Hitachi WJ200-001S Instruction Manual page 116

PID Control
When enabled, the built-in PID loop calculates an ideal inverter output value to cause a
loop feedback process variable (PV) to move closer in value to the set point (SP). The
frequency command serves as the SP. The PID loop algorithm will read the analog input
for the process variable (you specify the current or voltage input) and calculate the
output.
Func.
Name
Code
PID enable

PID proportional gain

PID integral time constant

PID derivative time constant

PV scale conversion

PV source

Reverse PID action

PID output limit

PID feed forward selection

PID sleep function action

threshold
PID sleep function action

delay time
NOTE: The setting  for the integrator is the integrator's time constant Ti, not the
gain. The integrator gain Ki = 1/Ti. When you set  = 0, the integrator is disabled.
"A" Function
Description
Enables PID function,
three option codes:
PID Disable
PID Enable
PID Enable with reverse
output
Proportional gain has a range
of 0.00 to 25.00
Integral time constant has a
range of 0.0 to 3600 seconds
Derivative time constant has a
range of 0.0 to 100 seconds
Process Variable (PV), scale
factor (multiplier), range of
0.01 to 99.99
Selects source of Process
Variable (PV), option codes:
[OI] terminal (current in)
[O] terminal (voltage in)
ModBus network
Pulse train input
Calculate function output
Two option codes:
PID input = SP-PV
PID input = -(SP-PV)
Sets the limit of PID output as
percent of full scale,
range is 0.0 to 100.0%
Selects source of feed forward
gain, option codes:
Disabled
[O] terminal (voltage in)
[OI] terminal (current in)
Sets the threshold for the
action, set range 0.0~400.0 Hz
Sets the delay time for the
action, set range 0.0~25.5 sec
Run Defaults
Mode
Initial data Units
Edit
00

 1.0 
1.0 sec

 0.00 sec
1.00

00

00

0.0 %

00

0.00 Hz

0.0 sec

331




