Siemens SIMOVERT MASTERDRIVES Manual page 955

[230.6], [250.6], [240.6], [260.6]
Pre-assignment for the
rough position is the
-200.000 ... 199.999 %
rotor position (KK0090)
Src Angle Pos
P182 (90)
KK
<4> 0
P183 = xxx0
Y = X
n
Position from last
<4>
sampling time
Normal case:
P182 = 90, in the case of position
sensing by the motor encoder
Special case, when external
encoder is used for position sensing:
- P182 = 104; P135 = 3, 7
when position sensed by external
sin/cos encoder
- P182 = 104; P135 = 4 AVWF.numerator/denom
when position sensed for external
encoder, multiturn encoder Numerator P180.01 (1)
Denominator P180.02 (1)
<1>
<2>
Resolution, position actual-value =
P171 When the position-feedback scaling factor (AVWF) is
2 increments/revolution
changed or the resolution P171, the unit should be
Example: P171 = 12
switched off and on again
Resolution, position actual-value =
12 or
2 = 4096 increments/revolution
if the absolute encoder is in drive setting P60 = 5 and
changed back again, or a software reset P972 = 1
Appropriate values are:
should be carried out.
- For resolver: 12
(4096 increments/revolution)
- For encoder: 24
(16777216 increments/revolution
[LU] means the unit of length defined
by the actual-value evaluation factor
P169/P170
Pxxx.B (0)
[LU]
KK
1 2
Position sensing
Motor encoder in slot C
<2>
Pos Resolution
9 ... 30
Offset RotorPos
P171 (12)
anti-clockwise operation
Shift division
P188 (0.000)
<1>
n
+
position
X Y
(Position difference
+
–
X
between two
Y=
(32-n)
2
sampling times)
n-1
ActvWtF(bef.DP)
0 ... 999
P169 (1)
P183.01
+
ActvWtF(aft.DP)
0 ... 99999999
+
P170 (0) 0xxx
<2>
100000000
1xxx
31
0 ... (2 -1)
<3>
These position manipulations are
carried out in a handshake
procedure:
Release or correct command
Position manipulation carried out
Acknowledgement
3
Start position
Position sensing for
for absolute encoder
with ser. protocol
Factor: clockwise/,
motor encoder in slot C
(EnDat/SSI)
[327.7]
[500a.4]
X
[815.5]
Src Pos SetV
P172 (0)
[LU]
[815.5] KK SV
Position sensing
Src Set Position
P173 (302)
[815.5] B Y = SV
Src PosCorr'nV
Position correction
P174 (0)
[LU]
[815.5] KK COR
Src Pos Corr'n
P175
.01(303)
[815.5] B Y = Y + COR
.02(304)
[815.5] B Y = Y - COR
Reference point detection
Src Ref SetV
P176 (0)
The reference point is detected
[LU]
KK with the following sequence
of control signals:
Src Release Ref
P177 (307)
1. Referencing enable
[815.5] B is stipulated
2. Negative edge at the
Src Rough Pulse
rough-pulse input
P178 (0)
3. Next rotor zero position
B is detected.
Position value memory
[90]
Digital input 4 (P647=3,4)
1
Digital input 5 (P648=3,4)
SrcRelMValVolts
P179 (308)
B
[815.5]
Conf Pos Sensing
0 . 9999 MOD
P183 (11)
4 5
V2.4
Pos ActV Position actual value with offset
r185.01
Y = Y + X
n n-1 n
Y
X Y
n n
[815.5]
Src Pos Offset
Summation
P184 (0)
[LU]
KK
Pos Test
KK0121
Test connector for
service/diagnostic
purposes
Ack. <3>
Pos Corrrected
B0211
PosMeasV
RefPoint
KK0124
Ack. <3>
RefPoint sensed
B0210
[815]
Measured rotor position
[%] with neg. edge
at rough pulse
r189
Position measured value memory
[LU]
KK0122
Ack. "PosMem Valid"
&
S
B0212
<3>
R
6 7
Function diagram
fp_mc_330_e.vsd
MASTERDRIVES MC
18.01.06
n959.50 = 1
r185.02
Pos ActV
[LU]
KK0120
+
+
Meas. value memory
with offset
r186.02
Position meas.-
value memory
+ with offset
KK0123
+
Measured value memory
r186.01
[815]
[815]
8
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