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Rockwell Automation Publication 1794-IN102D-EN-P - July 2018
FLEX I/O AC Digital Input Modules
3. Make sure the pins on the bottom of the module are straight so they will
align properly with the connector in the terminal base.
4. Position the module (4) with its alignment bar (5) aligned with the
groove (6) on the terminal base.
5. Press firmly and evenly to seat the module in the terminal base unit. The
module is seated when the latching mechanism (7) is locked into
the module.
Connecting Wiring for the 1794-IA8
1.
For 1794-TB2, 1794-TB3, or 1794-TB3S
– Connect individual input
wiring to even-numbered terminals on the 0...15 row (A) as indicated in
the
Wiring Connections for 1794-IA8
table.
For 1794-TBN
– Connect individual input wiring to numbered
terminals on the 16...33 row (B) as indicated in the
Wiring Connections
for 1794-IA8
table.
2.
For 1794-TB2
– Connect the associated 120V AC power lead (L1) of
the input device to the corresponding odd-numbered terminals on the
0...15 row A for each input as indicated in the
Wiring Connections for
1794-IA8
table. (The odd-numbered terminals on row A are internally
connected to 120V AC L1.)
For 1794-TB3 or 1794-TB3S
– Connect the associated 120V AC
power lead (L1) of the input device to the corresponding odd-numbered
terminals on the 34...51 row (C) or to the corresponding terminal on
row (C) for each input as indicated in the
Wiring Connections for
1794-IA8
table. (The odd-numbered terminals on row (A) and the
terminals of row (C) are internally connected to 120V AC power L1.)
WARNING:
If you insert or remove the module while backplane power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.