Absolute Position Control - Mitsubishi Electric 800 Series Instruction Manual

7.2

Absolute position control

When the FR-A8APS is used, setting "1110" in Pr.419 Position command source selection enables storing of the position
after the first home position return is completed for the point table positioning during position control by point tables. The home
position return operation is not required at every power-ON.
(1) Parameter setting
To perform absolute position control, install the FR-A8APS and set "1110" in Pr.419.
Also, connect an encoder with EnDat interface such as the EQN1325 or equivalent (with a multi-turn counter).
When an encoder other than mentioned above is connected or the PM sensorless vector control (position control) is set, the
operation is the same as the one under the setting of Pr.419 = "110".
• Position command source selection (Pr.419)
Pr.419
0 (initial value)
1

2
10
100/110
1110


During position control under vector control, if "1" is set in Pr.419 while the FR-A8AL is not installed or is disabled, a protective function
(E.OPT) is activated.

During position control under vector control, if "1110" is set in Pr.419 while the FR-A8APS is not installed or is disabled, a protective
function (E.OPT) is activated.
34
POSITION CONTROL FUNCTION
Simple position control by point tables (position command by setting parameters)
Position command by the pulse train input (when the FR-A8AL is installed)
Simple pulse train position command by the pulse train input to the inverter
Simple position control by point tables (position command by setting parameters)
(The home position data is retained at servo-OFF (LX signal: OFF).)
Simple position control by point tables (position command by setting parameters)
(The monitor value of the current position 2 is cleared when the home position return is completed.)
Simple position control by point tables (position command by setting parameters)
(absolute position control)
Description