Output Stop Function - Mitsubishi Electric FR-F800 Instruction Manual

5.13.8

Output stop function

The motor coasts to a stop (inverter output shutoff) when inverter output frequency falls to Pr. 522 setting or lower.
Pr. Name
522
Output stop frequency
G105
• 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 motor control) at the start.
Example of when target frequency>Pr.522+2Hz, and start signal is ON/OFF
Target frequency
Pr.522+2Hz

The output frequency before the slip compensation is compared with the Pr.522 setting.
NOTE
• When the output stop function is valid (Pr.522  "9999"), the DC injunction brake becomes invalid and the motor coasts to
stop when the output frequency drops to the Pr.522 setting or lower.
Analog input command
Pr.522+2Hz
Pr.522
Output frequency
Pr.522+2Hz
Pr.522

At a stop condition, the motor is accelerated at the Pr.13 Starting frequency (0.01 Hz under PM motor 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 (PM motor control).

Steepness of the slope depends on the acceleration/deceleration time settings such as Pr.7.
Initial Setting
value range
0 to 590 Hz
9999
9999
∗1
Output frequency
(fixed)
Pr.522
Pr.13
STF
RUN
Example of: target frequency = analog input command, start signal always ON
∗2
∗3
∗1 ∗1
Pr.13
Inverter output
shutoff
STF
RUN
Set the frequency to start coasting to a stop (output shutoff).
No function
Inverter output shutoff
∗3
Inverter output
shutoff
(G) Control parameters
Description
Time
Time
Time
PARAMETERS
5
GROUP
G
505