Mitsubishi Electric 800 Series Instruction Manual page 349

NOTE
• Even if C4 is set to other than 100%, the frequency setting signal is treated as 100%.
• Even if C3 is set to other than 0%, the frequency setting signal is treated as 0%.
• If C2 is set to other than 0 Hz, the frequency setting signal is 0% at the C2 frequency setting or below.
 Input/output signals
• The following signals can be used by assigning functions to Pr.178 to Pr.189 (Input terminal function selection) and
Pr.190 to Pr.196 (Output terminal function selection).
• Input signal
Signal Function
X14 PID control valid
PID forward/reverse
X64
action switchover
PID P control
X72
switchover
• Output signal
Signal Function
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 and AM.
• 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 terminal function selection and
Pr.158 AM terminal function selection for each monitor.
Parameter Monitor
Setting description
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) > 16-bit digital input (option FR-A8AX) > analog input (terminals
2)
348
14. (A) Application Parameters
14.6 Dancer control
Pr.178 to Pr.189
setting
14
64
72
Pr.190 to Pr.196
setting
Positive Negative
logic logic
15 115
14 114
16 116
47 147
Minimum
Terminal
increment
FM
0.01 Hz 0 to 590 Hz
page 338 for details on other PID control monitors.
When this signal is assigned to the input terminal, PID control is enabled when this
signal is ON.
PID control is switched between forward and reverse action without changing
parameters by turning ON this signal.
Only proportional term is valid when this signal is turned ON. (Integral and
differential values are reset.)
Output when the measured value signal exceeds Pr.131 PID upper limit.
Output when the measured value signal falls below Pr.132 PID lower limit.
"Hi" is output when the output display of the operation panel is forward rotation (the
RUN LED is ON) and "Low" is output when the display is reverse rotation (the RUN
LED blinks) and stop (the RUN LED is OFF).
Turns ON during PID control.
Monitor range
Terminal Operation
AM panel
Description
Description
Remarks
When outputting through terminals FM and AM, the
full scale value can be adjusted by Pr.55
Frequency monitoring reference.