Output Stop Function (Pr.522) - Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual

4.10.5 Output stop function (Pr.522)

The motor coasts to a stop (inverter output shutoff) when inverter output frequency falls to Pr. 522 setting or lower.
Parameter
Name
Number
522 Output stop frequency
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 201)
⋅ 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 +2Hz. The motor is
accelerated at the Pr.13 Starting frequency (0.01Hz under IPM motor control) at the start.
Example of when target frequency>Pr.522+2Hz, and start signal is ON/OFF
Output frequency
*
Target frequency
(fixed)
Pr.522+2Hz
Pr.522
Pr.13
STF
RUN
* The output frequency before the slip compensation is compared with the Pr.522 setting.
REMARKS
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.
Example of:
Analog input command
Pr.522+2Hz
Pr.522
*2
Output frequency
*3
Pr.522+2Hz
Pr.522
*1
Pr.13
Inverter output
shutoff
STF
RUN
*1 At a stop condition, the motor is accelerated at the Pr.13 Starting frequency (0.01Hz under IPM motor control).
*2 The output frequency before the slip compensation is compared with the Pr.522 setting.
*3 Steepness of the slope depends on the acceleration/deceleration time settings such as Pr.7.
Initial Setting
Value Range
0 to 400Hz
9999
9999
Inverter output shutoff
target frequency = analog input command,
start signal always ON
*3
*1
Inverter output
shutoff
Motor brake and stop operation
Description
Set the frequency to start coasting to a stop (output shutoff).
No function
Time
Time
Time
4
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