Mitsubishi Electric FR-F800 Series Instruction Manual page 462

• When Pr.579 Motor connection function selection = "1 or 3" (multi-pump function), the starting order of the motors is
changed when the sleep function is activated. The stirring operation during the sleep is applied to the motor to be started
first next time. When the previous starting order was M1-M2-M3-M4, and the next starting order is M2-M3-M4-M1, stirring
operation during the sleep will be applied to the M2 motor.
• When the auxiliary motor starting condition is satisfied by the stirring operation during the sleep while the multi-pump
function is used, the stirring operation continues. The auxiliary motor does not start.
NOTE
• When the control switches between the first PID control and second PID control during the sleep function, the interval time and
the stirring time timer are carried over.
• When the sleep function cancellation condition is satisfied, the sleep function is cancelled, and the stirring function during the
sleep is also cancelled.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 PID priming pump function (Pr.1363)
• This function starts the priming pump first before starting the main pump so that the main pump does not intake air at start.
• When the start command is turned ON after setting Pr.1363 PID priming time ≠ "9999", the Priming pump operation
(Y217) signal turns ON to start the priming pump. When the elapsed time exceeds the Pr.1363 setting, the main pump
starts.
• The priming pump continues operation during operation of the main pump. When the STF signal is turned OFF to stop the
main pump, the priming pump also stops.
• For the Y217 signal, set "217 (positive logic)" or "317 (negative logic)" in any parameter from Pr.190 to Pr.196 (Output
terminal function selection) to assign the function.
Output frequency
NOTE
• The priming operation is performed at every startup.
• When the operation is restarted after inverter reset by a protective function activation, the priming operation is performed.
• When the inverter is restarted by the retry operation at a fault occurrence, the priming pump operation is continued and after
the restart, the PID control operation is performed without waiting for the priming time.
• When the control switches between the first PID control and second PID control during the priming time, the priming time is
carried over.
• The PID priming pump function is enabled when the PID setting is applied to the frequency.
• Even when the inverter emergency stop operation (output shutoff by the MRS signal, etc.) is performed, the PID priming pump
function operation continues while the power is supplied to the control circuit. For the emergency stop operation, configure
another circuit to stop the priming pump.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 PID auxiliary pressure pump function (Pr.1374 and Pr.1375)
• This function enables signal output to activate an auxiliary pressure pump when the pump flow rate is low in the system
which constantly requires a high pressure.
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Priming time
(Pr.1363)
STF
ON
PID
Y217 ON
search engine
PID control
ON
Time
5. PARAMETERS
5.11 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
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