Danfoss vacon nx optcj User guide

VACON NX

AC DRIVES

OPTCJ

BACNET OPTION BOARD

USER MANUAL

INDEX

		Document code: DPD00901A
		Date edited: 19.01.2012
1.	General info........................................................................................................................		3
2.	BACnet Option Board Technical data .................................................................................		4
2.1	System Software versions........................................................................................................		5
3.	BACnet FIELDBUS BOARD LAYOUT AND CONNECTIONS...................................................		6
4.	Grounding cable shield ......................................................................................................		7
4.1	Grounding by clamping the cable to the converter frame (recommended).............................		7
4.2	Grounding only one point on the net ........................................................................................		8
4.3	Bus terminal resistors .............................................................................................................		9
4.4	Bus Biasing.............................................................................................................................		10
5.	LED indications ................................................................................................................		11
6.	INSTALLATION OF VACON NX BACnet BOARD .................................................................		12
7.	COMMISSIONING..............................................................................................................		14
7.1	Fieldbus board parameters....................................................................................................		14
7.2	Expander board menu (M7)....................................................................................................		14
7.3	BACnet parameters................................................................................................................		14
	7.3.1 MS/TP MAC address (P7.x.1.1).......................................................................................		15
	7.3.2	Baud rate (P7.x.1.2)........................................................................................................	15
	7.3.3	Instance number (P7.x.1.3).............................................................................................	15
	7.3.4	Communication status (V7.x.2.1)....................................................................................	16
	7.3.5	Baud Rate (V7.x.2.2)........................................................................................................	16
	7.3.6	Fault (V7.x.2.3)...............................................................................................................	16
	7.3.7	Index Nr. (V7.x.2.4).........................................................................................................	16
7.4	ANNEX - PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT (NORMATIVE)......		17
7.5	Object Map..............................................................................................................................		19
	7.5.1	Binary Value Object ........................................................................................................	20
	7.5.2	Analog Value Object........................................................................................................	21
8.	FAULT TRACKING.............................................................................................................		23

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GENERAL

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1.GENERAL INFO

Instead of sending and receiving information to and from frequency converters through I/O, you can connect them to a fieldbus.

Vacon NX frequency converters can be connected to the RS-485 bus using a fieldbus board. The converter can then be controlled, monitored and programmed from the host system.

BACnet is also known by names Direct Digital Control Systems and Building Management Systems. BACnet technology is used mostly in building automation, lightning control, air conditioning and in heating automation. The protocol is an upper level net protocol suitable for large building automation projects.

BACnet stands for Building Automation and Control Network. BACnet is a true non-propriatery open protocol communication standard conceived by a consortium of building management, system users and manufacturers.

If you purchase your BACnet option board separately, please note that it shall be installed in slot E on the control board of the frequency converter.

Internal components and circuit boards are at high potential when the frequency converter is connected to the power source. This voltage is extremely dangerous and may cause death or severe injury if you come into contact with it.

WARNING!

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TECHNICAL DATA

2.BACNET OPTION BOARD TECHNICAL DATA

	Connections	Interface	OPT-CJ: Pluggable connector (5.08mm)
		Data transfer	RS-485 MS/TP, half-duplex
		method
		Transfer cable	Twisted pair (1 pair and shield)
		Electrical isolation	500 VDC
	Communications	BACnet MS/TP	As described in ANSI/ASHRAE Standards 135-2004
		Baud rate	9600, 19200, 38400 and 76800 baud (supports autobaud
			detection)
		MAC Addresses	1 to 127
	Environment	Ambient operating	–10°C…55°C
		temperature
		Storing	–40°C…60°C
		temperature
		Humidity	<95%, no condensation allowed
		Altitude	Max. 1000 m
		Vibration	0.5 G at 9…200 Hz
	Safety		Fulfils EN50178 standard
Table 2-1. BACnet technical data

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LAYOUT AND CONNECTIONS

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2.1System Software versions

OPT-CJ BACnet option board is supported from system software versions:

•NXL NXL00005V149.VCN

•NXS NXS00001V161.VCN

•NXP NXP00002V160.VCN

Autobaud detection and BACnet specific fault codes (readable from panel) are added from system software versions:

•NXL NXL00005V248.VCN

•NXS NXS00001V163.VCN

•NXP NXP00002V162.VCN

Communication timeout is available from system SW versions. When not supported, the default is 10 seconds.

•NXL NXL00005V254.VCN

•NXS NXS00001V167.VCN

•NXP NXP00002V168.VCN

OPT-CJ software version OPTCJ_10522V009 and newer:

New baud rate 76800 from software versions:

•NXL: NXL00005V257.VCN

•NXS: NXS00001V170.VCN

•NXP: NXP00002V171.VCN

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TECHNICAL DATA

3.BACNET FIELDBUS BOARD LAYOUT AND CONNECTIONS

Vacon BACnet option board is connected to the fieldbus through a 5-pin pluggable bus connector. The communication with the control board of the frequency converter takes place through the standard Vacon Interface Board Connector.

1
2
3	X4
4
5
	X1
Bus connector	Jumpers	Interface board connector
	Grounding plate
Figure 3-1. Vacon BACnet option board OPT-CJ

Signal	Connector		Description
NC*	1*		No connection
VP	2		Supply voltage – plus (5V)
RxD/TxD –N	3		Receive/Transmit data – A
RxD/TxD –P	4		Receive/Transmit data – B
DGND	5		Data ground (reference potential for VP)
*You can use this pin (1) to bypass the cable shield to the next slave
Table 3-1. OPT-CJ bus connector signals

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GROUNDING CABLE SHIELD

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4.GROUNDING CABLE SHIELD

4.1Grounding by clamping the cable to the converter frame (recommended)

This manner of grounding is the most effective and especially recommended when the distances between the devices are relatively short or if the device is the last device on the net.

Note: Normally, the option board has already been installed in slot D or slot E of the control board. It is not necessary to detach the whole board for the grounding of the bus cable shield. Just detach the terminal block.

1Strip about 5 cm of the cable and cut off the grey cable shield.

Remember to do this for both bus cables (except for the last device). See pictures below.

2Leave no more than 1 cm of the cable outside the terminal block and strip the data cables at about 0.5 cm to fit in the terminals. See pictures below.

Note: Do this for both bus cables.

Strip this part

Cut here

Figure 4-1.

1 2 3 4 5

A B

Figure 4-2.

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GROUNDING CABLE SHIELD

3Insert the data cables of both cables into terminals #3 (Line B) and #4 (Line A).

4Strip the cable at such a distance from the terminal that you can fix it to the frame with the grounding clamp. See pictures below:

Figure 4-3.

4.2Grounding only one point on the net

In this manner of grounding, the shield is connected to ground only at the last device on the net in the same way as described in chapter 4.1. Other devices of the net just pass the shield.

We recommend you to use an Abico connector to fit the shields into the terminal.

1.Strip about 5 cm of the cable and cut off the grey cable shield. Remember to do this for both bus cables (except for the last device).

2.Leave no more than 1 cm of the cable outside the terminal block and strip the data cable at about 0.5 cm to fit in the terminals. See Figure 4-4.

1 2 3 4 5

Shield A B

Figure 4-5.

Note! Do this for both cables.

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