Parker AC30 series, User Manual

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D-162
Parameter Reference
AC30 series Variable Speed Drive
Spd Direct Input
Parameters::Motor Control::Spd Direct Input
Only apply to SVC control mode, IM or PMAC.
Parameter Name No. Path Default Range Units Writable
Direct Input Select 0528
Parameters::Motor Control::Spd Direct
Input
0 0:NONE
1:ANIN1
2:ANIN2
ALWAYS
The direct input to the speed loop is an analog input which is sampled synchronously with the speed loop. This ensures that the speed
loop always has the most up-to-date value of the input, allowing it to respond faster. Either of the two analog inputs can be selected as
the direct input. If NONE is selected, the input is set to zero. When not in use, it should be disabled by selecting NONE.
Direct Input Ratio 0529
Parameters::Motor Control::Spd Direct
Input
1.0000 -10.0000 to 10.0000
ALWAYS
The Direct Input is multiplied by this parameter.
Direct Input Pos Lim 0530
Parameters::Motor Control::Spd Direct
Input
110.00 -110.00 to 110.00 %
ALWAYS
This limits the upper value of the Direct Input.
Direct Input Neg Lim 0531 Parameters::Motor Control::Spd Direct
Input -110.00 -110.00 to 110.00 % ALWAYS
This limits the lower value of the Direct Input.
Functional Description
The Drive is commanded to run the motor at a certain speed, which is derived from various sources, such as comms, analog inputs, commands from
the keypad, etc. Most of these are derived from sources which respond relatively slowly, eg every 1ms. For processes which require a faster
response, the direct input is provided. This is an analog input which is sampled synchronously with the speed loop, as described above. It is added
on to the other sources of speed command to give a total speed command.