parameter group (Group 8-7) appears.

Checking Network Cabling

NOTICE
After installing the BACnet/IP interface, be aware of the following parameter settings:

• Parameter 8-01 Control Site: [2] Control word only or [0] Digital and control word
• Parameter 8-02 Control Word Source: [3] Option A.
• Parameter 8-03 Control Timeout Time.
• Parameter 8-70 BACnet Device Instance.
• Parameter 12-71 BACnet Datalink.

If BACnet/IP is used the following parameters must be set correctly:

• Parameter 12-00 IP Address Assignment.
• Parameter 12-01 IP Address (if parameter 12-00 IP Address Assignment is set to [0] MANUAL).
• Parameter 12-02 Subnet Mask (if parameter 12-00 IP Address Assignment is set to [0] MANUAL).

Troubleshooting

Warnings and Alarms

NOTICE
Refer to the relevant frequency converter Operating Instructions for an overview of warning and alarm types, and for the full list of warnings and alarms.

Alarm word and warning word are shown in the display in Hex format. When there is more than 1 warning or alarm, the sum of all warnings or alarms is shown. Warning word and alarm word are shown in parameter 16-90 Alarm Word to parameter 16-95 Ext. Status Word 2.

LED Status
The BACnet/IP interface has 3 varicoloured LEDs that allow fast and detailed diagnosis. Each LED is linked to its unique part of the BACnet/IP interface, see Table 4.1

Illustration 4.1 Overview of BACnet/IP Interface

Table 4.1 LED Label

configured.
Green:| Solid green| The link is OK and the IP address is configured.
Red:| Flashing red| Fault:•         IP address conflict•         Device ID error
Red:| Solid red| Alarm
State| LED| Description
---|---|---
Power up| Red/green:| Solid red/green| The device is powering up (after MS LED).
Running| Green:| Flashing green| No IP address is configured.
Green:| Solid green| The link is active and the IP address is configured.
Red:| Solid red| The IP address assigned to the device is already inuse.
Off| Off| There is no link or the link has been removed aftervalid IP address has been entered.

Table 4.3 NS1+NS2: Network Status (1 per Port)

No Communication with the Frequency Converter

Check: Link status
The status of the Ethernet link can be directly identi€ed using the LEDs, when no BACnet connection is established.
Use parameter 12-10 Link Status to verify presence of the link.
Use parameter 12-11 Link Duration to verify that the link is steadily present.
The parameter shows the duration of the present link, and is preset to 00:00:00:00 when the link is broken.

Check: Cabling
In rare cases of cabling reconfiguration, the option may show the presence of a link but no communication is running. Exchange the cable if in doubt.

Check: IP address
Verify that the option has a valid IP address (refer to parameter 12-01 IP Address). When the option has identified  a duplicate IP Address, NS LEDs are steady red. When the option is set up for BOOTP or DHCP, verify that a BOOTP or DHCP Server is connected in parameter 12-04 DHCP Server. If no server is connected, the parameter shows: 000.000.000.000.

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without sub sequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

References

• Global AC drive manufacturer - Danfoss Drives | Danfoss
• Global AC drive manufacturer - Danfoss Drives | Danfoss
• Global AC drive manufacturer - Danfoss Drives | Danfoss

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