Chapter 2
Installation
National Instruments UMI-7774/7772 User Manual
2-2
ni.com
Optional Equipment
National Instruments offers a variety of products for use with the
UMI-7774/7772, including the following:
•
Mounting accessories. Refer to the
section for information about specific equipment for each available
mounting package.
•
Se24 V power supply for isolated I/O.
•
Additional SHC68-C68-S cable (0.5 m or 2 m) with 68-pin VHDCI
offset male connectors on both ends. Use this cable to connect the
digital I/O connector on the National Instruments motion controller
to the digital I/O connector on the UMI-7774/7772.
•
9-, 15-, and 25-pin D-SUB to flying lead cables (part number
190911-04, 19012-04, and 19013-04). Use these cables to connect the
UMI-7774/7772 D-SUB connectors to third-party drives and feedback
devices.
Before Getting Started
This section provides information about noise considerations and safety
guidelines as well as instructions for unpacking the UMI-7774/7772.
Noise Considerations
Before connecting the UMI-7774/7772, verify that all system components
are grounded correctly and that all wiring is properly shielded. Do
not
connect high-voltage wires and low-level signals to the same channel.
The following list includes additional noise considerations.
Caution
Failure to follow these precautions may result in system instability and may cause
permanent damage to system components.
•
Keep high voltage lines, such as AC power cables and motor drive
cables, away from low-level signals, such as encoders and limits.
•
Use twisted pair cable for differential signals, such as encoders.
•
Ensure that all cables connected to the UMI-7774/7772 include a
braided shield.
•
Use hoods with internal metallic shielding for D-SUB connectors.
