Rockwell Automation 2098-IPD-xxx Ultra5000 Intelligent Positioning Drives Installation Manual - Manual (Page 52)

Publication 2098-IN001E-EN-P — April 2002
2-26 Ultra5000 Connector Information
The Ultra5000 supports both TTL and Sine/Cosine encoders. The
following table provides a description of the AM, BM, and IM inputs
for TTL encoders.
The following table provides a description of the AM and BM inputs
for Sine/Cosine encoders.
Parameter Description Minimum Maximum
AM, BM, and IM
ON State
Input Voltage
Input voltage difference between the +
input and the - input that is detected as
an ON state. +1.0V +12.0V
AM, BM, and IM
OFF State
Input Voltage
Input voltage difference between the +
input and the - input that is detected as
an OFF state. -1.0V -12.0V
Common Mode
Input Voltage
Potential difference between any
encoder signal and logic ground. -7.0V +12.0V
DC Current Draw Current draw into the + or - input. -30 mA 30 mA
AM, BM Input
Signal Frequency
Frequency of the AM or BM signal
inputs. The count frequency is 4 times
this frequency, since the circuitry counts
all four transitions. — 2.5 MHz
IM Pulse Width Pulse width of the index input signal.
Since the index is active for a
percentage of a revolution, the speed
will determine the pulse width. 125 nS —
AM / BM
Phase Error,
2.5 MHz Line
Frequency
Amount that the phase relationship
between the AM and BM inputs can
deviate from the nominal 90°. -22.5° +22.5°
AM / BM
Phase Error,
1 MHz Line
Frequency
Amount that the phase relationship
between the AM and BM inputs can
deviate from the nominal 90°. -45° +45°
Parameter Description Minimum Maximum
AM and BM
Input Signal
Frequency
Frequency of the AM or BM signal inputs. — 100 kHz
AM and BM
Input Voltage
Peak-to-peak input voltages of the AM and BM
inputs 0.5V (p-p) 2.0V (p-p)