Parameter descriptions
560 Tolerance Band
The analog input characteristic with change of sign of the reference value can be adapted by the pa-
rameter
Tolerance Band 560 of the application. The adjustable tolerance band extends the zero pas-
sage of the speed relative to the analog control signal. The parameter value (percent) is relative to
the maximum current or voltage signal.
The default
Minimum Frequency 418 or Minimum Reference Percentage 518 extends the parameter-
ized tolerance band to the hysteresis.
Tolerance band with set maximum frequency
For example, the output variable coming from positive input signals is kept on the positive minimum
value until the input signal becomes lower than the value for the tolerance band in the negative direc-
tion. Then, the output variable follows the set characteristic.
Pos. maximum value
Neg. maximum value
0 V
(0 mA)
+10 V
(+20 mA)
(X1/Y1)
(X2/Y2)
Pos. maximum value
zero point
tolerance band
Neg. maximum value
0 V
(0 mA)
+10 V
(+20 mA)
(X1/Y1)
(X2/Y2)
pos. maximum value
pos. minimum value
neg. minimum value
zero point
tolerance band
n
eg. maximum value
+10 V
(+20 mA)
(X1/Y1)
(X2/Y2)
179
Control inputs and outputs 06/2013 Operating Instructions
Agile