Mitsubishi Electric 800 Series Instruction Manual (Function page 179

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 Motor stop characteristics
When running the motor by the parameter settings, pulses as much as the motor speed delay to the internal command pulse
frequency are accumulated in the deviation counter. These pulses are called droop pulses (ε). The relationship between the
command frequency (fo) and position loop gain (Kp: Pr.422) is shown in the following formula.
fo
H =
[pulse]
K
p
The number of droop pulses (ε) is 20480 with the initial value Kp = 10 s
Since the inverter has droop pulses during operation, a stop settling time (ts), which is the time between the zero command
output and the motor stop, is required. Set the operation pattern taking into the account the stop setting time.
1
ts = 3 ×
[s]
Kp
The stop settling time (ts) is 0.3 second for the initial value Kp = 10 s
The accuracy of positioning Δε is (5 to 10) × Δ = Δε [mm]
178
7. Position Control
7.5 Electronic gear settings
204800
H =
[pulse] (with the rated motor speed)
1
0
-1
.
-1
.

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