Group 3.13.4: FeedForward
Feedforward usually needs accurate process models,
but in some simple cases a gain + offset type of
feedforward is enough. The feedforward part does not
use any feedback measurements of the actual
controlled process value (water level in the example
in section FeedForward). RSI feedforward control
uses other measurements which are indirectly
affecting the controlled process value.
Code Parameter Min Max Unit Default ID Description
P3.13.4.1 Feedforward function 1 9 1 1059 See P3.13.3.1.
P3.13.4.2 Gain -1000 1000 % 100.0 1060 See P3.13.3.2
P3.13.4.3 FF 1 Source 0 25 0 1061 See P3.13.3.3
P3.13.4.4 FF 1 Minimum -200.00 200.00 % 0.00 1062 See P3.13.3.4
P3.13.4.5 FF 1 Maximum -200.00 200.00 % 100.00 1063 See P3.13.3.5
P3.13.4.6 FF 2 Source 0 25 0 1064 See P3.13.3.6
P3.13.4.7 FF 2 Minimum -200.00 200.00 % 0.00 1065 See P3.13.3.7
P3.13.4.8 FF 2 Maximum -200.00 200.00 % 100.00 1066 See P3.13.3.8
Group 3.13.5: Sleep Function
This function will put the drive into sleep mode if the
frequency stays below the sleep limit for a longer time
than that set with the Sleep Delay.
Code Parameter Min Max Unit Default ID Description
P3.13.5.1 SP 1 Sleep frequency
limit 1
0.00 320.00 Hz 0.00 1016
Drive goes to sleep mode when the
output frequency stays below this limit
for a time greater than that defined by
parameter Sleep delay.
P3.13.5.2 SP 1 Sleep Delay 0 3000 s 0 1017
The minimum amount of time the
frequency has to remain below the
Sleep level before the drive is stopped.
P3.13.5.3 SP 1 WakeUpLevel Varies 0.00 1018
Defines the level for the PID feedback
value wake-up supervision. Uses
selected process units.
P3.13.5.4 SP 1 WakeUpMode 0 1 0 1019
Select if wake up level should work as
an absolute level or as an offset below
the actual setpoint value.
0 = Absolute Level
1 = Relative Setpoint
P3.13.5.5 SP 2 Sleep Freq 0.00 320.00 Hz 0.00 1075
Drive goes to sleep mode when the
output frequency stays below this limit
for a time greater than that defined by
parameter Sleep delay.
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