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142
PID control (Pr. 128 to Pr. 134)
(4) I/O signals
z To start PID control, turn on the X14 signal. When this signal is off, normal inverter operation is performed without
the PID action being done.
z When entering the externally calculated deviation signal, enter it across terminals 1-5. At this time, set "10" or "11"
in Pr. 128.
z The set point is given to across inverter terminals 2-5 or set in Pr.133. The measured value signal is input to
across inverter terminals 1-5. At this time, set "30" or "31" in Pr.128.
Analog input voltage range of the measured value differs according to the year and month when the inverter was
manufactured
•In and before June 2003 ... 0V to 10V (input of -10V to 0V are regarded as 0V)
•In and after July 2003........ -10V to 10V
Check the rating plate for the month when the inverter was manufactured. (Refer to page 220.)
*: The value changes by calibration
Signal
Terminal
Used
Function Description Remarks
Input
X14
Depending on
Pr. 180 to 183,
Pr. 187
PID control
selection
Turn on X14 to select PID
control.
Set any of 10, 11, 30 and 31 in Pr. 128.
11
Deviation signal
input
Enter the deviation signal of
the 0 to ±10V signal
calculated externally.
When Pr. 128 = 10, 11
Refer to Pr. 917 and
Pr. 918 (page 190) for
calibration.
measured value
input
Enter the measured value
signal from the detector.
When Pr. 128 = 30, 31
2 2 Set point input
Enter the set point for PID
control.
When Pr. 128 = 30, 31
Refer to Pr. 902 and
Pr. 903 (page 190) for
calibration.
55
Common terminal
to the PID control
setting signal
(terminal 2, 1)
Isolated from terminals SD
and SE. Do not earth
(ground).
Output
RL
Depending on
Pr. 190 to 192,
Pr. 195
PID forward/
reverse rotation
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).
(When Pr. 128 = 10, 11,
30, 31)
Open
collector output
FUP Upper limit output
Output to indicate that the
measured value signal
exceeded the upper limit
value.
When Pr. 128 = 30, 31
FDN Lower limit output
Output to indicate that the
measured value signal
exceeded the lower limit
value.
SE SE
Output terminal
common
Common terminal for
terminal RL
Item
Entry Method
Description
Deviation
signal
Across
terminals 1-5
Set -10V as -100%
Set 0V as 0% and +10V as +100%.*
When 10 or 11 is set in Pr. 128,
terminal 1 gives the deviation input signal
independently of the Pr. 868 setting.
Set point
Across
terminals 2-5
Set 0V as 0% and 10V as +100%.*
When 30 or 31 is set in Pr. 128,
terminal 1 gives the measured value input signal
independently of the Pr. 868 setting.
Pr.133
Set the set point (%) in Pr. 133.
Measured
value
Across
terminals 1-5
Set -10V as -100%, 0V as 0% and
+10V as +100%.*