B1 and B2 User’s Guide
11
11
Chapter 4
3: Installation and Wiring
Physical Installation
Mounting
The B1 or B2 Optomux unit can be mounted in any attitude on any flat surface. The mounting rack
and removable brain board portion of the Optomux unit are supplied with permanently-attached
standoffs. All of the standoffs should be secured for maximum physical strength. Be sure to leave
sufficient space between adjacent controllers for the I/O wiring.
To ensure reliable and trouble-free communications, the following is recommended:
•
Twisted pair wires must be used for the communications wiring. Typical wire types are Belden
p/n #8164, #9728 (4 pair) or equivalent. Use
two
pairs for the data and use one of the wires from
an extra pair for the signal common. The signal common should
not
be connected to ground.
Connect the overall cable shield to ground in one location only.
•
The communication and DC power wiring should be routed or kept separate from any high
voltage field wiring.
Communications Wiring
A complete data link connection at each Optomux unit (except the last in a string) consists of 10
wires: two twisted pairs (4 wires) and a common coming from the computer or previous Optomux
unit, and two twisted pairs and a common going to the next Optomux unit. Use 4-pair cable with
one of the wires from a pair for the signal common. One pair will be unused.
Host to First Optomux Unit
The following figures show two possible connections from the host to the first Optomux unit on the
serial link. A suggested color code is shown to help avoid wiring errors.
Содержание Optomux B1
Страница 1: ...B1 AND B2 USER S GUIDE Form 1574...
Страница 9: ...FOR HELP B1 and B2 User s Guide 4...
Страница 26: ...CHAPTER 3 INSTALLATION AND WIRING B1 and B2 User s Guide 21 21 Figure 2 7 Jumper Addresses...
Страница 29: ...SURGE PROTECTION FOR RS 422 485 COMMUNICATION LINKS B1 and B2 User s Guide 24...
Страница 33: ...TROUBLESHOOTING QUESTIONS AND ANSWERS B1 and B2 User s Guide 28...