Rockwell Automation 2098-IPD-xxx Ultra5000 Intelligent Positioning Drives Installation Manual User 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)