ABB ACH580 Series, User Manual

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146 ACH580 E-Clipse bypass and packaged drive user manual
Embedded fieldbus
ABB control profiles technical data – Drive
Overview
ABB drives profile
The ABB Drives profile provides a standard profile that can be used with embedded
Modbus. Two implementations of the ABB drives profile are available:
• ABB DRV LIM – The primary (and default) profile is the ABB DRV LIM profile,
which standardizes the control interface with ACH580 and ACH550 drive
products.
• ABB DRV FULL – This profile standardizes the control interface with the ACH580
and ACH550 drive products.
Except as noted, the following ABB drives profile descriptions apply to both
implementations.
DCU profile
The DCU profile extends the control and status interface to 32 bits.
Control Word
The CONTROL WORD is the principal means for controlling the bypass from a
fieldbus system. The fieldbus master station sends the CONTROL WORD to the
system. The drive switches between states according to the bit-coded instructions in
the CONTROL WORD. Using the CONTROL WORD (ABB drives profile version)
requires that:
• The drive is in remote (REM) control.
• The serial communication channel used is configured to use an ABB control
profile. For example, to use the control profile ABB DRV FULL, requires both
bypass parameter 9802 COMM PROT SEL = 1 (STD MODBUS), and bypass
parameter 5825 EFB CTRL PROFILE = 2 (ABB DRV FULL).
ABB drives profile
The following table and the state diagram later in this sub-section describe the
CONTROL WORD
content for the ABB Drives Profile.
ABB Drives Profile (EFB) CONTROL WORD
Bit Name Value
Commanded
State
Comments
0 OFF1
CONTROL
1 READY TO
OPERATE
Enter READY TO OPERATE
0 EMERGENCY
OFF
Drive ramps to stop according to currently
active deceleration ramp (22.13 or 22.15 if
control mode is vector. 28.73 or 28.75 if
control mode is scalar)
Normal command sequence:
• Enter OFF1 ACTIVE
• Proceed to READY TO SWITCH ON,
unless other interlocks (OFF2, OFF3)
are active.