Operation
28 AC-Q4x Series Installation and Programming Manual
The function of the REX button depends on the Lock Strike relay,
whether it is programmed for failsafe 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.
Failsafe 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.
4.6 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.
If the BL-D40 receives a tamper event signal, it activates a tamper
output and a strobe light. The Siren Time can be easily programmed
in the controller from 0 to 9 minutes.
The tamper event can activate the auxiliary output if the controller is
in Auxiliary Mode 3 (see Table 3).
4.7 Lockout Feature (Keypad/Card Tamper)
If the controller is presented with wrong codes (PIN or card)
consecutively several times, the unit goes into Lockout mode.
When a lockout occurs, the controller keypad and reader are de-
activated so no codes can be entered until the set lockout period
expires.
During Lockout mode, the left LED is Off, the right LED flashes red,
and the controller beeps every two seconds.
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