Mitsubishi Electric FR-F820-00077 Instruction Manual page 571

Parameters
Waiting time setting at MC switchover (Pr. 580, Pr. 581)
● Set a waiting time for switchover of MC for the direct system (Pr. 579="2") or alternative direct
system (Pr.579="3").
● Set the MC switching time (for example, the time after RIO1 turns OFF until RO1 turns ON) in Pr. 580
"MC switching interlock time".
● Set the time after the MC switchover until the motor starts (for example, the time after RIO1 turns
OFF and RIO2 turns ON until the inverter output starts) in Pr. 581 "Start waiting time". Set this time
a little longer than the MC switching time.
Acceleration/deceleration time when an auxiliary motor is connected and disconnected
(Pr. 582, Pr. 583)
● Use Pr. 582 "Auxiliary motor connection-time deceleration time" to set the deceleration time for
forcibly decreasing the output frequency of the inverter when an auxiliary motor connection
occurs. Set the deceleration time in Pr. 582 from Pr. 20 "Acceleration/deceleration reference
frequency" to stop. The output frequency is not forcibly changed when Pr. 582="9999".
● Use Pr. 583 "Auxiliary motor disconnection-time acceleration time" to set the acceleration time for
forcibly increasing the output frequency of the inverter when an auxiliary motor disconnection
occurs. Set the acceleration time in Pr. 583 from stop to Pr. 20 "Acceleration/deceleration reference
frequency". The output frequency is not forcibly changed when Pr. 583="9999".
Fig. 5-190:
Starting auxiliary motors (Pr. 584 to Pr. 586, Pr. 590)
● Use Pr. 584 to Pr. 586 to set the output frequency of the inverter at which the commercial power
supply operation motors are started. When output frequency equals to or higher than the setting
continues for longer than the time set in Pr. 590 "Auxiliary motor start detection time", auxiliary
motors driven by the commercial power supply are started.
● To set the starting frequency, use Pr. 584 "Auxiliary motor 1 starting frequency" for the first auxiliary
motor, and use Pr. 585 "Auxiliary motor 2 starting frequency" for the second motor, and use Pr. 586
"Auxiliary motor 3 starting frequency" for the third motor.
● The starting sequence depends on the Pr. 579 "Motor connection function selection" setting.
Stopping auxiliary motors (Pr. 587 to Pr. 589, Pr. 591)
● Use Pr. 587 to Pr. 589 to set the output frequency of the inverter at which the commercial power
supply operation motors are stopped. When output frequency equals to or lower than the setting
continues for longer than the time set in Pr. 591 "Auxiliary motor stop detection time", auxiliary
motors driven by the commercial power supply are stopped.
● To set the stopping frequency, use Pr. 587 "Auxiliary motor 1 stopping frequency" for the first
auxiliary motor, and use Pr. 588 "Auxiliary motor 2 stopping frequency" for the second motor, and
use Pr. 589 "Auxiliary motor 3 stopping frequency" for the third motor.
● The stopping sequence depends on the Pr. 579 "Motor connection function selection" setting.
FR-F800
Output frequency
Pr. 20
Pr.583 Pr.583 Pr. 583
Pr. 582
Acceleration/deceleration time
Motor connection occurs
Motor disconnection
occurs
Pr. 591 Pr. 583
(A) Application parameters
Time
I003056E
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