Position Adjustment Parameter Settings - Mitsubishi Electric FR-A800 Series Instruction Manual

5.5.10 Position adjustment parameter settings

Vector Vector Vector PM PM PM
Pr.
426
In-position width
B007
427
Excessive level error
B008
1294 Position detection lower
B192 4 digits
1295 Position detection upper
B193 4 digits
1296 Position detection
B194 selection
1297 Position detection
B195 hysteresis width
 In-position width (Pr.426, Y36 signal)
• The Y36 signal is used as the in-position signal.
• If the number of droop pulses is equal to or smaller than the Pr.426 setting value, the In-position (Y36) signal turns ON.
• To use the Y36 signal, set "36 (positive logic) or 136 (negative logic)" in any of Pr.190 to Pr.196 (Output terminal function
selection) to assign the function.
 Excessive level error (Pr.427)
• If the number of droop pulses exceeds the Pr.427 setting, a position error is detected, Excessive position fault (E.OD) is
activated and the inverter output is shut off. Increase the error threshold level when a small value is set as the Pr.422
Position control gain setting value. Set a small value for early detection even when the load is heavy.
• If Pr.427 = "9999", E.OD is not activated regardless of the amount of droop pulses.
 Position detection signal (Pr.1294 to Pr.1297, FP signal)
• The Position detection level (FP) signal is turned ON when the current position [before the electronic gear] exceeds the
Pr.1295 × 10000 + Pr.1294 position detected. 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 detection level (FP) 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.
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Name Initial value
100 pulses
40K
0
0
0
0
Position
[before electronic gear]
0
FP (For Pr.1296 = 0)
FP (For Pr.1296 = 1)
FP (For Pr.1296 = 2)
search engine
Setting range
Set the number of droop pulses that triggers the In-position
0 to 32767 pulses
(Y36) signal.
Set the number of droop pulses that activates Excessive
0 to 400K
position fault (E.OD).
9999 Function disabled
0 to 9999 Set the lower four digits of the position detection value.
0 to 9999 Set the upper four digits of the position detection value.
0 The position is detected on both the plus and minus sides.
1 The position is detected on the plus side only.
2 The position is detected on the minus side only.
Set the hysteresis width for the detected position where the
0 to 32767
Position detection level (FP) signal turns ON.
Position detection level Pr.1295
ON
ON
ON
ON
5.5 Position control under vector control and PM sensorless vector control
Description
10000 + Pr.1294
Time
Position detection level
Pr.1295 10000 + Pr.1294
1
2
3
4
5
6
7
8
9
10
327
5. PARAMETERS