Download User Manual for eXL10 OCS

exl10 User Manual
The analog inputs on the eXL10 OCS allow voltage or current measurement from a variety of devices.
The voltage or current mode is set though jumpers on the unit and settings in Cscape. Each channel can
be separately configured for voltage or current mode.
The analog inputs have a digital filter that can be used to filter electrical noise that may be unavoidable
in some installations. The downside to digital filtering is the inputs will respond more slowly to sudden
changes in the actual input.
10.7.1 Common cause of analog input tranzorb failure, Models 2,3 & 4
If a 4-20mA circuit is initially wired with loop power but without a load, the analog input could see 24Vdc. This is
higher than the rating of the tranzorb.
This can be solved by not connecting loop power prior to load connection or by installing a low-cost PTC in series
between the load and the analog input.
Figure 10.7 – Analog input tranzorb - troubleshooting
10.8
Universal Analog Inputs Model 5
Note: See the data sheet for the eXL10 OCS model being used for jumper settings and see the
appropriate pages in this manual (see Index) for details on how to use Cscape to configure the digital
filtering.
The universal analog inputs provide a high resolution, very flexible interface for a variety of analog
inputs. These inputs include voltage, current, thermocouple, RTD and millivolt. Each channel can be
configured separately using jumpers and configuration settings in Cscape.
Like the standard analog inputs, these inputs have a digital filter that can be used to filter electrical noise
that may be unavoidable in some installations. The downside to digital filtering is the inputs will
respond more slowly to sudden changes in the actual input.
10.9
Universal Analog Inputs Model 6
Universal Analog Inputs
The Universal Analog Inputs on the model 6 IO board are unique from other Horner X-series input/output
cards in that they are configurable through the module configuration instead of having to change jumper
settings in order to setup the input type. To configure the Universal Analog input type:
1) Select Analog In to access the Analog Input Configuration menu.
2) Select any of the Analog input types from the dropdowns by clicking the down arrow beneath
each corresponding Channel, as seen below:
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