Mitsubishi Electric FR-A800, Instruction Manual

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Position control under vector control and PM sensorless vector control Parameters
5 - 180
Position detected signal (Pr. 1294 to Pr. 1297, FP signal)
●
The position detected signal (FP signal) is turned ON when the current position [before the
electronic gear] exceeds the position detection (Pr. 1295 × 10000 + Pr. 1294). To use the FP signal,
set "60 (positive logic) or 160 (negative logic)" in any of Pr. 190 to Pr. 196 (output terminal function
selection) to assign the function.
●
Whether the position detection is determined on the plus side or minus side can be selected by
Pr. 1296 "Position detection selection". When "0" is set, the position is detected on both the plus
and minus sides. When "1" is set, the position is detected on the plus side only. When "2" is set,
the position is detected on the minus side only.
●
When a current position varies, the position detected signal may repeat ON/OFF (chatter). Setting
hysteresis to the detected position prevents chattering of the signal. Use Pr. 1297 "Position
detection hysteresis width" to set a hysteresis width.
I002828E
Fig. 5-71: Function of FP signal
I002829E
Fig. 5-72: FP signal at current position variation
0
Position
[before electronic gear]
Position detection level Pr. 1295 10000 + Pr. 1294
Time
ON ON
ON
ON
FP (For Pr. 1296 = 0)
FP (For Pr. 1296 = 1)
FP (For Pr. 1296 = 2)
Position detection level
Pr.1295 × 10000 + Pr. 1294
FP
Position
[before electronic gear]
Position detection level
Pr.1295 × 10000 + Pr. 1294
Time
ON ON ON
Current position
Pr. 1297
Pr. 1297