AEI DK-2891A, User Manual

SYSTEM REAL-TIME-CLOCK                                                                      (Location 55)

This 24 hour real-time-clock provides the daily time base for starting and stopping the function of 

inhibition to relay output 1 (mainly for electric door lock strike).

No real-time-clock setting is required if daily start-stop inhibition at Location 56 is not 
enabled.

(1) LOCATION

Key in Location 

(2) CURRENT REAL TIME

                        – The current time in Hour and Minute. The allowed time figure is 

00:00 – 23:59

The time setting is based on 24 hours daily with the first two digits for hours and 

the last two digits for minutes. The time in second always starts at 0 0.

(3) VALIDATION

Press 

 key once. 

Two-beep confirms the setting and the clock starts to count in 24 hour basis from the programmed 

current time.

Programming Examples:

a) Set the current time of “10:30” (AM) to the keypad ----  

b) Set the current time of “6:45” (PM) to the keypad ------

IMPORTANT NOTE:

1) The real-time-clock stops after power failure, which makes the real-time inhibition loses 

its time base. 

It is necessary to re-program the system’s real-time-clock

 unless the 

keypad is back up with UPS.

2) The keypad gives 

warning beeps of 3 fast beeps / 5 seconds continuously after 

power failure

 until the real-time-clock is re-programmed.

3) No “

after power failure warning beep

” will be given if 

Location 56

 is not programmed 

with Start/Stop times.

4) Suggest to program the clock every 3-6 months to keep time accuracy; or when time 

deviation is found.

CURRENT REAL TIME

VALIDATION

LOCATION     



 



(3)

HOURS    MINUTES

(2)

(1)



 



   

   

START & STOP TIMES FOR DAILY INHIBITION OF OUTPUT 1                (Location 56)

Setting with start and stop times into the keypad, the real-time inhibition period for output 1 will 

recycle daily until the time settings are cleared. 

This function works with the real-time-clock. Set up the real-time at Location 55 is necessary.

For safety reason, the Egress Button is designed always valid. The door lock (controlled by output 

1) can be opened with it at anytime during inhibition.

(1) LOCATION

Key in Location 

(2) START TIME

                     –  Set the real-time inhibition starting time in Hour and Minute. The allowed time  

figure is 

00:00 – 23:59

The starting time is based on 24 hours daily with the first two digits for hours and the last two digits 

for minutes. The time in second always starts at 0 0.

(3) STOP TIME

                        –  Set the real-time inhibition stopping time in Hour and Minute. The allowed time 

figure is 

00:00 – 23:59

The stopping time is based on 24 hours daily with the first two digits for hours and the last two digits 

for minutes. The time in second always starts at 0 0.

(4) VALIDATION

Press       key once. 
Two-beep confirms the setting.

STOP TIME

START TIME

VALIDATION

LOCATION     





(4)

(3)

 

HOURS    MINUTES

(2)

(1)

 

HOURS    MINUTES



 

 





