Mitsubishi Electric FR-A800 Series Instruction Manual page 628

• Output signal
Signal
FUP PID upper limit
FDN Lower limit output
PID forward/reverse
RL
rotation output
During PID control
PID
activated
NOTE
• Changing the terminal functions with Pr.178 to Pr.189 and Pr.190 to Pr.196 may affect other functions. Set parameters after
confirming the function of each terminal.
 PID monitor function
• This function displays the PID control set point and measured value on the operation panel, and can output these from the
terminals FM, AM, and CA.
• Set the following values to Pr.52 Operation panel main monitor selection, Pr.774 to Pr.776 (Operation panel monitor
selection), Pr.992 Operation panel setting dial push monitor selection, Pr.54 FM/CA terminal function selection
and Pr.158 AM terminal function selection for each monitor.
Parameter
Setting
Dancer main set
97
speed
NOTE
• Refer to
 Priority of main speed commands
• The priority of main speed command sources when the speed command source is External is as follows:
JOG signal > multi-speed setting signal (RL/RM/RH/REX) > pulse train input > 16-bit digital input (option FR-A8AX) >
analog input (terminals 2, 4, 1)
• The priority of main speed command sources when "3" is set to Pr.79 Operation mode selection is as follows:
Multi-speed setting signal (RL/RM/RH/REX) > frequency setting (digital setting by PU or operation panel)
• Even if the remote operation function is selected by Pr.59 Remote function selection ≠ "0", compensation of the remote
setting frequency against the main speed is ignored. (The value is "0".)
• If terminal 1 is selected for the first and second PID, terminal 1 added compensation of the main speed is invalid.
• If terminal 2 is selected for the first and second PID, the terminal 2 override function of the main speed is invalid.
• If the same terminal as an external input terminal having a speed command source (external terminal where a main speed
is input) is specified as the measured value input or set point input, the main speed is treated as "0".
• Polarity reversible operation of the main speed is not possible.
• Setting "10 to 17" in Pr.73 Analog input selection enables the polarity reversible operation of the main speed command
to which PID manipulated amount added. (Polarity reversible operation of the main speed command without addition is not
possible.)
• When the polarity reversible operation is enabled, the integral term cannot be limited by the maximum and minimum
frequency when Pr.1015 Integral stop selection at limited frequency = "0 or 10".
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Pr.190 to Pr.196
setting
Function
Positive
logic
15
14
16
47
Monitor Minimum
Terminal
description increment
0.01 Hz. 0 to 590 Hz
page 610 for details on other PID control monitors.
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Negative
logic
Output when the measured value signal exceeds Pr.131 PID upper limit
115
(Pr.1143 Second PID upper limit).
Output when the measured value signal falls below Pr.132 PID lower limit
114
(Pr.1144 Second PID lower limit).
"Hi" is output when the output display of the parameter unit is forward rotation
116 (FWD) and "Low" is output when the display is reverse rotation (REV) and stop
(STOP).
147 Turns ON during PID control.
Monitor range
Terminal Operation
FM/CA AM panel
Description
Remarks
When outputting through terminals FM, CA and
AM, the full scale value can be adjusted by Pr.55
Frequency monitoring reference.
5. PARAMETERS
5.14 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
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