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Removing the in-house
telephone
16 To remove the housing, press
the lock upwards using a flat blade
screwdriver. The circuit board and
receiver remain on the upper part of
the housing.
Installation
17 Connect in accordance with the
terminal diagram ASTa/641.
18 Terminal diagram for 125 V ver
sion
19 For each call button, a maximum
of two inhouse telephones can be
connected. Connection of a storey
call button (ERT) is only possible with
the storey call button accessory
ZERT 811...
Tö
= door release
ERT
= Storey call button
Li
= Light
Range from the transformer to the
door station max. 50 m/164 ft,
transformer to the in-house tel-
ephone 400 m/1312 ft with 0.8 mm
conductor material.
When operating 2 in-house tele-
phones in parallel, the range reduces
to 200 m/656 ft.
*) Using the light button in the in-
house telephones HTS 811-... the
light contact in the door loudspeaker
is closed for 0.8 seconds. The refer-
ence for this contact is terminal c,
pick-off at terminal Li. Following
completion of the installation, this
function is active without any further
programming. To actuate the stair-
case and/or outside light, according
to VDE regulations a light current
relay or time relay (e.g. ZR 502-...)
must be interconnected. Contact
load max. 15 V AC, 30 V DC,
switching time 0.8 secs.
In parallel to an in-house telephone,
the secondary signal controller
NSC 602-... can be connected, e.g.
for actuation of a radio chime. The
NS 711-... can be operated as an
additional signalling unit in parallel
at an HTS 811-...
It is not possible to connect other
devices such as a DCA 612-... or
HTC 811-...
Lettering
20 Open the nameplate from the
outside, for example using a flat
bladed screwdriver, and carefully
remove the inscription insert. To
insert the nameplate, lock into place
by exerting light pressure.
21 Info sign from the inside, e.g.
open using flat blade screwdriver
and remove inscription field. To
insert, clip in the info sign exerting a
slight pressure.
Troubleshooting
The transformer is fitted with a
thermal fuse on the primary side.
After short circuit or overload
• Disconnect the device from the
power supply for appr. 1 min.
• Remedy the fault.
• Restore the mains power.
Specifications CA 812-...
Contact type: 2 n.o. contact
max. 15 V AC/30 V DC, 2 A
Ambient temperature:
-20°C to +55°C
Protection system: IP 54
Dimensions (mm) W x H x D:
82 x 226 x 33
Specifications TR 603-...
Operating voltage: 230 V AC
+/-10%, 50/60 Hz
Output voltage: 12 V AC
Output current: max. 1.3 A
Fusing: Secondary side with thermal
fuse
Protection system: IP 30
Ambient temperature: 0°C to +40°C
Horizontal pitch (HP): 3
Dimensions (mm) W x H x D:
53.5 x 89 x 60
Specifications HTS 811-...
Dimensions (mm) W x H x D:
90 x 200 x 45
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