Interfaces
6-17
Installation Manual for Models ODM-005, ODM-005i, ODM-010, ODM-010i, ODM-020 and ODM-020i
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 an active IOUT signal (IOUT=1) cannot be guaranteed during the state AOUT=1, BOUT=1.
Instead, the unbuffered motor encoder signals can be used as shown below. The J2 Breakout Board
assembly connects the motor encoder signals directly to the position feedback of the controller.
Two options are available to achieve European Union EMC compliance when a OMNIDRIVE uses the
J2 Breakout Board Assembly to transfer an unbuffered encoder signal to a control device. Either method
of installation reduces the radiated emissions to an acceptable level. Be aware that either installation
option is in addition to the EMC requirements specified elsewhere in this manual.
•
Install the drive and J2 breakout board assembly (terminal block and cables) inside a
grounded metal enclosure.
- or -
•
Install ferrites of an appropriate rating at the specific locations:
1. J2 Cable – 230 Ohm @ 100 MHz toroid (FerriShield P/N SS28B2032) immediately adjacent to
the J2 connector on the drive.
2. Pigtailed Motor Encoder Cable – 215 Ohm @ 100 MHz ribbon cable clamp (Fair-Rite P/N
2643164051 and clips Fair-Rite P/N 0199001401) over the unshielded conductors.
TIP
If a controller connected to the drive requires the Index Output (IOUT) signal to
be synchronized to a particular state of the A and B Outputs (AOUT and BOUT)
the unbuffered encoder outputs from the motor must be used.
Intro
F
IGURE
6.22
J2 Breakout Board Assembly - European Union EMC Compliance
TIP
Drives are tested using specific installation methods, and the information above
is based on successful tests. If the drives are installed in this manner, then
compliance with European EMC requirements may be expected, although it is
impossible to guarantee that a specific installation will meet EMC requirements
without testing it.
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 asterisk (*) indicates an installation option to comply with EU EMC Directives.
Either a grounded metal enclosure or ferrite cores provide the requisite EMC protection.
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