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Mitsubishi Electric FR-A500 Instruction Manual Page 149

Transistorized inverter.
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(4) I/O signals
Signal
Terminal Used
Depending on
X14
Pr. 180 to Pr. 186
2
2
1
1
4
4
FUP
FDN
Depending on
Pr. 190 to Pr. 195
RL
SE
SE
To start PID control, switch on the X14 signal. When this signal is off, ordinary inverter operation is
performed without the PID action being performed.
Enter the set point across inverter terminals 2-5 or into Pr. 133 and enter the process value signal across
inverter terminals 4-5. At this time, set "20" or "21" in Pr. 128.
When entering the externally calculated deviation signal, enter it across terminals 1-5. At this time, set "10"
or "11" in Pr. 128.
Item
Entry
Across terminals 2-5
Set point
Pr. 133
Deviation
Across terminals 1-5
signal
Process
Across terminals 4-5
value
Function
PID control
Switch on X14 to select PID control.
selection
Set point input
Enter the set point for PID control.
Deviation signal
Enter the deviation signal calculated externally.
input
Process value
Enter the 4-20mADC process value signal from
input
the detector.
Output to indicate that the process value signal
Upper limit output
exceeded the upper limit value.
Output to indicate that the process value signal
Lower limit output
exceeded the lower limit value.
"Hi" is output to indicate that the output indication
Forward (reverse)
of the parameter unit is forward rotation (FWD) or
rotation direction
"Low" to indicate that it is reverse rotation (REV)
output
or stop (STOP).
Output terminal
Common to terminals FUP, FDN and RL
common
Set 0V as 0% and 5V as 100%.
Set 0V as 0% and 10V as 100%.
Set the set point (%) in Pr. 133.
Set -5V as -100%, 0V as 0% and +5V as
+100%.
Set -10V as -100%, 0V as 0% and +10V as
+100%.
4mADC is equivalent to 0% and 20mADC to 100%.
Description
Description
When "1, 3, 5, 11, 13 or 15" is set in Pr. 73
(5V selected for terminal 2).
When "0, 2, 4, 10, 12 or 14" is set in Pr. 73
(10V selected for terminal 2).
When "2, 3, 5, 12, 13 or 15" is set in Pr. 73
(5V selected for terminal 1).
When "0, 1, 4, 10, 11 or 14" is set in Pr. 73
(10V selected for terminal 1).
140
PARAMETERS
Remarks
Set any of "10, 11, 20
and 21" in Pr. 128.
Pr. 128 = 20, 21
Pr. 128 = 10, 11
Pr. 128 = 20, 21
(Pr. 128 = 20, 21)
(Pr. 128 = 10, 11,
20, 21)

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