Mitsubishi Electric FR-F800 Series Instruction Manual page 456

 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 switchover
interlock time (multi-pump).
• 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 (multi-pump). 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".
 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 the output frequency is equal to or higher than the setting for the time set in Pr.590 Auxiliary motor
start detection time or longer, 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 the output frequency is equal to or lower than the setting for the time set in Pr.591 Auxiliary motor
stop detection time or longer, 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.
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Output frequency
Pr.20
Pr.583 Pr.583 Pr.583
search engine
Motor connection occurs
Motor
disconnection occurs
Pr.582 Pr.591 Pr.583
Time
5. PARAMETERS
5.11 (A) Application parameters
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