Technical data
Publication 1794-2.1 - January 2000
28 1794-TBN and -TBNF Wiring FLEX I/O and FLEX Integra Product Data
1794-TBN and -TBNF Wiring
1794-TBN and -TBNF Wiring
Alternate Power Input Wiring
Daisy-chaining
Using Adapter
Power Supply
42157
24V dc
Wiring when total current draw is less than 10A
Use this method when wiring all digital
modules and total current draw through
terminal base units is less than 10A.
Daisy-chaining
with a Separate
Power Supply
Note: All modules must be thermocouple or analog modules for
this configuration.
42158
24V dc
Wiring when total current draw is less than 10A
Use this method when wiring
all ac digital modules and total
current draw through terminal
base units is less than 10A.
ac
Separate power supply can be brought in on last module in chain
if necessary. Make sure you do not jumper to adapter if using
this method.
Individually
Powered from
Separate
Power Supply
Wiring when total current draw is greater than 10A
42159
24V dc
24V dc,
120V ac, or
220V ac
1
Separate power supply can be brought in on last module in chain if necessary. Make sure you
do not jumper to adapter if using this method.
1
= voltage
depends on type
of module.
Combination
Daisychain
and Separate
Power Supply
42160
24V dc
Separate power supply can be brought in on last module in chain if
necessary. Make sure you do not jumper to adapter if using this method.
Use this method when wiring
both digital and analog modules.
Analog modules must be wired
separately from “noisy” digital
modules.
24V dc,
120V ac, or
220V ac
1
1
= voltage
depends on type
of module.
Daisy-chaining
Using Adapter
Power Supply
42157
24V dc
Wiring when total current draw is less than 10A
Use this method when wiring all digital
modules or all analog modules when total
current draw through terminal base units
is less than 10A.
Daisy-chaining
with a Separate
Power Supply
42161
24V dc
Wiring when total current draw is less than 10A
Use this method when wiring
all ac digital modules and total
current draw through terminal
base units is less than 10A.
ac
Separate power supply can be brought in on last module in chain
if necessary. Make sure you do not jumper to adapter if using
this method.
Individually
Powered from
Separate
Power Supply
Wiring when total current draw is greater than 10A
42162
24V dc
24V dc,
120V ac, or
220V ac
1
Separate power supply can be brought in on last module in chain if necessary. Make sure you
do not jumper to adapter if using this method.
1
= voltage
depends on type
of module.
C
ombination
Daisychain
and Separate
Power Supply
42163
24V dc
Separate power supply can be brought in on last module in chain if
necessary. Make sure you do not jumper to adapter if using this method.
Use this method when wiring
both digital and analog modules.
Analog modules must be wired
separately from “noisy” digital
modules.
24V dc,
120V ac, or
220V ac
1
1
= voltage
depends on type
of module.