Title: Hardware Installation Guide.pdf
Various OnGuard hardware products provide contact supervision. These inputs require an end-of-line (EOL, 1K±10%) terminator to be installed with the contact to be monitored. This can be configured within the software. Input protection is similar to that of the unsupervised input, however the input is also filtered to reject 50/60 Hz AC coupling.The supervised input can sense contact conditions of SAFE, ALARM, and FAULT. It also accommodates normally closed (NC) and normally open (NO) contacts, which is configurable within the application.1.3Reader Inputs/Outputs1.3.1Reader Data InputReader data input is similar to unsupervised alarm input. Reader data input interfaces to reader DATA 1/ DATA 0 (WD1/WD0) open collector signals and produces a nominal signal swing of 0 to 5 volts.1.3.2Open Collector Output