—————— Instruction manual ——————
301
Input/output
Set
Analog input 1
as input for the wiper of the dancer potentiometer.
Analog input 1 / Select input 1= PID Feed-back
Set
Analog input 2
as line speed input (feed- forward).
To set the feed-forward on analog input, seeing that this one is not directly accessible in the list of high-priority
parameters, it is necessary to pass through a supporting parameter
PAD 0.....PAD 15
.
Analog input 2 / Select input 2 = PAD 0
Set
Digital input 1
as enabling input of PI block of the PID
Digital input 1 = Enable PI PID
Set
Digital input 2
as enabling input of PD block of the PID
Digital input 2 = Enable PD PID
Parameters
Set
Speed base value
equal to the rated speed of the motor.
Speed base value
= 3000rpm
Set
PID source
as
PAD 0
.
(
PAD 0
has been used as supporting parameter for the feed-forward reading on
Analog input 2
)
For PID source, set the parameter number to which it will be associated, choosing it from the list of paragraph
10.2. “
List of high-priority parameters
’ (
PAD 0
has the decimal number 503).
To obtain the correct value it must be added to the decimal number 8192 (fixed offset):
PID source
= (8192 + 503) = 8695
Set
PID source Gain
so that
Feed-fwd PID
reaches, along with the max. analog value on Analog input 2, 85%
of its max. value = 10000 x 85%.
When an analog input is set on a PAD parameter, this will have a max. value +/- 2047.
So:
PID source Gain
= (max
Feed-fwd PID
x 85%) / max
PAD 0
= (10000 x 0.85) / 2047 = 4.153
Set
PID target
as
Speed ref 1
.
n
ote
:
When the ramp function is enabled,
Speed ref 1
is not available. In order to keep it avail
-
able, it is necessary to set the parameter
Enable ramp
= Disable.
PID target
must be set to the parameter number to which it will be associated, choosing it from the list of para
-
graph 10.2, “
List of high-priority parameters
” (
Speed ref 1
has the decimal number 42).
To obtain the correct value it must be added the decimal number 8192 (fixed offset)
PID target
= 8192 + 42 = 8234
Set
PID out scale
so that , the max. analog value on
Analog input 2
(
Feed-fwd PID
= 8500) and
Enable PI
PID
and
Enable PD PID
= Disable,
Speed ref 1
is the same at 2550rpm.
Содержание TPD32-EV-...-2B
Страница 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
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