Programming Manual

Table Of Contents
Operation
26 AC-Q4x Series Installation and Programming Manual
3.4 Auxiliary Input and Output
For optimum usability in different applications, the controller’s
auxiliary input and output can be configured in 10 different modes
of operation (see Section 4.9).
3.5 REX Button
The REX button is located within the premises and is used to open
the door from the inside. It is usually located in a convenient
location, such as next to the door or at a receptionist’s desk. The
door chime in the BL-D40 (if enabled) does not sound when the REX
button is used to open the door.
The function of the REX button depends on the Lock Strike relay,
whether it is programmed for fail safe or for fail secure operation.
Fail Secure Operation
From the moment the REX button is pressed, the door is
unlocked until the Lock Strike Release time has elapsed. After
this time, the door is locked, even if the REX button has not
been released.
Fail Safe Operation
From the moment the REX button is pressed, the door is
unlocked until the REX button is released. In this case, the Lock
Strike relay only begins its countdown once the REX button is
released. This feature is designed to keep the door open, when
used in conjunction with fire systems.
3.6 Tamper Feature
If the controller is forcibly opened or the controller is removed from
the wall, a tamper event is triggered. A tamper signal is sent to the
BL-D40 external sounder.