Siemens SIMATIC FM 453, Руководство пользователя

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4-17
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
A, A_N Track A true / negated (incremental encoder)
B, B_N Track B true / negated (incremental encoder)
N, N_N Zero mark true / negated (incremental encoder)
CLS, CLS_N SSI sliding pulse true / negated (absolute encoder)
DATA, DATA_N SSI data true / negated (absolute encoder)
P5EXT Power 5.2 V (encoder)
P24EXT Power 24 V (encoder)
MEXT Power supply ground (encoder)
VO Voltage outlet (power supply)
O Output (5 V signal)
I Input (5 V signal)
Incremental or absolute (SSI) encoders may be connected directly (e.g. digi-
tal-rotary encoders); they are then selected via machine data.
Encoders with SINE/COSINE signals (e.g. length scales) may be connected
by way of an external electronic pulse shaper (EXE) that converts the signals
to 5 V levels.
Both encoders that can be connected directly and EXEs must meet the fol-
lowing requirements:
Incremental Encoders
Transfer procedure: Differential transfer with 5 V rectangular
signals
(such as RS422 standard)
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
)
Maximum output
frequency:
1 MHz
Phase shift, track
A to B:
90
°
30
°
Power consumption: Max. 300 mA
Absolute Encoders (SSI)
Transfer procedure: Synchronous-serial interface (SSI) with
5 V differential-signal transfer
signals
(such as RS422 standard)
Output signals: Data as true and negated signal
Input signals: Sliding pulse as true and negated signal
Resolution: Not more than 25 bits
Maximum transfer frequency: 1.25 Mbps
Power consumption: Max. 300 mA
Signal Names
Signal Type
Connectable
Encoder Types
Encoder Charac-
teristics
Wiring the FM 453