Danfoss vacon optbk User guide

vacon

ac drives

optbk

as-interface option board

user manual

®

vacon • 1

INDEX

Document code(Original Instructions): DPD01311B

Revision release date: 22.5.15

1. OPTBK AS-interface board................................................................................2

1.1 General................................................................................................................................2

1.2 Technical data .....................................................................................................................2

1.2.1 AS-interface technical data ................................................................................................3

1.2.2 AS-i board layout and connections .....................................................................................4

1.2.3 Physical media ....................................................................................................................5

1.2.4 LED indications ...................................................................................................................6

2. Option board installation ..................................................................................7

2.1 Vacon 100 ............................................................................................................................7

2.2 Vacon 100 X .......................................................................................................................10

2.3 Vacon 20 X .........................................................................................................................14

Rev. B

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vacon • 2 OPTBK AS-interface board

1. OPTBK AS-INTERFACE BOARD

1.1 General

The Actuator sensor Interface (AS-Interface or AS-i) is an economical system for the lower auto­mation level. It is not a universal Fieldbus for all areas of automation. The AS-Interface is optimized
to network binary sensors and actuators to the higher control level.

The AS-Interface is an intelligent form of cabling rather than a true fieldbus. It does not replace
complex networks. Because the system has simple and cost-effective solutions, it suits well for the
Sensor/Actuator Level. The cost-effective, rugged AS-Interface components are especially suited
for use in harsh industrial environments. AS-i products are certified by the AS-International user
organization that guarantees worldwide compatibility. Vacon is AS-International member since
January 2013.

The installation of AS-interface is both easy and cost-effective. Because the AS-interface is a sim­ple, defined electromechanical interface, no special expertise is necessary in the installation. It has
a quick "Snap and Go" cable penetration system. The installation is easy because the AS-interface
has freely selectable network topology. Also the configuration is easy. Only some prior knowlegde
is necessary for the assembly, which reduces downtime when faults occur.

The fault susceptibility of other systems often results in assembly delays, so the AS-Interface was
consciously designed to reduce error sources. The special profile of the AS-Interface cable pre­vents reversal of the poles when connecting devices.

1.2 Technical data

VACON® AC drives can be connected to the ASI bus system using a OPTBK AS-I board.

Internal components and circuit boards are at high potential when the AC drive 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.

The relay outputs and other I/O-terminals may have a dangerous control voltage
present even when the AC drive is disconnected from mains.

It is not allowed to add or replace option boards on an AC drive with
the power switched on. This may damage the boards.

NOTE! When experiencing problems with AS-I functionalities, please contact Fieldbus@va­con.com.

1

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OPTBK AS-interface board vacon • 3

1.2.1 AS-interface technical data

Master/Slave Communication System
AS-Interface profile S-7.A.7 (AS-i specifications 3.0)

Network type:

Topolo gy: Very flexible with Line, Bus, Star or Tree Topology

Installation:

Max. current
consumption:

Data Rate: 167 kBit/s
Max. Stations: 1 Master and up to 62 Slaves
Data: each Slave: - 4 bit digital Input and 4 bit digital Output Data

Network Features:

User Organization: AS-International

IO code 7
ID code A
ID1 code 7
ID2 code 7

Special (yellow) unshielded cable with 2 wires providing data and 30 V.
Alternatively data and power on separate cables 100 m length per
Segment, extendible up to 300 m with Repeaters

150 mA

Data values become refreshed at the slave in less than 21 ms; all 4
output bits operate simultaneously

Table 1. AS-interface technical data

The AS-interface is a simple master-to-slave structure. The master controls all time and network
traffic. The protocol is embedded in the hardware. There are no configuration files to maintain. All
nodes are “AB Slaves”. The slaves have a maximum of 4 discrete input bits and 4 discrete output
bits. The address range is 1A-31A and 1B-31B, with 0 being reserved for new incoming slaves. “0”
is the default address set by manufacturers when a slave leaves the factory.

The board can be configured with the bits as the following table:

Parameter bits

Communication monitoring (Watchdog)
P0 = 0 monitoring = off, the outputs maintain the status if communi-

P0

P1

P2

P3 Not used

cation fails (default setting)
P0 = 1 monitoring = on, i.e. if communication fails, the outputs are
deenergised

Input filter
P1 = 0 input filter on, pulse suppression (default setting)
P1 = 1 input filter off

Synchronous mode
P2 = 0 synchronous mode on (default setting)
P2 = 1 synchronous mode off

Table 2. Description of parameter bit function.

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1

vacon • 4 OPTBK AS-interface board

1.2.2 AS-i board layout and connections

Both data and power are supplied on the two-wire cable. The DC power carries the AS-interface sig­nal. The AS-interface signal and the voltage regulating circuitry of the power supply must be sep­arated.

Do not ground the AS-interface negative (ASI N). Grounding the signal lines results in poor commu­nication or completely lost communication. The typical AS-interface media is not shielded. If shield­ing is necessary for the application, ground the shield in only one place.

The AS-interface power supply provides voltages in the 30VDC range (29.5-31.6 VDC). It is higher
than the industry standard nominal 24VDC to compensate for the voltage drop on the line as well
as the drop through the AS-interface IC chip.

Figure 1. OPTBK AS-interface option board.

OPTBK AS-interface terminals

Terminal Signal Technical information

1 ASI P AS-interface +

2 ASI N AS-interface -

ASI Supply P

3

ASI Supply N GND of Auxiliary output voltage

4

Table 3. OPTBK AS-Interface terminals

Auxiliary output voltage (ASi voltage input - max 2.4V at
maximum output current)

1

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OPTBK AS-interface board vacon • 5

A

A

2(N.C.)

Male M12 Female M12

4(N.C.)

Brown

Blue

1.2.3 Physical media

AS-interface is available in both flat cable with IDC (Insulation Displacement Cable) connectors or
round cable with industry standard M12 EN50 044 connectors.

SI P

SI N

Figure 2.AS-interface Flat Cable. Right figure shown with piercing teeth.

Cross section of the wires

EU US

2 x 15 mm

2

2 x 18 AWG

Table 4. Cross sectional size of the wires.

1 - ASI P

3 - ASI N

Figure 3. AS-interface round cable with industry standard M12 EN50 044 connector.

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1

vacon • 6 OPTBK AS-interface board

1.2.4 LED indications

There are two LED indications next to the connector on the bottom side of the option board as show
in the picture below.

Figure 4. LED position on the option board.

LED indications

Green LED is: Red LED is: Meaning Note

OFF OFF

ON OFF
ON ON

Flashing ON

ON Flashing

Power OFF No power supply available

Normal Operation Data communication is established

No data exchange IC is waiting for a Write_Parameter request.

No data exchange
(Address = 0)

Periphery
Fault

Table 5. LED indications.

Slave is waiting for address assignment.
Data Port communication is not possible.

Communication Error

1

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Option board installation vacon • 7

M4x55

9174.emf

3023.emf

2. OPTION BOARD INSTALLATION

2.1 Vacon 100

Open the cover of the AC drive.

1

To get access to the option board slots, open the cover of the control unit.

2

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2

vacon • 8 Option board installation

DE

3024.emf

9068.emf

Install the option board into correct slot D or E.

The option board has a slot coding, and thus it is not possible to install the option
board in an incorrect slot.

3

4

5

Close the cover of the control unit.

In IP21, cut free the opening on the cover of the AC drive for the AS-I cable.

In IP54, cut a hole in a grommet and move the cable through it. Make the connec­tion tight.

2

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Option board installation vacon • 9

9202.emf

Fieldbus
cables

6

7

8

Install AS-interface cables and other cables.

Close the cover of the AC drive.

Pull the AS-interface cable to the side. Move the cable away from the mains cable
and the motor cable.

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2

vacon • 10 Option board installation

11638_00

2.2 Vacon 100 X

Open the cover of the AC drive.

1

2

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Option board installation vacon • 11

11639_00

To get access to the option board slots, remove the screws and open the cover of
the control unit.

2

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2

vacon • 12 Option board installation

DE

11640_00

11641_00

Install the option board into the correct slot, D or E.

3

4

5

Close the option board cover.

Remove the cable entry plate. If you
installed the option board in the slot
D, use the cable entry plate on the
right side. If you installed the option
board in the slot E, use the cable en­try plate on the left side.

NOTE! The cable entry plate at the
bottom of the drive is used only for
mains and motor cables.

2

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Option board installation vacon • 13

11642_00

6

7

Open the necessary holes in the cable entry plate. Do not open the other holes.
See the Vacon 100X Installation Manual for the dimensions of the holes.

Attach a cable gland on the hole in the ca­ble entry plate. Pull the AS-interface cable
through the hole.

NOTE! The AS-interface cable must go
through the correct cable entry plate to
avoid going near the motor cable.

8

9

Put the cable entry plate back.

Close the cover of the AC drive.

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2

vacon • 14 Option board installation

11643_00

7089_00

2.3 Vacon 20 X

NOTE! It is not allowed to add or replace option boards or fieldbus boards on an AC
drive with the power switched on. This may damage the boards.

The relay outputs and other I/O-terminals may have a dangerous control voltage
present even when the drive is disconnected from mains.

Open the cover of the drive.

1

2

Remove the option slot cover.

2

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Option board installation vacon • 15

7090_00

7091_007091_00

3

NOTE: Incompatible boards cannot be installed on Vacon 20X. Compatible boards

have a slot coding that enable the placing of the board (see above)

4

Install the option board into the slot as shown in the picture below.

Mount the option slot cover.

5

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2

Find your nearest Vacon office

on the Internet at:

www.vacon.com

Manual authoring:
[e-mail]

Vacon Plc.
Runsorintie 7
65380 Vaasa
Finland

Subject to change without prior notice
© 2015 Vacon Plc.

Document ID:

Rev. B

Sales code: DOC-OPTBK+DLUK