59
1018854 8/2018 V03
6.22.4 M128S
Multi-turn absolute motor feedback system with incremental
SIN / COS signals and SSI data interface
Table 59.1
Ordering code
Symbol
[Unit]
M128S
Manufacturer's designation
GEL
Protocol
SSI (binary)
Power supply
1)
U
b
[VDC]
5 … 30
Power consumption (without load)
1)
P [W]
0.1
Current consumption buffering (at 25 °C)
I [μA]
40
Incremental signals
u
pp
[V
ss
]
1
Signal form
sinusoidal
Number of pulses
n
1
128
SSI data word length
29 bit
Absolute position / revolution (motor side)
3)
131072 (17 bit)
Number of revolutions
4096 (13 bit)
Battery back up
(internal battery available)
Available memory in EEPROM
[Bytes]
-
Battery service life
4)
[a]
10
Recommended encoder replacement interval
[a]
6
Accuracy
1)
[arcsec]
±360
Resolution of the absolute value (output side)
Gear ratio
i [ ]
30
50
80
100
120
160
[arcsec]
0.4
0.2
0.2
0.1
0.1
0.1
Number of revolutions (at output side)
136
81
51
40
34
25
Incremental resolution (motor side)
2)
inc [ ]
32768
Resolution (output side)
2)
Gear ratio
i [ ]
30
50
80
100
120
160
[arcsec]
1.32
0.79
0.49
0.40
0.33
0.25
1)
Source: Manufacturer
2)
For Interpolation with 8 bit
3)
Increasing position values
- for rotation in clockwise direction, looking at the motor shaft
- for rotation in counter clockwise direction, looking at the output flange
4)
Typical service life with 10 h/day in normal operation, battery temperature 25 °C and a self discharge of 1 %/a.
The use as a singleturn absolute motor feedback sytem is not intended.
INFORMATION
ADVICE
The internal battery can not be replaced!
