Omron K3MA-J User Manual page 35

Parameter Setting
Operation
3-4 Monitoring the Feed Speed of a Conveyer (K3MA-F)
• The scaling is set as follows.
INP: 100
DSP: 18850
Position of decimal point: \\\\.\
(Calculation of scaling value)
Peripheral velocity D is expressed by the next equation.
Peripheral velocity D (m/min) = f×60×d×π
f: Frequency (Hz)
d: Roller diameter (m)
The scaling factor (60×d×π) is calculated and multiplied by 10 to indicate down to
one tenth's. The value obtained is 188.496.
The scaling factor is set to a larger value to minimize the errors.
(INP is set to "100" and DSP is set to "18850.")
• Comparative output 1 is used to generate an upper-limit signal action and the
OUT upper-limit value is set to "22.0 m/min."
• Comparative output 2 is used to generate an lower-limit signal action and the
OUT lower-limit value is set to "18.0 m/min."
Level Parameter
p-fre
inp
dsp
Initial setting
dp
out1.t
out2.t
out1
Operation
setting
out2
For details of parameters, refer to "CHAPTER 5 OPERATION".
• When the feed speed reaches 22.0 m/min, comparative output 1 is turned ON.
• When the feed speed decreases to 18.0 m/min, comparative output 2 is turned
ON.
Set value
30
100
18850
\\\\.\
hi
lo
22.0
18.0
3-9