Compact Door
Coding Unit
421 - 30
General description
The fully electronic-/microprocessor-controlled compact
door coding unit 421-30 in the single channel version
provides facilities for the connection of one door (one
electric door release). This door coding unit functions with
a numeric code which enables only authorized personnel
to gain access to individual rooms. This numeric code
is amendable at any time without any problem and is thus
adaptable to the respective requirements.
Residing in a robust metal enclosure the compact door
coding unit 421-30 comprises a front panel coding keypad,
code switch, evaluation electronics and power unit. The
code switches are arranged behind the equipment door
which is secured by means of a cylinder lock and which is
accessible only by means of a key. The door coding unit is
usually mounted within hand reach of the door beside the
door frame and is connected to the mains. The appropriate
electric door release is fitted into the door frame in the form
of a counterpart to the door lock. The lead connection
between the door coding unit and the door release is
effected using screened wiring.
Function
The code numbers entered via the keypad are converted
into electrical signals and passed on to the control device.
There they are compared with the programmed data. If
access entitlement is identified the door release relay will
switch to release for a time period (door unlocking period)
that has been preset in the control device.
Door hardware:
Outside pull knob, inside door handle (interchangeable set),
lock with change-over. The room interior can be left at any
time using the door handle due to the afore mentioned door
hardware.
Door releases
The door releases to be utilized together with the door
coding system are the models 1405/1705 or 1405 RR/1705
RR (energized mode) and 3405/3705 or 3405 RR/3705 RR
(nonenergized mode). It is recommended fundamentally to
use only electric strikes with integrated monitoring contact.
Door release in energized mode
The energized mode door release, e.g. 1405, is unlocked
when under voltage. In the event of a power failure the
locking security of the door is guaranteed.
Door release in nonenergized mode:
The nonenergized mode door release,
unlocked when not under voltage. In the event of a power
failure the door provides free access.
Door release with check-back
contacts, ordering suffix "RR"
Automatic resetting of the door release relay when the door
is opened.
Thus the subsequently
immediately relocked.
Technical specifications
1405/1405 RR voltage rating 12 V (voltage tolerance
11 - 13 V) power consumption
200 mA, continuous duty
1705/1705 RR voltage rating 12 V (voltage tolerance
11 - 13 V) power consumption
230 mA, continuous duty
3405/3405 RR voltage rating 12 V (voltage tolerance
11 - 13 V) power consumption
200 mA, continuous duty
3705/3705 RR voltage rating 12 V (voltage tolerance
11 - 13 V) power consumption
230 mA, continuous duty
External door release push-buttons
The door can be opened in the usual way from internal
rooms by means of door release push-buttons provided
on site or externally. The door release is then unlocked via
the preset door unlocking period (rotary function switch for
door unlocking period).
Code switch
The desired 4-digit code number is easily settable via the
code switch on the connection board.
Setting of the door unlocking period
"Rotary function switch for door unlocking period". A rotary
switch is located on the connection board of the door coding
system, the purpose of which is the setting of the door
unlocking period. This setting determines the time period
during which the door can be opened after the correct code
number has been entered. The setting range is selectable
between 1 - 30 seconds.
Graduation 1 increment = 2 secs. door unlocking period
If door releases with check-back position indicator contacts
"RR" are being used (see connection circuit diagram), the
door unlocking period is reset upon the door being opened.
e n g l i s h
e.g. 3405,
position indicator
closed door is
(settable to 30 secs. max.)
is
5