Mitsubishi Electric 800 Series Instruction Manual page 140

Selecting the fast-response operation (Pr.800 (Pr.451) = "100 to 106, 109
to 112")
• Setting Pr.800 (Pr.451) = "any of 100 to 106 or 109 to 112" selects the fast-response operation. The fast-response
operation is available during vector control, Real sensorless vector control, and PM sensorless vector control.
Control method
Vector control
Real sensorless vector control
PM sensorless vector control

When driving a 3.7 kW no-load motor.

For the FR-A860-01080 or lower.

For the FR-A860-01440 or higher.
NOTE
• During fast-response operation, the carrier frequency is always 4 kHz. (Refer to
• E.THT is more likely to occur when fast-response operation is set at the SLD or LD rating.
Vector control test operation, PM sensorless vector control test
operation (Pr.800="9, 109")
• Test operation in the speed control is available without connecting a motor.
The speed calculation changes to track the speed command, and such speed changes can be checked on the operation
panel or by outputting it as analog signals to the terminal FM or AM.
NOTE
• Since current is not detected and voltage is not output, monitors related to current and voltage such as output current and
output voltage, etc. and output signals do not function.
• For speed calculation, speed is calculated in consideration of Pr.880 Load inertia ratio.
• Since current synchronization operation occurs during PM sensorless vector control, the output frequency becomes the same
value as the command frequency.
I/O signal operation during the test operation
• During the test operation, the following signals are invalid.
1) Input terminal function selection (Pr.178 to Pr.189)
• Brake opening completion signal (BRI)
• Load pattern selection forward/reverse rotation boost (X17)
• V/F switchover (X18)
• Orientation command (X22)
• Control mode switchover (MC)
• Start-time tuning start external input (X28)
• Torque bias selection 1, Torque bias selection 2 (X42, X43)
• Second brake sequence open completion (BRI2)
• Torque limit selection (X93)
Fast-response operation
Pr.800 (Pr.451) = "100 to 106, 109 to 112"
130 Hz at maximum
50 Hz at maximum

50 Hz at maximum
Speed response
Normal-response operation
Pr.800 (Pr.451) = "0 to 6, 9 to 12"
50 Hz at maximum
20 Hz at maximum
10 Hz at maximum
30 Hz at maximum
page 261.)
PARAMETERS
Control method


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