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Programming Your Application
690+ Series Frequency Inverter
Parameter Descriptions
ADAPTIVE THRESH
Range: 0.00 to 10.00 %
The
Adaptive Threshold
and
Adaptive P-Gain
parameters allow a different value of speed
loop proportional gain to be programmed around zero speed demand.
ADAPTIVE THRESH is the threshold around zero speed demand where the adaptive speed
loop proportional gain is used. It is expressed as a % of the maximum speed value. With a
speed demand below the ADAPTIVE THRESH value, the ADAPTIVE P-GAIN is used by
the speed loop; with the speed demand above the ADAPTIVE THRESH value, the normal
SPEED PROP GAIN parameter is used in the speed loop.
The ADAPTIVE THRESH parameter is symmetric around zero speed.
Note:- A value of 0.00% for the ADAPTIVE THRESH parameter effectively disables the
ADAPTIVE P-GAIN around zero speed demand feature.
ADAPTIVE P-GAIN
Range: 0.00 to 300.00
The
Adaptive Threshold
and
Adaptive P-Gain
parameters allow a different value of speed
loop proportional gain to be programmed around zero speed demand.
The ADAPTIVE P-GAIN is the speed loop proportional gain used in the speed loop when the
speed demand is below the threshold set by the ADAPTIVE THRESH parameter.
DIRECT IP SELECT
Range: See below
The direct input to the speed loop is an analog input which is sampled synchronously with the
speed loop. This ensures that the speed loop always has the most up-to-date value of the input,
allowing it to respond faster. Any one of the four analog inputs can be selected as the direct
input. If NONE is selected, the input is set to zero. When not in use, it should be disabled by
selecting NONE.
0 : NONE
1 : ANIN 1
2 : ANIN 2
3 : ANIN 3
4 : ANIN 4
DIRECT RATIO
Range: -10.0000 to 10.0000
The Direct Input is multiplied by this parameter.
DIRCT IP POS LIM
Range: -110.00 to 110.00 %
This limits the upper value of the Direct Input.
DIRCT IP NEG LIM
Range: -110.00 to 110.00 %
This limits the lower value of the Direct Input.
SPEED POS LIM
Range: -110.00 to 110.00 %
This sets the upper limit of the speed demand.
SPEED NEG LIM
Range: -110.00 to 110.00 %
This sets the lower limit of the speed demand.
TORQ DMD ISOLATE
Range: FALSE / TRUE
Selects between Speed Control mode and Torque Control mode. When TRUE, (Torque
Control mode) the torque demand output from the speed loop block is the sum of the Direct
Input plus the AUX TORQUE DMD parameter.
TOTAL SPD DMD RPM
Range: —.xx rpm
This diagnostic shows the final values of the speed demand obtained after summing all
sources. This is the value which is presented to the speed loop.
TOTAL SPD DMD %
Range: —.00 %
This diagnostic shows the final values of the speed demand obtained after summing all
sources. This is the value which is presented to the speed loop.