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38
EN
You can set other times via
• the
power supply
10-80X
• the
service device
10-870
• the
relay
10-83X
Also see the manuals of the respective devices.
5. TROUBLESHOOTING
In case of problems, always first check whether the following voltages are present with a multimeter:
• between b and a: approx. +24V DC;
• between b and P: approx. +24 V DC;
Error
Cause
Check and/or solution
Negative tone when
pressing the bell push
button
Error in the programming
Erase programming and perform again.
Accompanying internal unit is
not properly installed.
Check the wiring.
Installation in programming
modemode
Exit programming mode.
There is a call, but no
ring tone, and the red
LED lights up.
Call suppression is acti-
vated.
Press the key for call suppression. The red LED
goes out and call suppression is deactivated.
Due to noise at the
external unit, the
communication is dif-
ficult to understand.
Noise at the external unit
distorts the voice signal.
Press and hold the speech key while you speak
with your visitor. Release the key to allow your
visitor to speak.
A high-pitched tone
is heard during the
communication.
The external unit is not pro-
perly adjusted.
Adjust the potentiometers for the speaker and mi-
crophone on the internal or external unit until the
high-pitched tone disappears.
6. TECHNICAL DATA
Mains supply .......................................24V DC ± 8%
Material ...............................................ABS
Dimensions .........................................148 x 98 x 16 mm
Weight ................................................180g
Permissible ambient temperature ..........0° to 40°C
Power consumption in operation ...........3-wire: I(P) = 100mA
2-wire: I(a) = 98 mA
Stand-by power consumption ...............3-wire: I(a) = 0.4 mA, I(P) = 2mA
2-wire: I(a) = 2.2 mA
Colour .................................................White
10-520 Installation manual internal audio unit