2N Lift8 v1.6.0 - Manual (Page 49)

49
2N TELEKOMUNIKACE a.s., www.2n.cz
®
1.
2.
3.
Bus Connection
Pull the terminal out of connector 1 - Audio units bus, connect the bus audio units
wires and replace the terminal to connector 1. Mind the polarity.
ALARM Button Connection
Requirements
The ALARM button design (colour, symbol, keypad surface, mechanical operation)
and location have to meet the requirements of the particular installation.
Button control
Requirements
The ALARM button has to be equipped with a make or break (NO/NC) contact
that is not connected with any other circuit.
None of the ALARM button terminals may be connected electrically with any other
electrical circuit and no voltage source other than the NO/NC contact may be
connected to them.
If one of the ALARM contacts is connected to another circuit, an appropriate
isolation strength according to the applicable standards has to be ensured
between the contacts.
Procedure
Leave the ALARM terminal in the lower position (3).
If you use a make contact, leave the jumper as it is (5th pin on jumper 12) –
ALARM without jumper fitted (factory setting).
If you use a break contact, fit the jumper (5th pin on jumper 12) – ALARM
inverted – jumper fitted.
Warning
Connection to different, e.g. higher-voltage, cables leads to damage or
destruction of the
. audio unit
Maintain polarity while connecting the to avoid error. audio unit audio unit
Caution
The is powered via a 2-wire bus. Disconnection of these wires audio unit
results in the switch-off. audio unit
Avoid the address duplicity. audio unit