12 Digital Expansion Terminal Block CompactBlock LDX I/O
Publication 1790-IN005C-EN-P - January 2015
Troubleshoot with the Indicators
Use the I/O status indicators to troubleshoot your expansion blocks:
Specifications
The following table contains specifications that are common to all of the blocks in this
document. Individual base block specifications are detailed after this table.
Universal DC Input Expansion Block – 1790-T16BVOX
I/O Status Indicators
Indicator Status
Description
Output
status
Off
Output not energized
Solid green
Output energized
Input
status
Off
No valid input
Solid green
Valid input
Attribute
Value
Number of inputs per
expansion block
16 points, sinking or sourcing
Indicators
16 green – Input status
Common type
8 points/2COM (non-polarity)
On-state voltage
9.6V DC min
24V DC nom
28.8V DC max
Off-state voltage, max
5.0V DC
On-state current, max
8 mA per channel @ 28.8V DC
Input signal delay, max
OFF to ON
ON to OFF
10 ms
10 ms