Fagor DDS Series Hardware Manual page 166

  Drives
3.
180
DDS
HARDWARE
Ref.1912
· 166 ·
W i th exter nal absolute feedback device
15 5
10
14
4
9
13
3
8
12 2
7
11
1
6
F. H3/121
X3 connector. Signals sent by an external absolute feedback device.
90° PHASE-SHIFT V
OH
V
OL
V
A
V
B
F. H3/122
Characteristics of the square TTL signals and 1 Vpp sinusoidal signals.
RS-485
N= 32 bits; T= 1µs to 10 µs; t1 > 1µs; t2= 20 µs to 35 µs.
Logic levels, according to EIA-485.
F. H3/123
Characteristics of absolute signals in an SSI communication.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
> 2.5 V
90° PHASE-SHIFT
< 0.5 V
V
A
V
B
20 µm
t
V = V : 0.6 Vpp - 1.2 Vpp
A B
Centering < 6.5%
V / V ratio: 0.8 Vpp - 1.25 Vpp
A B
A
A
B
B
I0/DATA
I0/DATA
+ 485/CLK
- 4 8 5 / C L K
+ 5 V DC
+ 5 V DC
·SENSOR·
GND
GND
·SENSOR·
N. C.
+ 8 V DC
CHASSIS
1Vpp
t