Doorphone & Doorlatch Interface - Panasonic Digital Business System Installation Manual

March 1997
Doorphone & Doorlatch Interface
The doorphone and doorlatch interface is a separate unit which should be wall mounted externally to the DBS
CCU. It connects to one exchange line port which must be set for pulse dialling and the 24v and GND terminals
CN23. The doorphone unit supports two doorphones and has two doorlatch interfaces. Since it connects to a single
exchange line only one doorphone and latch can be used at one time. Should the second doorphone be used
whilst the first one is in use the extension talking the first doorphone hears an tone (Ping-Pong) and can either
press 2 to cut off the first call and answer the second or 3 to open the latch.
Doorphone calls which are not answered will be cut off after a pre determined time set by DIP switch settings in
the interface box.
The door latch is trigger is via relays OPENER 1 and OPENER 2. These are normally open relays which close for
a predetermined time set by DIP switches on the interface card. The relay is used as the switch in the latch circuit.
It can handle 1 amp at 30v DC or 50v AC maximum.
Doorphone
Call Time
15 Sec *
30 Sec
60 Sec
* = Initial Setting
Note 1: Switch positions 1 and 2 have no function.
Note 2: CN23 is a 4 pin DDK connection. Pins 1 and 2 provide 24vDC and 3 and 4 provide a ground connection.
Therefore connect to 1 or 2 and 3 or 4.
Note 3: To comply with
connections. Refer to the EMI Filter Installation section of this manual for filter installtion details.
Panasonic Digital Business System - Installation Manual
Figure 16 - Doorphone Interface Connections
DIP SW
3 4 5
ON or OFF OFF
OFF
OFF ON OFF
OFF OFF ON
Table 7 - DIP Switch Settings
EMC directives EMI filters must be fitted as indicated to the Doorphone Interface
Latch
Open Time
6
1 Sec ON or
OFF
3 Sec OFF
5 Sec * OFF
20
DIP SW
7 8
OFF OFF
ON OFF
OFF ON
Issue 5