Installation and Maintenance Manual
43
Vehicle Detector Configuration & Anti-Tailgate Modes
Standard and Anti-tailgate modes are selectable under item [dL__] in the Installer Menu
(See installer menu #23 described on page 23 and 26)
The detector function modes that result in Anti-Tailgating logic (modes 3 & 4 below) require the use
of a separate inner and outer obstruction detectors.
In order to use any vehicle detector logic mode other than mode 1, all the loops must be placed with
the geometry and spacing as shown in the loop layout drawings in Appendix
Mode 1: (Default) An input from either the Free Exit, OOLD, IOLD or the Shadow detector will hold
the gate open, reset the close timer, and block all close inputs.
Mode 2: Same function as mode 1, except the close timer is allowed to time out, even with the Free
Exit, OOLD, IOLD or Shadow detector inputs active. If the close timer has counted to zero, the
gate will close when all detector inputs are clear.
Mode 3: Same functions of mode 1, however the close timer is forced to zero when both the
OOLD & IOLD are tripped simultaneously. Additionally, any other close inputs are memorized and
the gate closes immediately when all open commands and vehicle detector inputs are clear.
Mode 4: Full Anti-tailgate logic. Same as Mode 3 functions, plus the gate will stop during the
opening cycle when both the OOLD & IOLD are tripped simultaneously. When the OOLD & IOLD
loops are cleared, the gate closes immediately. The OOLD and IOLD can be individually set so
that, if tripped while closing, the gate may pause only or reverse to reopen. In this mode, the free
exit detector input, ELd, is blocked while the gate is closing.
