Rockwell Automation 2090 Ultra3000 Installation Manual - Manual (Page 92)

Publication 2098-IN003E-EN-P — April 2004
2-50 Ultra3000 Connector Data
Figure 2.54 shows the configuration of the AX Auxiliary Encoder Input
channel. The BX and IX channels have the same configuration.
Note: CW pulses are only counted when the CCW input is low, and
CCW pulses are only counted when the CW input is low.
Figure 2.54
Auxiliary Encoder Input Configuration
Note: For single-ended connections, the negative terminals (CN1 pins
5 and 7) should be left disconnected, and the signal connections
should be made to CN1 pins 4 and 6.
The following table provides a description of the auxiliary encoder
interface.
10k Ω
5k Ω
1k Ω
1k Ω
+ 5 V
+ 5 V
56 pF
COMMON
COMMON
COMMON
AX +
AX -
56 pF
10k Ω
Ultra3000 Drive
Parameter Description Minimum Maximum
ON State
Input Voltage
Input voltage difference between the + input
and the - input that is detected as an ON
state.
+1.0V +7.0V
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
Voltage between an input and logic ground. -7.0V +12.0V
Signal Frequency
Frequency of the AX or BX signal inputs.
Count frequency is 4 times this frequency for
A/B type inputs, and equal to this frequency
for Step/Dir and CW/CCW type inputs.
— 2.5 MHz
Pulse Width
Time interval that a Step/Dir type input or
CW/CCW type input must remain in a single
state for detection.
200 nS —
Setup Time
Time interval that the Direction, CW, or CCW
must be stable before the corresponding
Step, CCW, or CW signal changes state.
200 nS —