Rockwell Automation 1771-IQ16 DC (24V) Isolated Input Module Installation Instructions - Manual (Page 2)

DC (24V) Isolated Input Module 2
Publication 1771-5.25 - November 1999
This module must be used in a 1771 series B or later I/O chassis. The
1771-IQ16 is not compatible with the 1771-AL local I/O adapter.
This module contains customer–selectable input filter times to limit
the effects of voltage transients caused by contact bounce and/or
radiated electrical noise. The delay due to filtering ranges from 0ms
to 18.0ms for turning dc inputs on to off. Delay for turning dc inputs
off to on is 0.57ms. The filter time is factory set to 0.57ms. Refer to
”Setting the Input Filter Jumpers” for a description of available filter
times.
This module is designed to operate with dc limit switches, float
switches, selector switches, proximity switches and pushbutton
switches.
The module can be used as either a sink or source input based on the
wiring configuration of the load.
!
ATTENTION: Remove power from the 1771 I/O
chassis backplane and wiring arm before removing or
installing an I/O module.
•
Failure to remove power from the backplane or
wiring arm could cause module damage, degradation
of performance, or injury.
•
Failure to remove power from the backplane could
cause injury or equipment damage due to possible
unexpected operation.
Module Location in the I/O Chassis
Group your modules to minimize adverse effects from radiated
electrical noise and/or heat. We recommend the following:
•
Group analog input and low voltage dc modules away from ac
modules or high voltage dc modules to minimize electrical noise
interference.
•
Place analog input modules and other I/O modules sensitive to
heat away from slot power supplies to minimize adverse heat
effects.
PreĆinstallation
Considerations