Siemens Sinumerik 801 - Spindle Encoder Interface - X3 (SPINDLE)

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2-18 SINUMERIK 801
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2.3.3 Spindle encoder interface – X3 (SPINDLE)
General The spindle encoder interface (X3) of the SINUMERIK 801 is a 15-pin SUB-D
socket connector.
Table 2-5 Spindle encoder interface X3
Pin Signal Type Pin Signal Type
1 n.c. 9 M VO
2 n.c. 10 Z I
3 n.c. 11 Z_N I
4 P5_MS VO 12 B_N I
5 n.c. 13 B I
6 P5_MS VO 14 A_N I
7 M VO 15 A I
8 n.c.
Signal Description
A; A_N Channel A
B; B_N Channel B
Z; Z_N Zero Reference Mark
P5_MS +5,2V Supply Voltage
M Ground
Signal level: RS422
Signal type
VO Voltage output (supply)
I 5V input (5V signal)
Connectable encoder types
Incremental 5 V encoders can be connected directly.
Characteristics The encoders must meet the following requirements:
Transmission method: Differential transmission with 5 V square-wave signals
Output signals: Track A as true and negated signal (U
a1
,
U
a1
)
Track B as true and negated signal (U
a2
,
U
a2
)
Zero signal N as true and negated signal (U
a0
,
U
a0
)
Max. output frequency: 1.5 MHz
Phase offset between
tracks A and B: 90º ± 30º
Current consumption: max. 300 mA