Position Control - Mitsubishi Electric FR-A7AL Instruction Manual

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6.8.3

Position control

(1) Position command source selection (Pr. 419)
When using the FR-A7AL, set "1" in Pr. 419.
Pr. 419 Setting
0 (initial value)
1
2
(2) In-position width (Pr. 426)
The Y36 terminal signal acts as an in-position signal.
The in-position signal turns on when the number of droop pulses becomes less than the setting.
(3) Excessive level error (Pr. 427)
An error becomes excessive when the droop pulses exceed the setting.
When you decreased the position loop gain (Pr. 422) setting, increase the error excessive level setting.
Also decrease the setting when you want to detect an error slightly earlier under a large load.
When "9999" is set in Pr. 427, position error large (E.OD) does not occur regardless of droop pulses.
Conditional position feed function by contact input (by parameter).
Position command by pulse train input (when the FR-A7AL is mounted).
Conditional pulse train position command by inverter pulse train input.
POSITION CONTROL FUNCTION
Description
6
67

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