Rockwell Automation 1794-IM16_OM16 FLEX I/O 240V AC Input and Output Modules - Manual (Page 2)

2 FLEX I/O 240V AC Digital Input and Output Modules
Publication 1794-IN123B-EN-P - May 2009
Install Your Digital Module
The module mounts on a 1794 terminal base.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 8 as
required for this type of module.
2. Make certain the flexbus connector (3) is pushed all the way to the left to
connect with the neighboring terminal base/adapter.
You cannot install the module unless the connector is fully extended.
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.
Connect Wiring for your 1794-IM16 Module
(using a 1794-TBN Terminal Base)
1. Connect individual input wiring to terminals 0...15 on the 16-33 row (B),
and on the 34-51 row (C) as indicated in Table 1.
Auxiliary terminal blocks are required to distribute 240V AC power (L1) to
each device.
2. Connect 240V AC power (L1) to terminal 34 on the 34-51 row (C).
3. Connect 240V AC common (L2) to terminal 16 on the 16-33 row (B).
4. If daisychaining power to the next terminal base, connect a jumper from
terminal 51 (240V AC L1) on this base unit to terminal 34 on the next base
unit.
5. If continuing AC common to the next base unit, connect a jumper from
terminal 33 (240V common L2) on this base unit to terminal 16 on the
next base unit.
1794-TBN Terminal Base Wiring for 1794-IM16 and 1794-OM16
WARNING
If you connect or disconnect wiring while the field-side 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.
Description Description
1 Keyswitch 5 Alignment bar
2 Terminal base 6 Groove
3 Flexbus connector 7 Latching mechanism
4 Module
ATTENTION
Do not remove or replace a Terminal Base unit when power is applied.
Interruption of the backplane can result in unintentional operation or
machine motion.
ATTENTION
During mounting of all devices, be sure that all debris (metal chips, wire
strands, etc.) is kept from falling into the module. Debris that falls into the
module could cause damage on power up.
1
2
3
4
5
6
7
Table 1 Wiring Connections for 1794-IM16 and 1794-OM16
1794-IM16 1794-OM16
1794-TBN 1794-TBN, 1794-TBNF
Input Input Terminal (1)
(1) Auxiliary terminal blocks are required to distribute 240V AC power L1 to each device.
Output Output Terminal (2)
(2) Auxiliary terminal blocks are required to connect the associated L2 common for each channel.
Input 0 B-0 Output 0 B-0
Input 1 C-1 Output 1 C-1
Input 2 B-2 Output 2 B-2
Input 3 C-3 Output 3 C-3
Input 4 B-4 Output 4 B-4
Input 5 C-5 Output 5 C-5
Input 6 B-6 Output 6 B-6
Input 7 C-7 Output 7 C-7
Input 8 B-8 Output 8 B-8
Input 9 C-9 Output 9 C-9
Input 10 B-10 Output 10 B-10
Input 11 C-11 Output 11 C-11
Input 12 B-12 Output 12 B-12
Input 13 C-13 Output 13 C-13
Input 14 B-14 Output 14 B-14
Input 15 C-15 Output 15 C-15
Input 0 B-0 Output 0 B-0
240V AC L1 Power terminals C-34 and C-51 are internally connected together. Connect 240V AC L1
to C-34
240V AC L2 Common terminals B-16 and B-33 are internally connected together. Connect 240V AC
common L2 to terminal B-16
16 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 51
33
34
L1
L2
L1
L2
B
C
Even Numbered I/O Terminals 0...14
Odd Numbered I/O Terminals 1...15
(1794-TBN shown)
L1 = 240V AC - Connect to terminal C-34
L2 = 240V AC common - Connect to terminal B-16
Use B-33 and C-51 for daisychaining to the next terminal base unit