Daikin MD5 - Control Word; Status Word; Planning

Control Word
The CONTROL WORD is the principal means for controlling
the drive from a eldbus system. The eldbus controller
sends the CONTROL WORD to the drive. The drive switches
between states according to the bit-coded instructions in the
CONTROL WORD. Using the CONTROL WORD requires that:
• The drive is in remote (REM) control.
• The serial communication channel is dened as the
source for controlling commands from EXT1 (set using
parameters 1001 EXT1 COMMANDS and 1102 EXT1/
EXT2 SEL).
• The external plug-in eldbus adapter is activated:
— Parameter 9802 COMM PROT SEL = 4 (EXT FBA).
— The external plug-in eldbus adapter is congured to
use the drive prole mode or drive prole objects.
The content of the CONTROL WORD depends on the protocol/
prole used. See the user’s manual provided with the FBA
module and/or the Daikin drives prole technical data.
Status Word
The STATUS WORD is a 16-bit word containing status
information, sent by the drive to the eldbus controller. The
content of the STATUS WORD depends on the protocol/prole
used. See the user’s manual provided with the FBA module
and/or the Daikin drives prole technical data section.
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 congured for the Daikin Drives prole.
Reference scaling is eldbus type specic. See the user’s
manual provided with the FBA module and/or the following
sections as appropriate:
• Daikin drives prole technical data
• Generic prole technical data
Actual Values
Actual Values are 16-bit words containing information on
selected operations of the drive. Drive Actual Values (for
example, group 01 parameters) can be mapped to Input Words
using group 51 parameters (protocol-dependent, but typically
parameters 5104…5126).
NOTE: This is not required with MicroTech III controls.
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?
OM 1191 • MD5 VFD 68 www.DaikinApplied.com
fieldbUs adaPTer