81
2.8 Control
inputs
External emergency unlocking (terminal
16-17)
This input can be used for example for connecting
the signal contact of an external fire alarm system as
a normally closed contact.
If no external emergency unlocking function is
planned, a jumper must be inserted here.
Opening this input switches the emergency exit
control unit immediately to alarm, and the door is
unlocked. Acknowledging the alarm at the emergency
exit door terminal (key-operated switch to the left)
switches off the acoustic signal.
By closing the input, the alarm is reset, and the
door locked again provided it is shut.
If the door has been opened, the door monitoring
process is started. After expiry of the monitoring time,
and if applicable the pre-alarm, an alarm is triggered.
Temporary release (terminal 27-28)
This input can be used to initiate a temporary
release with automatic time lapse function using an
external button, corresponding to the sequences
applicable with temporary release from the terminal.
It is used, for example, to release the emergency
exit using an access control system or a door strike
button. The input has a retriggering function.
Permanent unlocking (terminal 29-30)
Using terminals 29-30, the locking system can be
permanently unlocked via an external contact. This
can, for example, be the output contact of a time
switch where permanent unlocking has to be
activated regularly at certain times.
Continuous unlocking is activated when the
contact closes. When the contact opens again, the
door is locked again immediately.
If the contact opens when the door is open, the
"door monitoring" functional sequence is initiated. The
green LED at the door terminal or at the terminal
module starts to flash. After expiry of the door
monitoring time, the pre-alarm - if activated - is
triggered. After its expiry, the alarm is initiated if the
door is still open.
2.9 Signal
outputs
The emergency exit control unit 720-30 / 32 makes two relay outputs available which are guided as floating
switchover contacts to terminals 18-20 and 42-44. These can be used to relay the "Locked" "Unlocked" and "Alarm"
statuses.
The relay contacts can be subjected to maximum loads of 1 A and 24 V.
