Honeywell SmartVFD HVAC MR4 User Manual page 126

HVAC A
PPLICATION
3.5.14 Group 3.12: PID-controller 1
3.5.14.1 Basic settings
Code Parameter
M3.12.1.1 PID gain
M3.12.1.2 PID integration time
M3.12.1.3 PID derivation time
M3.12.1.4 Process unit selection
M3.12.1.5 Process unit min
M3.12.1.6 Process unit max
M3.12.1.7 Process unit decimals
M3.12.1.8 Error inversion
M3.12.1.9 Dead band hysteresis
M3.12.1.10 Dead band delay
Min Max Unit
0.00 1000.00 %
0.00 600.00 s
0.00 100.00 s
1 40
Varies Varies Varies
Varies Varies Varies
0 4
0 1
Varies Varies Varies
0.00 320.00 s
Table 39.
Default ID Description
If the value of the parameter
is set to 100% a change of
100.00 118 10% in the error value
causes the controller output
to change by 10%.
If this parameter is set to
1,00 second a change of
1.00 119 10% in the error value
causes the controller output
to change by 10.00%/s.
If this parameter is set to
1,00 second a change of
0.00 132 10% in the error value during
1.00 s causes the controller
output to change by 10.00%.
1 1036 Select unit for actual value.
0 1033
100 1034
Number of decimals for pro-
2 1035
cess unit value
0 = Normal (Feedback < Set-
point -> Increase PID output)
0 340 1 = Inverted (Feedback <
Setpoint -> Decrease PID out-
put)
Dead band area around the
setpoint in process units.The
PID output is locked if the
0 1056
feedback stays within the
deadband area for a pre-
defined time.
If the feedback stays within
the dead band area for a pre-
0.00 1057
defined time, the output is
locked.
Honeywell • 54