Fagor DDS Series Hardware Manual page 165

X3. Dir ect feedback
Having installed a direct feedback card, X3 is a high density (HD) 15-pin sub-
D type female (F) connector.
15 5
10
14 4
9
13
3
8
12 2
7
11 1
6
F. H3/118
X3 connector. Pinout.
It supports the following signals:
 Square single-ended TTL
 Square differential (double-ended) TTL
 1 Volt peak-to-peak sinusoidal (1 Vpp)
 SSI
 EnDat
and the following frequencies:
 1 MHz with square signals
 500 kHz with sinusoidal signals
The input impedance for sinusoidal signals is 120 .
W ith exter nal incr emental feedback devi ce
15 5
10
14 4
9
13
3
8
12 2
7
11
1
6
F. H3/119
X3 connector. Signals sent by an external incremental feedback device.
V
90° PHASE-SHIFT
OH
V
OL
V
A
V
B
I
0
F. H3/120
Characteristics of the square TTL signals and 1Vpp sinusoidal signals.
1
A
2
A
3
B
4
B
5
I0/DATA
6
I0/DATA
7
+ 485/CLK
8
- 4 8 5 / C L K
9
+ 5 V DC
10
+ 5 V DC
11
GND
12
GND
13
N. C.
14
+ 8 V DC
15
CHASSIS
1
2
3
4
5
6
9
11
15
90° PHASE-SHIFT
> 2.5 V
< 0.5 V
V
A
V
B
I
t
0
V , V : 0.6 Vpp -1.2 Vpp
A B
V : 0.5 Vpp
I0
  Drives
·SENSOR·
·SENSOR·
A
A
B
B
I0
I0
+ 5 V DC
GND
CHASSIS
HARDWARE
t
3.
DDS
Ref.1912
· 165 ·