TransCore encompass 4 - Table 14 Sense Input;Output Cabling 13-Pair Assignments

Chapter 4 Installing the Encompass 4 Reader
TransCore Proprietary
4-61
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 Vrms) or 60V DC at 1 A maximum. If controlling an external gate or device requiring
high current, an isolation transformer is required.
As illustrated in Figure 47, Sense input1 allows the Encompass 4 Reader to monitor the status of a
peripheral device. The host computer can then check the status by polling the Encompass 4 Reader.
Output0, NC, is located on the orange/black pair. Sense output0, NO, is located on the brown/black pair.
As shown in Figure 48, 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 output mode.
Table 14 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. To see the alternate wire
(15-pair) assignments, refer to “Table 53 Sense Input/Output Cabling Assignments for Alternate Wire 15-
Pair Cable” on page C–4.
Using Table 14 as a guide to the functions of each of the wire signals, connect the remaining wires to the
appropriate terminal blocks on the terminal strip in the junction box.
Table 14 Sense Input/Output Cabling 13-Pair Assignments
Pair Pin Color Signal Description Typical Function
Blue/ Red
E Blue WGND0
Wiegand
data0
Parking/ access
control applications
F Red WGND1
Wiegand
data1
Parking/ access
control applications
White/ Red
L White Lock
Tag lock
output,
active-closed
Testing maintenance
M Red Lock_RTN
Tag lock
return
Testing maintenance
Green/ Red
N Green Sense Input0
Sense Input0
(loop)
Loop and presence
detection
P Red
Sense
Input0_RTN
Sense Input0
return; not
isolated from
signal ground
Loop and presence
detection