9-66
E39
Coefficient for Constant Feeding Rate Time
E50 (Coefficient for Speed Indication)
E39 and E50 specify coefficients for determining the constant feeding rate time, load shaft
speed, and line speed, as well as for displaying the output status monitored.
Calculation expression
Coefficient for speed indication (E50)
Constant feeding rate time (min) =
Frequency × Coefficient for constant feeding rate time (E39)
Load shaft speed
=
Coefficient for speed indication (E50)
×
Frequency (Hz)
Line speed
=
Coefficient for speed indication (E50)
×
Frequency (Hz)
Where, the "frequency" refers to the "reference frequency" to be applied for settings (constant
feeding rate time, load shaft speed, or line speed), or to the "output frequency before slip
compensation" to be applied for monitor.
If the constant feeding rate time is 999.9 min. or more or the denominator of the right-hand
side is zero (0), "999.9" appears.
E40 PID Display Coefficient A
E41 PID Display Coefficient B
These function codes specify PID display coefficients A and B to convert a PID command
and its feedback into easy-to-understand physical quantities to display.
- Data setting range: -999 to 0.00 to 9990 for PID display coefficients A and B.
Display coefficients for PID process command and its feedback (J01 = 1 or 2)
E40 specifies coefficient A that determines the display value at 100% of the PID process
command or its feedback, and E41 specifies coefficient B that determines the display value at
0%.
The display value is determined as follows:
Display value = (PID process command or its feedback (%))/100 × (Display coefficient A -
B) + B
Example
Maintaining the pressure around 16 kPa (sensor voltage 3.13 V) while the pressure sensor can
detect 0 to 30 kPa over the output voltage range of 1 to 5 V:
Select terminal [12] as a feedback terminal and set the gain to 200% so that 5 V corresponds
to 100%.
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