ABB ACS320 - Page 346

346 Fieldbus control
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
0OFF1
CONTROL
1READY TO
OPERATE
Enter READY TO OPERATE.
0 EMERGENCY
OFF
Drive ramps to stop according to
currently active deceleration ramp
(2203 or 2205)
Normal command sequence:
• Enter OFF1 ACTIVE.
• Proceed to READY TO SWITCH ON,
unless other interlocks (OFF2, OFF3)
are active.
1OFF2
CONTROL
1 OPERATING Continue operation (OFF2 inactive)
0 EMERGENCY
OFF
Drive coasts to stop.
Normal command sequence:
• Enter OFF2 ACTIVE.
• Proceed to SWITCHON INHIBITED.
2OFF3
CONTROL
1 OPERATING
Continue operation
(OFF3 inactive)
0 EMERGENCY
STOP
Drive stops within in time specified by
parameter 2208.
Normal command sequence:
• Enter OFF3 active.
• Proceed to switch on inhibited.
WARNING! Be sure motor and
driven equipment can be stopped
using this mode.
3 INHIBIT
OPERATION
1OPERATION
ENABLED
Enter OPERATION ENABLED (Note
the Run enable signal must be active.
See parameter 1601. If parameter 1601
is set to COMM, this bit also actives the
Run Enable signal.)
0OPERATION
INHIBITED
Inhibit operation. Enter OPERATION
INHIBITED.
4 Unused (ABB DRV LIM)
RAMP_OUT_
ZERO
(ABB DRV
FULL)
1NORMAL
OPERATION
Enter RAMP FUNCTION
GENERATOR:
ACCELERATION ENABLED.
0 RFG OUT ZERO Force ramp function generator output to
Zero. Drive ramps to stop (current and
DC voltage limits in force).
5 RAMP_HOLD 1 RFG OUT
ENABLED
Enable ramp function.
Enter RAMP FUNCTION
GENERATOR:
ACCELERATION ENABLED.
0 RFG OUT HOLD Halt ramping (Ramp Function
Generator output held)