57
1.9 Determination
of
an alarm condition
At door terminal 1337-xx and at the terminal module 1370-10 it is possible to determine the cause of an alarm
as long as the alarm is still active.
To do this, proceed as follows. First acknowledge the alarm by turning the key-operated switch at the terminal
momentarily to the left. When the alarm criterion still exists, the green LED begins to flash and the yellow LED goes
out. Subsequently turn the internal key-operated switch first to the left, then hold, and note the display at the control
terminal. Repeat the same process when turning the key to the right. The displays at the control terminal provide
an indication of the cause of the alarm. After this has been confirmed, the door can be locked again at the key-
operated switch, i.e. the system returned to its basic status.
Table to ascertain the alarm condition:
Key-operated switch actuated after:
Criterion for actuation
Left
Right
Termi
nal
LED
red
green
yellow
red
green
yellow
1
Sabotage at the terminal
or control unit
2
Ç
Sabotage at the door (*)
32
È
Emergency open
(was unlocked)
É
Emergency open
(was locked)
Ê
Central emergency open
(720-32)
(was unlocked)
Ë
Central emergency open
(720-32)
(was locked)
Ì
No Locked
acknowledgement
15
Í
External emergency
unlocking
(fire alarm system)
17
Î
Smoke detector line
45-46
Ï
D0019203T0000200
(*) In this case, the green LED does not flash after acknowledging the alarm. However, if the door contact remains
opened, a locking command is not accepted.
The same applies if a door-open alarm has been initiated because the door remained open too long after a
temporary release.
In case of a power failure and switch over to battery operation, the yellow LED starts to flash and the relay
for an external alarm picks up. The door remains locked.
Acknowledgement of the alarm deletes the external signal. At the terminal, however, all switching and
display functions are retained, although the yellow LED continues to flash until the power supply is
restored.
1
The numbers in this column refer to the sections of the following chapter.