Instruction manual

139
4
PARAMETERS
(4) I/O signals
 Enter the set point across inverter terminals 2-5 or in Pr. 133 and enter the process
value signal across inverter terminals 4-5. At this time, set "20" or "21" in Pr. 128.
Signal
Term inal
Used
Function Description
Input
2 2 Set point input Enter the set point for PID control.
44
Process value
input
Enter the 4 to 20mA process value
signal from the detector.
Output
FUP
Depending on
Pr. 190 to
Pr. 192
Upper limit output
Output to indicate that the process value
signal exceeded the upper limit value.
FDN Lower limit output
Output to indicate that the process value
signal exceeded the lower limit value.
RL
Forward (reverse)
rotation direction
output
"Hi" is output to indicate that the output
indication of the parameter unit is
forward rotation (FWD) or "Low" to
indicate that it is reverse rotation (REV)
or stop (STOP).
Item Entry Description
Set point
Across terminals
2-5
Set 0V as 0% and
5V as 100%.
When "0" or "10" is set in Pr. 73
(5V selected for terminal 2).
Set 0V as 0% and
10V as 100%.
When "1" or "11" is set in Pr. 73
(10V selected for terminal 2).
Pr. 133 Set the set point (%) in Pr. 133.
Process
value
Across terminals
4-5
4mA is equivalent to 0% and 20mA to 100%.
M4500E.book 139 ページ ２００５年２月２２日 火曜日 午後５時７分