Fagor DDS AXD/SPD 2.50 - Page 166

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