Digital Expansion Terminal Block CompactBlock LDX I/O 9
Publication 1790-IN005C-EN-P - January 2015
5.
Replace the expansion covers on all blocks.
Wire the Expansion Blocks
The following figures show the wiring information for the expansion blocks.
1790-T16BVOX Input Expansion Block Wiring Diagram
•
For inputs 0…7: Sinking inputs
– wire COM 0 (pin 9) to Field Power (-) GND
Sourcing inputs
- wire COM 0 (pin 9) to Field Power (+) 24V DC
•
For inputs 8…15: Sinking inputs
– wire COM 1 (pin 11) to Field Power
(-) GND
Sourcing inputs
– wire COM 1 (pin 11) to Field Power (+) 24V DC
Note:
both COM 0 are internally connected - COM 0 is used for inputs 0…7,
COM 1 is used for inputs 8…15. Both COM 1 are internally connected.
IMPORTANT
Input and output wiring must be in accordance with Class 1, Division 2
wiring methods and in accordance with the authority having jurisdiction.
Compact
Block LDX
1790-16BVOX
DC INPUTS
EXPANSION UNIT
16 INPUTS-DCPOWER
0
7
DC OUTPUTS
0
7
Compact
Block LDX
1790-8BV8V
DC INPUTS
MOD NET
STATUS
8 INPUTS/8OUTPUTS-DC POWER
0
7
DC OUTPUTS
0
7
To install plug, gently pull
and swing cover inward
Red strip must be on bottom
of expansion cable
20
18
16
14
12
10
8
6
4
2
19
17
15
13
11
9
7
5
3
1
IN15
IN11
COM1
IN7
IN3
IN13
IN9
COM0
IN5
IN1
IN12
IN8
COM0
IN4
IN0
IN14
IN10
COM1
IN6
IN2