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U N I V E R S A L U N I T 2 0 - 0 0 0 7
Connection
1
Step 1:
Connect loudspeaker, microphone and buttons.
Distance of the loudspeaker, microphone and buttons from the basic unit: 100 m max.
Buttons may have a common return wire (applies only to 20-0007). To connect the basic electronics
package with the user-interface elements (loudspeaker, microphone and buttons) a shielded cable must
be used. IY-ST-Y or AY-ST-Y. Connect shield to –12 V terminal (see also Seite 2). Mount dial pad at a dis-
tance of 25 m max. (use Behnke patch cable for connecting the dial pad).
Step 2:
Connect door opener to relay 1, if required.
Relay = voltage-free contact = only operates the door opener, without supplying it with electric energy;
the door opener requires its own power supply! Relay 2 is available for further switching functions
(see comprehensive technical manual; avalailable as PDF on the Internet).
Step 3:
Connect 12 V DC – required for 20-0007 (potential-free – use Behnke plug-in power supply 20-9500).
Step 4:
Release both short patch cables connecting the upper with the lower board from the RJ45 jacks on the
upper board.
Step 5:
Connect telephone line (a/b line from analogue PBX extension or analogue direct exchange line) => a long
beep signals the telephone's operational readiness.
Perform configuration (item 2), while observing configuration step 18.
Step 6:
Step 7:
Correctly plug back in again the patch cables into the RJ45 jacks on the upper board.
Main board
Connection board
Subboard
Buttons 1 to 32
a/b
12 V=
Common contact
(buttons)
Microphone
Loudspeaker
Terminals for relays 1
and 2 as well as alarm
input
(For details refer to connec-
tion sketch 20-0006.)
Note:
Do not use terminals
T1 and T2.
12
Button 1
Button 2
Button 3
Button 4
Button 31
Button 32
MIC
To 1st electronics extension 20-0057 (optional)
Telefonbau Behnke GmbH
1
2
3
4
6
7
8
9
T1
MLM A
T2
+MLM C
+MLM B
− MIC +
LS
− MIC +
LS
red
blue
yellow
Optional dial pad
EEPROM
Master processor
Internal
5
∗
configuration and
∗
dialling keyboard
#
0
#
T
Telephone 'ON'
E
L
1
2
3
\
4
5
6
\
7
8
9 i
# +
*
0
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