Output Stop Function - Mitsubishi Electric 800 Series Instruction Manual

600v class specification inverter

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Output stop function

The motor coasts to a stop (inverter output shutoff) when inverter output frequency falls to Pr. 522 setting or lower.

Output stop frequency

• When both of the frequency setting signal and output frequency falls to the frequency set in Pr. 522 or lower, the inverter

stops the output and the motor coasts to a stop.

• At a stop condition, the motor starts running when the frequency setting signal exceeds Pr.522 + 2 Hz. The motor is

accelerated at the Pr.13 Starting frequency (0.01 Hz under PM sensorless vector control) at the start.

Example of when target frequency>Pr.522+2Hz, and start signal is ON/OFF

Target frequency

The output frequency before the slip compensation is compared with the Pr.522 setting.

• When the output stop function is valid (Pr.522  "9999"), the DC injunction brake (zero speed control, servo lock) becomes

invalid and the motor coasts to stop when the output frequency drops to the Pr.522 setting or lower.

Analog input command

Output frequency

At a stop condition, the motor is accelerated at the Pr.13 Starting frequency (0.01 Hz under PM sensorless vector control).

The output frequency to be compared with the Pr.522 setting is the output frequency before slip compensation (V/F control and Advanced

magnetic flux vector control), or the speed command value converted into the frequency (Real sensorless vector control, vector control, and PM

sensorless vector control).

Steepness of the slope depends on the acceleration/deceleration time settings such as Pr.7.

Output frequency

Example of: target frequency = analog input command, start signal always ON

Inverter output

(G) Control parameters

Set the frequency to start coasting to a stop (output shutoff).

Inverter output shutoff

Inverter output

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