IDEX Health & Science VS-606V7 Series - Manual (Page 110)

110
• Using PID Control Mode
For details of the PID control setting, refer to the block diagram of the Inverter’s
internal PID control or the block diagram of the operator analog speed reference.
n128 Settings
Set one of the above values when using PID control.
The following table shows how to determine the target value and the feedback value to
be input when the PID control is enabled.
PID Control Selection: n128
Parameter
No.
Name Unit
Setting
Range
Initial
Setting
n128 PID control selection - 0 to 8 0
Setting Function PID Output Characteristics
0 Disabled.
Forward
1 Enabled: deviation is subject to differential control.
2 Enabled: feedback signal is subject to differential control.
3
Enabled: frequency reference + PID control, and deviation
are subject to differential control.
4
Enabled: frequency reference + PID control, and feedback
signal are subject to differential control.
5 Enabled: deviation is subject to differential control.
Reverse
6 Enabled: feedback signal is subject to differential control.
7
Enabled: frequency reference + PID control, and deviation
are subject to differential control.
8
Enabled: frequency reference + PID control, and feedback
signal are subject to differential control.
Input Condition
Target
Value The currently selected
frequency reference
Determined by the frequency reference selection (n004)
When the local mode is selected, the target value is
determined by frequency reference selection in local mode
(n008).
When the multi-step speed reference is selected, the
currently selected frequency reference becomes the target
value.
Feedback
Value
The frequency reference that is set
to the PID feedback value
selection (n164)
-
n164 setting Description
0 Control circuit terminal FR (Voltage 0 to 10V).
1 Control circuit terminal (Current 4 to 20 mA)
2 Control circuit terminal (Current 0 to 20 mA)
3 Operator terminal (Voltage 0 to 10V)
4 Operator terminal (Current 4 to 20 mA)
5 Pulse train