Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 82)

Publication 1398-5.2 – PDF 1997
6-18 Interfaces
IOUT Signal Generation
The Index output signal (IOUT) is not synchronized to a particular
state of the A and B output signals (AOUT and BOUT). Some
controllers, such as those used in the CNC industry, use the condition
I=1, A=1, B=1 to indicate a home position. In such applications the
encoder outputs from the drive cannot be used, since it cannot be
guaranteed that the IOUT signal will be active during the state
AOUT=1, BOUT=1. Instead, the unbuffered motor encoder signals
can be used as shown in Figure 6.22. The J2 Breakout Board assembly
connects the motor encoder signals directly to the position feedback of
the controller.
Table 6.17: Motor Encoder Output Signal
Analog Out-
put Pin Number Description
AOUT (+)
AOUT (-) J1-7 (+)
J1-8 (-) Motor Output Channels A(+) and A(-). Differential TTL levels
from line driver. Signal resolution is selectable.
BOUT (+)
BOUT (-) J1-9 (+)
J1-10 (-) Motor Output Channels B(+) and B(-). Differential TTL levels
from line driver. Signal resolution is selectable.
IOUT (+)
IOUT (-) J1-11 (+)
J1-12 (-) Motor Output Channels I(+) and I(-). Differential TTL levels
from line driver. Output pulse occurs once per motor shaft
revolution.
Table 6.18: Motor Encoder Output Specifications
Parameter Description Minimum Maximum
Differential Out-
put Voltage Voltage measured between the (+) and (-) pins
with R
L
= 100 Ohm.
2.0 Volts
Output Current Current flowing out of the (+) or (-) pin. -20 mA +20 mA
Figure 6.22 J2 Breakout Board Assembly – European Union
EMC Compliance
Drive
Controller
J2
A,B,I
J2 Breakout Board Assembly
P/N 9101-1392
Pigtailed Motor
Encoder Cable
Grounded Metal Enclosure*
230Ohm @ 100MHz
Ferrite Toroid*
215Ohm @ 100MHz
Ferrite Clamp*
NOTE:
An asterik (*) indicates an installation option to comply with EU EMC Directives. Either
a grounded metal enclosure or ferrite cores provide the requisite EMC protection.