Vacon NX OPTC2 Manuel utilisateur
vacon nx
ac drives
optc2/c8
modbus/n2 option board
user manual
INDEX Document code: DPD00899A
Date 19.01.2012
1. GENERAL ...........................................................................................................................3
2. RS-485 OPTION BOARD TECHNICAL DATA ........................................................................ 4
2.1 General ......................................................................................................................................... 4
3. RS-485 FIELDBUS BOARD LAYOUT AND CONNECTIONS...................................................5
3.1 RS-485 OPTC2 option board ......................................................................................................... 5
3.2 RS-485 OPTC8 option board ......................................................................................................... 6
3.3 Grounding ..................................................................................................................................... 7
3.3.1 Grounding by clamping the cable to the converter frame.................................................7
3.3.2 Grounding only one point on the net..................................................................................9
3.3.3 Grounding jumper X1.......................................................................................................10
3.4 Bus terminal resistors................................................................................................................ 11
3.5 Bus Biasing................................................................................................................................. 12
3.6 LED indications........................................................................................................................... 13
4. INSTALLATION OF VACON NX RS-485 BOARD ................................................................. 14
5. COMMISSIONING.............................................................................................................. 16
5.1 Fieldbus board parameters........................................................................................................ 16
6. MODBUS........................................................................................................................... 19
6.1 Modbus RTU protocol, introduction............................................................................................ 19
6.1.1 Supported functions.........................................................................................................21
6.1.2 Exception responses........................................................................................................23
6.2 Modbus interface........................................................................................................................ 25
6.2.1 Modbus registers.............................................................................................................25
6.2.2 Process data ....................................................................................................................25
6.2.3 Process data in ................................................................................................................26
6.2.4 Process data out ..............................................................................................................27
6.2.5 Parameters......................................................................................................................30
6.2.6 Actual values....................................................................................................................30
6.2.7 Example messages..........................................................................................................31
6.3 Start-up test ............................................................................................................................... 33
7. METASYS N2..................................................................................................................... 34
7.1 Metasys N2 Protocol Introduction.............................................................................................. 34
7.2 Metasys N2 interface.................................................................................................................. 34
7.2.1 Analogue Input (AI) ..........................................................................................................34
7.2.2 Binary Input (BI)...............................................................................................................34
7.2.3 Analogue Output (AO).......................................................................................................35
7.2.4 Binary Output (BO)...........................................................................................................35
7.2.5 Internal Integer (ADI).......................................................................................................35
7.3 N2 POINT MAP............................................................................................................................ 36
7.3.1 Analogue Inputs (AI).........................................................................................................36
7.3.2 Binary Inputs (BI) .............................................................................................................37
7.3.3 Analogue Outputs (AO).....................................................................................................37
7.3.4 Binary Outputs (BO) .........................................................................................................38
7.3.5 Internal Integers (ADI) .....................................................................................................38
8. FAULT TRACKING............................................................................................................. 39
APPENDIX 1............................................................................................................................................ 40
general vacon •3
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1. GENERAL
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 con-
verter can then be controlled, monitored and programmed from the host system.
If you purchase your RS-485 Option Board separately, please note that it shall be installed in slot E on
the control board of the frequency converter.
WARNING!
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.
4 • vacon technical data
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2
2. RS-485 OPTION BOARD TECHNICAL DATA
2.1 General
Connections
Interface
OPTC2
: Pluggable connector (5.08mm)
OPTC8
: 9-pin DSUB connector (female)
Data transfer
method
RS-485, half-duplex
Transfer cable Twisted pair (1 pair and shield)
Electrical isolation 500 VDC
Communications
Modbus RTU
Metasys N2
As described in document “Modicon Modbus Protocol
Reference Guide”
Find it for example at: http://public.modicon.com/
As described in Metasys N2 System Protocol Specifica-
tion
Baud rate 300, 600, 1200, 2400, 4800, 9600, 19200 and 38400 kbaud
Addresses 1 to 247
Environment
Ambient operating
temperature
–10°C…55°C
Storing tempera-
ture
–40°C…60°C
Humidity <95%, no condensation allowed
Altitude Max. 1000 m
Vibration 0.5 G at 9…200 Hz
Safety
Fulfils EN50178 standard
Table 1. RS-485 technical data
layout and connections vacon • 5
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3. RS-485 FIELDBUS BOARD LAYOUT AND CONNECTIONS
Vacon RS-485 Fieldbus Board is connected to the fieldbus through either a 5-pin pluggable bus con-
nector (board OPTC2) or a 9-pin female sub-D-connector (board OPTC8).
The communication with the control board of the frequency converter takes place through the stan-
dard Vacon Interface Board Connector.
3.1 RS-485 OPTC2 option board
Figure 1. Vacon RS-485 option board OPTC2
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 2. OPTC2 bus connector signals
X4
X1
Bus connector Jumpers Interface board connector
Grounding plate
1
2
3
4
5
6 • vacon layout and connections
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3.2 RS-485 OPTC8 option board
Figure 2. Vacon RS-485 option board OPTC8
Signal
Connector
Description
Shield 1 Cable shield
RxD/TxD-N 3 Receive/ A
DGND 5 Data ground (reference potential for VP)
VP 6 Supply voltage – plus (5V)
RxD/TxD-P 8 Receive/ Transmit data/ B
Table 3. OPTC8 bus connector signals
X4
X1
Bus connector Jumpers Interface board connector
Grounding plate
12345
9 8 7 6
layout and connections vacon • 7
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3
3.3 Grounding
3.3.1
Grounding by clamping the cable to the converter frame
This manner of grounding is the most effective and especially recommended when the distances be-
tween 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.
Figure 3.
Figure 4.
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
1 2 3 4 5
B
A
Cut here
Strip this part
8 • vacon layout and connections
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Figure 5.
layout and connections vacon • 9
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3.3.2
Grounding 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 3.3.1. Other devices of the net just pass the shield.
We recommend you to use an Abico connector to fit the shields into the terminal.
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).
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 Figure 6.
Note: Do this for both bus cables.
Figure 6.
3Fix both the cables on the frame with the clamp. See Figure 7.
Figure 7.
1 2 3 4 5
B
A
Shield
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3.3.3
Grounding jumper X1
The Grounding jumper X1 on the OPTC8 is used for grounding selection. If position ON is selected it
means that the D-sub connector PIN1 is connected directly to ground. Selection of position OFF
means that PIN1 is connected to ground via an RC-filter. Jumper X1 has no effect on OPTC2.
Figure 8. Grounding jumper X1
X4
X1
ON
OFF
12345
9 8 7 6
Ce manuel convient aux modèles suivants
1
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