ABB ACS560 Firmware Manual page 344

344 Parameters
No. Name/Value
71.39 Deadband range
0.0...200000.0
71.40 Deadband delay
0.0...3600.0 s
71.58 Increase prevention
71.59 Decrease
prevention
71.62 Internal setpoint
actual
71.79 External PID units
User text
%
bar
kPa
Pa
psi
CFM
inH O
2
°C
°F
mbar
3
m /h
3
dm /h
I/s
I/min
I/h
3
m /s
3
m /m
3
km /h
gal/s
3
ft /s
3
ft /m
3
ft /h
ppm
Description
The control program compares the absolute value of
parameter 71.04 Deviation act value
defined by this parameter. If the absolute value is within the
deadband range for the time period defined by parameter
71.40 Deadband delay, PID's deadband mode is activated
and 71.06 PID status word
PID's output is frozen and
frozen is set.
If the absolute value is equal or greater than the deadband
range, PID's deadband mode is deactivated.
Range
Defines the deadband delay for the deadband function. See
parameter 71.39 Deadband
Delay
See parameter 40.58 Set 1 increase
See parameter 40.59 Set 1 decrease
See parameter 40.62 PID internal setpoint
Selects the unit for process PID setpoint, feedback and
deviation.
User text
%
bar
kPa
Pa
psi
CFM
inH O
2
°C
°F
mbar
3
m /h
3
dm /h
I/s
I/min
I/h
3
m /s
3
m /m
3
km /h
gal/s
3
ft /s
3
ft /m
3
ft /h
ppm
to the deadband range
bit 9 Deadband active is set. Then
71.06 PID status word bit 2
range.
prevention.
prevention.
actual.
Def/FbEq16
0.0
Output
1 = 1
0.0 s
1 = 1 s
No
No
-
%
0
1
2
3
4
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9
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