ABB RDNA-01 Manual do Utilizador descarregar pdf (Página 233)

ACS550-01/U1 User’s Manual 233

Fieldbus adapter

• The serial communication channel is defined as the source for controlling

commands from EXT1 (set using parameters 1001 EXT1 COMMANDS and 1102

EXT1/EXT2 SEL).

• The external plug-in fieldbus adapter is activated:

– Parameter 9802

COMM PROT SEL = 4 (EXT FBA).

– The external plug-in fieldbus adapter is configured to use the drive profile

mode or drive profile objects.

The content of the

CONTROL WORD depends on the protocol/profile used. See the

user’s manual provided with the FBA module and/or section ABB Drives profile

technical data on page 242.

Status Word

The

STATUS WORD is a 16-bit word containing status information, sent by the drive to

the fieldbus controller. The content of the

STATUS WORD depends on the protocol/

profile used. See the user’s manual provided with the FBA module and/or section

ABB Drives profile technical data on page 242.

Reference

The contents of each

REFERENCE word:

• can be used, as speed or frequency reference

• is a 16-bit word comprised of a sign bit and a 15-bit integer

• Negative references (indicating reversed rotation direction) are indicated by the

two’s complement of the corresponding positive reference value.

The use of a second reference (REF2) is supported only when a protocol is

configured for the ABB Drives profile.

Reference scaling is fieldbus type specific. See the user’s manual provided with the

FBA module and/or the following sections as appropriate:

• Reference scaling on page 246 (ABB Drives profile technical data)

• Reference scaling on page 250 (Generic profile technical data).

Actual Values

Actual Values are 16-bit words containing information on selected operations of the

drive. Drive Actual Values (for example, Group 10: START/STOP/DIR parameters)

can be mapped to Input Words using Group 51: EXT COMM MODULE parameters

(protocol-dependent, but typically parameters 5104…5126).

Planning

Network planning should address the following questions:

• What types and quantities of devices must be connected to the network?

• What control information must be sent down to the drives?

• What feedback information must be sent from the drives to the controlling

system?

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