Emerson SI-Universal User Manual page 130

3 B, D, R Sinref, Clock
4 B\, D\, R\, Sinref\, Clock\
AB (0), FD (1), FR (2), AB Servo (3), FD Servo(4), FR Servo (5
Type
Maximum input frequency
Line loading
Line termination components
Working common mode range
SC Hiperface (7), SC EnDat (9), SC SSI (11), SC Servo (12)
Type
Maximum Signal level
Maximum input frequency
Maximum applied differential voltage and common
mode voltage range
Resolution: The sine wave frequency can be up to 500 kHz but the resolution is reduced at high
frequency. Table 3-2 Interpolated information based on frequency and voltage level on page 11
shows the number of bits of interpolated information at different frequencies and with different
voltage levels at the drive encoder port
EnDat (8), SSI (10), BISS (13
Type
Maximum input frequency
Working common mode range
Common to All
Absolute maximum applied voltage relative to 0V
* BiSS is not currently supported.
130
)*
)
EIA 485 differential receivers
500 kHz
< 2 unit loads
120 Ω (switchable)
–7 V to +12 V
Differential voltage
1.25 V peak to peak (sin with regard to
sinref and cos with regard to cosref)
See Table 3-2 Interpolated information
based on frequency and voltage level on
page 11.
±4 V
EIA 485 differential receivers
4 MHz
–7 V to +12 V
-9 V to 14 V
SI-Universal Encoder User Guide
Issue: 2