IC-MU150 Datasheet, PDF (45/64 Pages) IC-Haus GmbH – MAGNETIC OFF-AXIS POSITION ENCODER - POLE WIDTH 1.50MM

iC-MU150 MAGNETIC OFF-AXIS
POSITION ENCODER - POLE WIDTH 1.50MM
Rev B1, Page 45/64
Index pulse Z can be programmed in four lengths. The
position of the index pulse in relation to the A/B signals
is shown in Figure 45.
LENZ(1:0)
Code
0x0
0x1
0x2
0x3
Addr. 0x16; bit 7:6
Z-pulse length
90°
180°
270°
360°
Table 79: Index pulse length
ROT_ALL
Code
0
1
Notes:
Addr. 0x15; bit 7
Description
no inversion of code direction
inversion of code direction
no effect in MODE_ST = 2 (raw-data) for the data
output of the serial interface
ROT_POS can change the code direction in
MODE_ST = 0x0 and 0x1, incremental outputs
Table 80: Inversion of the code direction for the serial
interface in MODE_ST = 0x0 and 0x1, incre-
mental outputs and UVW-interface
A
B
Z 360°
Z 270°
Z 180°
Z 90°
-2 -1 0 1 2 3 4
Figure 45: Index pulse length settings
ROT_POS
ROT_POS
Code
0
1
Note:
Addr. 0x23; bit 0
Addr. SER:0x1E; bit 0
ROT_ALL = 0
ROT_ALL = 1
no inversion of code
direction
inversion of code
direction
inversion of code
direction
no inversion of code
direction
no effect in MODE_ST = 2 (raw-data) for the data
output of the serial interface and on UVW-interface
Table 81: Resulting inversion of code direction for the
serial interface in MODE_ST = 0x0 and 0x1,
incremental outputs
The position data code direction of the incremental
output signals ABZ, STEP/DIRECTION and CW/CCW
can be inverted with the parameters ROT_ALL and
ROT_POS. Both parameters are EXOR-gated and to-
gether comprise the internal code direction signal for
the incremental output signals (Figure 46).
ROT_POS
XOR
Serial
Interface
MODE_ST=0x0,0x1
Incremental
Output
ROT_ALL
UVW
Figure 46: Effect of ROT_ALL and ROT_POS on po-
sition data code direction
Note:
Parameter ROT_ALL affects the output of the data
word through the serial interface in MODE_ST = 0x0
and 0x1, the incremental outputs and the UVW-inter-
face.
Parameter ROT_POS affects the output of the data
word through the serial interface in MODE_ST = 0x0
and 0x1 and the incremental outputs.
For the description of the commands ROT_POS and
ROT_POS_E2P see P.56.
Parameter SS_AB must be configured depending on
the maximum speed. With a filter setting of FILT = 0x00
(Table 54), correspondingly higher SS_AB step size
values must be programmed. The maximum possible
resolution of the incremental count signal is reduced
according to the set step size. The FRQ_ABZ status bit
is set in the case of an unacceptable high speed.
SS_AB(1:0)
Addr. 0x15; bit 5:4
Code max FILT max. rotation speed *)
res.
MPC = 0x4 MPC = 0x5
(16/15)
(32/31)
0x0
2¹⁸ 0x0
don’t use don’t use
≥ 0x1 6000 rpm 6000 rpm
0x1
2¹⁷ 0x0
don’t use 3000 rpm
≥ 0x1 12000 rpm 12000 rpm
0x2
2¹⁶ 0x0
6000 rpm 6000 rpm
≥ 0x1 24000 rpm 12000 rpm
0x3
2¹⁵ 0x0
12000 rpm 12000 rpm
≥ 0x1 24000 rpm 12000 rpm
Note: *) FRQAB = 0x0
MPC = 0x6
(64/63)
1500 rpm
6000 rpm
3000 rpm
6000 rpm
6000 rpm
6000 rpm
6000 rpm
6000 rpm
Table 82: System AB step size and limitation of rotation
frequency
The minimum edge distance t_mtd of the ABZ, STEP/DIR
or CW/CCW interface can be limited by setting the max-
imum output frequency with FRQAB. It can be used to
adjust the output frequency to a frequency limit given