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The process cables are connected to screw terminals (terminal blocks) on the connection units
or directly to the I/O units.
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The connection unit consists of a circuit board which is to be located on a mounting bar in the
backplane of the cabinet. See example in
You can distribute the connection unit 3 - 15 m if you use shielded cables to join the I/O board.
Mounting bars are available in two models for 19-inch and 24-inch widths.
Connection units have different widths. For dimensions and other technical data, see the
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.
A connection unit is provided with terminal blocks to connect external signal cables.
Normally, a connection unit has additional terminals for power distribution to sensors and
actuators. Generally, you can disconnect the terminals individually or group by group to isolate
the I/O channels from the process for fault tracing and test measurements.
Circuits for interference suppression, fuses and, for analog inputs, a shunt resistor, are located
on the connection unit. The shunt resistor is located so that you can replace an analog input
board without breaking any current loops.
A connection unit relates to an I/O board in different ways. The basic arrangement is that one
connection unit corresponds to a specific I/O board. Sometimes two or more connection units
are used to adapt to a single I/O board application. For example, the need of different rated input
voltages to a digital input multi-channel board.
Two I/O boards of different categories (for example, DI and DO) are used to support an object
oriented type of connection unit. An object oriented connection unit facilitates the connection of
field cables without using any marshalling or process cable slit-up. Process objects like motors
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Connection to process
Connection cable
Mounting bar for
connection units
to S100 I/O board in subrack
“Internal Cable”
Summary of Contents for Advant Controller 450
Page 1: ...Advant OCS with Master software GYDQW RQWUROOHU User s Guide 3BSE 002 415R701 Rev A ...
Page 26: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xvi ...
Page 30: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xx ...
Page 488: ... GYDQW RQWUROOHU 8VHU V XLGH SSHQGL DUGZDUH 0RGXOHV A 48 3BSE 002 415R701 Rev A ...
Page 508: ...Advant Controller 450 User s Guide Appendix D Item Designations D 12 3BSE 002 415R701 Rev A ...
Page 518: ...Advant Controller 450 User s Guide Appendix F Load Calculation F 4 3BSE 002 415R701 Rev A ...
Page 522: ...Advant Controller 450 User s Guide Appendix G Memory Calculation G 4 3BSE 002 415R701 Rev A ...
Page 528: ...Advant Controller 450 User s Guide Appendix H Halt Codes H 6 3BSE 002 415R701 Rev A ...
Page 562: ...Advant Controller 450 User s Guide Index iv 3BSE 002 415R701 Rev A ...
Page 563: ......
Page 564: ...3BSE 002 415R701 Rev A March 2000 ...