3
TERMINAL DESCRIPTIONS
GND
Negative input (or ground) from the power supply.
AC-DC
A.C. 16 - 24 Volt or D.C. 12 - 24 Volt positive input
from the power supply.
DTA
Data line to encoder (white wire on keypads).
LED
Output to drive a LED to indicate door unlocked.
ELC
(Electric Latch Control) 5 Amp relay output. The
ELC relay is used to control the door
locking/release mechanism. The relay can be
programmed as either Normally Open for
fail
secure
applications (power applied to
open
door)
or Normally Closed for
fail safe
applications
(power applied to
lock
door).
DOOR
This input requires a normally closed switch
connected to ground, typically a reed switch
attached to the door. The DOOR input is used by
the PAC1 to monitor when the door is physically
open (not unlocked). In order to use this input it
must first be enabled (via memory 84, refer to
page 15) and a normally closed (when the door is
closed) door switch (or monitored lock contacts)
must be connected between DOOR and GND.
The DOOR input is used to detect when the door
has been opened for use by the door forced open,
Door Open Too Long and automatic relock
functions.
DOTL
(Door Open Too Long) 1 Amp Normally Open
relay output, operates when a DOTL or Door
Forced Open alarm condition occurs.