Function diagram
8
7
6
5
4
3
2
1
fp_mc_327_e.vsd
Position detection
MASTERDRIVES MC
14.10.10
Position tracking/Start position of absolute encoder with mech. gear ratio for motor encoder
- 327 -
V2.5
RESET (y=0)
STORE
TRACK
x
y
Correction/Storage Element -760-
<1>
<1> Refers to mechanical gear ratio, i.e. load
revolutions / motor revolutions.
This gear ratio must likewise be taken into account in the
AVWF factor.
Recommendation:
Same sampling time as for
U950.19 (Multiturn encoder evaluation for motor encoder [260])
To value specified in U813.03
for linear axis, always zero
for rotary axis
Start position value for absolute encoder
(initial value for position detection)
KK100:
Absolute position of multiturn encoder
KK090:
Absolute position
2-pole resolver
Angle from C/D track: Absolute position of opt. encoder with C/D track
P595:
Clockwise/counterclockwise
P183.01:
Inverting of counting direction for position detection
P171:
Resolution of position actual value
P180:
AVWF as numerator/denominator
P169/P170:
AVWF as integer places, decimal places
P146.1:
Zero point offset [in revolutions]
P149:
Configuration protocol
P148.02:
Max. countable revs. absolute encoder
U813:
Configuration of position tracking, motor encoder
Index 1 (0):
0 = Rotary axis,1 = linear axis
Index 2 (15):
Number of overflow incidents at linear axis (max. 15)
Index 3 (0):
Setting value overflow counter, 0 ... 15
(only for linear axis)
EnDat encoder
P149.02 - P148.02: Singleturn resolution of the EnDat protocol
SSI encoder
P148.01:
Singleturn resolution of the SSI protocol
P148.07:
Ratio of singleturn resolution to number of pulses per
revolution
Opt. encoder with C/D track:
P136/P144:
Number of pulses per revolution
For linear encoder (P149.01 = 1xxx ):
P144/P136:
Number of pulses per revolution
P148.05:
Normalization ratio
NOTE:
Encoder overflows are only taken
into account when calculating the
start value if the position tracking
block and the storage element
have been inserted in one time
slot.
Position
tracking
Start position calculation
Overflow counter
1
0
KK0627
Spare connector
KK
U811.01 (0)
Overflow and rev. counter from
correction/storage element
KK0625
Overflow and rev. counter
for non-volatile storage
Current status of
encoder overflow counter
n814.01
Current status of
encoder revolutions
n814.02
B
U812.01 (0)
Set overflow counter
B0070
MeasV valid
Encoder
[260]
B585
Overflow error at linear axis
0xxx = shaft encoder
1xxx = linear encoder
P149.01 Conf. protocol
Mechanical gear ratio
Motor - Load
0...((2^20)-1)
U810.01/02 (1)
Gear ratio
Encoder - Motor
-110...110
P116.01/02 (1)
Value to position detection
n814.03
B070
U203 (0)
.01
KK
U204 (0)
B
.02
B
.03
KK0551
Power On Mode
U205 (0)
U950.76 = __ (20)
U950.74 = __ (20)
1= permanently
