Rockwell Automation 2090 Ultra3000 Installation Manual User Manual

Page 83

Advertising
background image

Publication 2098-IN003E-EN-P — April 2004

Ultra3000 Connector Data

2-41

The Ultra3000 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

+7.0V

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

-7.0V

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

Sine and Cos

Input Signal

Frequency

Frequency of the Sine or Cos signal inputs.

100 kHz

Sine and Cos

Input Voltage

Peak-to-peak input voltages of the Sine and Cos
inputs

0.5V (p-p)

2.0V (p-p)

Advertising
This manual is related to the following products: