Mitsubishi Electric FR-A800 Series Instruction Manual page 439

• Set Pr.154 = "10 or 11" when the overvoltage protective function (E.OV[]) is activated during stall prevention operation in
an application with large load inertia. Note that turning OFF the start signal (STF/STR) or varying the frequency command
during stall prevention operation may delay the acceleration/deceleration start.
Pr.154
0
1 (initial value)
10
11
CAUTION
• Do not set the stall prevention operation current too low.
Doing so will reduce the generated torque.
• Be sure to perform the test operation.
Stall prevention operation during acceleration may extend the acceleration time.
Stall prevention operation during constant-speed operation may cause sudden speed changes.
Stall prevention operation during deceleration may extend the deceleration time.
Parameters referred to
Pr.22 Torque limit levelpage 245
Pr.73 Analog input selectionpage 496
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.196 (Output terminal function
Pr.858 Terminal 4 function assignment, Pr.868 Terminal 1 function
438
5. PARAMETERS
5.10 (H) Protective function parameter
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E.OC[] countermeasure
Enabled
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Enabled
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selection)page 521
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E.OV[] countermeasure
—
—
Enabled
Enabled
assignmentpage 500