2N Lift emergency phone 2N LiftNet - Manual, 1446 v1.8.3 - Manual (Page 32)

Lift Cabin Audio Unit
– Universal
2.2
32
ALARM Button Connection
Requirements
The ALARM button design (colour, symbol, button surface, mechanical run) and
location have to meet the requirements of the particular installation.
Button control
Requirements
 The ALARM button has to be equipped with a normally open (NO) or normally
closed (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 a voltage source other than the NO/NC contact.
 If one of the ALARM contacts is connected to another circuit, appropriate
isolation strength according to applicable standards has to be ensured
between the contacts.
Instructions
1. Leave the ALARM terminal in the LOW position (3).
2. With a normally closed contact, leave jumper (12) – right in the default
position.
3. With a normally open contact, switch jumper (12) – right into the HIGH
position.
Voltage control
Requirements
 DC 12 to 48V voltage
 The voltage signal has to be active even in the case of power failure.
Instructions
1. Switch the ALARM terminal by two pins up into position (2).
2. For activation by voltage connection, leave jumper (12) – right in the default
position.
3. For activation by voltage disconnection, switch jumper (12) – right into the
HIGH position.
Caution
 Jumper setting, as printed on the unit cover of pre-production samples, is
only valid for CANCEL and wrong for ALARM.
 See above for the proper setting.
Warning
 Ignoring the instructions above may lead to product damage.