Selection Of Regenerative Brake Unit; Stall Prevention Operation Level - Mitsubishi Electric MELIPM Series Instruction Manual

8.5.3 Selection of regenerative brake unit

Pr. 30 "regenerative brake option selection"
Pr. 70 "regenerative brake duty"
Pr.
30
70
Set Pr. 30 and Pr. 70 according to the regenerative brake unit used. At the
setting of Pr. 30 = 0, the Pr. 70 "regenerative brake duty" value is fixed at 3% and
Pr. 70 cannot be read.
When Pr. 30 = 1, set the value given in the following table since Pr. 70 setting is
enabled.
Regenerative Brake Option
MRS brake resistor (option)
BU- brake unit (option)
FR-ABR- high-duty brake resistor (option)
Do not set the Pr. 70 value which exceeds the setting of the brake
resistor used. Doing so will overheat the brake resistor.

8.5.4 Stall prevention operation level

Pr. 22 "stall prevention operation level"
Setting Range
0, 60.0 to 200.0
When the output current reaches the Pr. 22 setting, the speed is varied with the
running status to suppress the torque. The setting is based on the rated motor
current.
When the stall prevention function is activated, OL appears on the screen of the
FR-PU04 parameter unit. That the stall prevention function has been activated
can be exported as OL signal from the terminal.
If the stall prevention function is activated during acceleration or
deceleration, the acceleration or deceleration time [Section 8.5.2]
will be longer than the setting. When the travel of a machine or the
like is determined by the acceleration or deceleration time, the travel
MEMO
will increase due to the operation of the stall prevention function.
If the stall prevention function is activated during constant speed
operation, the running speed may vary abruptly.
Setting Range
0, 1
0.0 to 15.0
CAUTION
Unit
% When 0 is set, the stall prevention function is not activated.
Refer to: 8.7.2 Selection of the control circuit
8-9
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8 PARAMETER FUNCTIONS
Unit

%
Pr. 30
0
0
1
Remarks
output terminal functions
Pr. 70


10
8