Digital Inputs (Control Contacts) - ASL INTERCOM VAR8 Product Description

8.4

Digital Inputs (Control Contacts)

Contacts 1 to 10
•
2x10 way double stack terminal block (5 mm).
•
Opto-isolated interface with built-in resistor to suit voltages
of +12 to +40 V.
•
The contact is asserted when the opto-isolator is turned on.
It may be used to interface a simple closure, or as a
Sounder Circuit Interface suitable for connecting the Fire
Alarm to the Router for triggering DVA messages.
•
Can be configured for external fault, routing, or route reset.
•
Lower terminal block: Contacts 1 to 5.
•
Upper terminal block: Contacts 6 to 10.
Contacts 1 to 10 are not available when the VAR8 is fitted
with an EFI01 European Fire Interface Card. The EFI01
provides the VAR8 with analogue inputs and digital
outputs.
EOL resistors may be fitted internally, which may be used
for voltage-reversal monitoring for sounder circuit type
interfaces.
Signal
C'n'+
Cn'−
Contacts 11 to 20
•
1x10 way double stack terminal block (5 mm).
•
Opto-isolated interface with built-in resistor to
suit voltages of +12 to +40 V.
•
The contact is asserted when the opto-isolator
is turned on. It may be used to interface a
simple closure, or as a Sounder Circuit Interface
suitable for connecting the Fire Alarm to the
Router for triggering DVA messages.
•
Can be configured for external fault, routing, or
route reset.
Contacts 11 to 20 are only provided on VAR8
Routers which are fitted with the EXP8 Interface
Expansion Board.
Signal
C'n'+
Cn'−
VAR8 and Variants - Product Description
Opto-isolated input +VE connection
As above but –VE connection
Built-in resistor to suit voltages of +12 to +40 V
Opto-isolated input +VE connection
As above but –VE connection.
Built-in resistor to suit voltages of +12 to +40 V
Issue: 02 complete, approved
Page 44 of 54
VAR8
Description
VAR8
Description