Mitel 430 - Page 140

Installation
140
Mitel 415/430 as of R4.1
syd-0580/1.2 – R4.1 – 08.2016
Tab. 66 Connections for the options card ODAB
Connection for door intercom with 600 Ohm speech path
Fig. 64 Schematic circuit diagram
Points to be observed for the connection as indicated in Fig. 64:
• The door intercom system requires an external power supply.
• The signal circuit does not require a power supply.
• The speech path (DC-free) is connected to Ta and Tb.
• The door intercom system is switched on via the TS contact output.
• The door release is actuated via the TO contact output.
Warning
– The bell key switch does not require an external power supply, but must have a floating con-
nection.
IO port Socket Function Value
– Ta, Tb Floating connection (without power supply) for
2-wire TFE signal
600 Ω
– Ta’, Tb’ Non-floating connection (with power supply)
for 2-wire TFE signal
24 V / 25 mA / 600 Ω
1 KT 1, 2 Bell input 40 V / 4 mA
2 TS1, 2 Floating contact, ”Switch on / off power supply
for door intercom system”
max. 24 VAC, 30 VDC, 1 A
3 TO1, 2 Floating contact, "Door release" max. 24 VAC, 30 VDC, 1 A
TO1
115/230 VAC
Ta’
Tb
Ta
Tb’
TS1
TS2
KT1
KT2
TO2
ODAB
B
A
Bell key switch must
be floating
Door
Speech path
power supply
Speech path
Door intercom (TFE)
Door loudspeaker (TL)