ABB ACS580 - Page 52

48 Settings, I/O and diagnostics on the control panel
PID output: View the process PID output or set its range.
40.01 Process PID
output actual
40.36 Set 1 output min
40.37 Set 1 output max
Unit: PID customer unit. Sets the text shown as the unit
for setpoint, feedback and deviation.
Deviation: View or invert process PID deviation.
40.04 Process PID
deviation actual
40.31 Set 1 deviation
inversion
Setpoint: View or configure the process PID setpoint, ie. the
target process value.
You can also use a constant setpoint value instead
of (or in addition to) an external setpoint source.
When a constant setpoint is active, it overrides the
normal setpoint.
40.03 Process PID
setpoint actual
40.16 Set 1 setpoint 1
source
Feedback: View or configure process PID feedback, ie. the
measured value.
40.02 Process PID
feedback actual
40.08 Set 1 feedback 1
source
40.11 Set 1 feedback
filter time
Tuning The Tuning submenu contains settings for gain,
integration time and derivation time.
1. Make sure it is safe to start the motor and run the
actual process.
2. Start the motor in remote control.
3. Change setpoint by a small amount.
4. Watch how feedback reacts.
5. Adjust gain/integration/derivation.
6. Repeat steps 3-5 until feedback reacts as
desired.
40.32 Set 1 gain
40.33 Set 1 integration
time
40.34 Set 1 derivation
time
40.35 Set 1 derivation
filter time
Sleep function The sleep function can be used to save energy by
stopping the motor during low demand. By default,
sleep function is disabled. If d, the motor
automatically stops when demand is low, and starts
again when deviation grows too large. This saves
energy when rotating the motor at low speeds
would be useless.
See section Sleep and boost functions for process
PID control on page 101.
40.43 Set 1 sleep level
40.44 Set 1 sleep delay
40.45 Set 1 sleep boost
time
40.46 Set 1 sleep boost
step
40.47 Set 1 wake-up
deviation
40.48 Set 1 wake-up
delay
Menu item Description Corresponding
parameter
ACS580 FW.book Page 48 Wednesday, September 21, 2016 9:48 PM