Encompass 4 Reader System Guide
4-36
Figure 4-24 Sample Circuit Connections for IAG Installations
Sense Output Circuits
The Encompass 4 Reader supports three sets of sense output signals. Two sets – sense
output0 and sense output1
– provide NO or NC sense outputs. The third sense output
set is dedicated for testing and set up of the reader. It is defined as the TAG_LOCK
signal, which indicates a valid tag is in the read field.
These sense outputs are dry contacts that provide
NO and NC sense outputs. The relay
contacts are rated at 42.2V AC peak (30 V
rms
) or 60V DC at 1 A maximum. If con-
trolling an external gate or device requiring high
current, an isolation transformer is
required.
As illustrated in Figure 4-23, sense output0, NC, is located on
the orange/black pair.
Sense output0, NO, is located on the brown/black pair.
As shown in Figure 4-24, for IAG applications, Sense output0 NC, shares a common
return with sense output0 NO.
In Wiegand mode operation, the sense outputs are
not controlled by a predefined out-
put mode.
Table 4-9 lists the cable descriptions and functions for the
interface signals. These
wire pairs can be used or terminated based on the specific project applications and site
requirements.
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