C-40 Parameter Reference
AC30 series Variable Speed Drive
Encoder Feedback
1743
Setup::Motor Control::Control and Type
Parameters::Control Mode::Control
Mode
0
0:MAIN SPD FEEDBACK
1:SYSTEM BOARD SLOT 1
2:SYSTEM BOARD SLOT 2
3:NONE
STOPPED
This parameter will only become visible if Control Strategy is set to Vector Control and Control Type is set to Encoder Feedback, and
the drive is an AC30P/D
The parameter selects between encoder inputs :
MAIN SPD FEEDBACK : encoder option fitted or resolver option fitted. It corresponds to the option fitted in the I/O options. If selected,
the I/O option has to be set up in the corresponding option ( Resolver or Encoder )
SYSTEM BOARD SLOT 1 : encoder connected on SLOT1 if AC30D
encoder connected on AC30A
SYSTEM BOARD SLOT 2 : encoder connected on SLOT 2 if AC30D
NONE : no encoder connected – corresponds to SENSORLESS control selected
If an encoder is available, encoder feedback control would normally be the preferred choice as it gives better speed control and higher
Startup Alignment
1885
Setup::Motor Control::Control and Type
Parameters::Control Mode::Control
Mode
0
0:DISABLED
1:ONCE
2:ALWAYS
ALWAYS
Only available for PMAC motor if Encoder Feedback control type selected.
0:DISABLED : Start up aligment feature disabled. No action.
1: ONCE : Start up alignment run once from a cold start state.
At the end of the sequence, the drive is in Full Closed loop Vector control. A position Offset has been calculated and set up in 1808
PMAC Encoder Offset parameter.
Only a trip condition will reset the system to run again the sequence.
Changing this value will also reset the system and will cause the drive to run again the sequence on the next start.
2: ALWAYS : At each motor start ( Torque OFF to Torque ON condition ), the drive goes through the Pseudo PMAC sequence and a
new position offset is calculated, which will remain valid until next Torque OFF condition.