User's Manual

UL-801 Installation Manual
Page 20
23-20-06 15 December 2011
Door n Closed
Door n Closed Options
Active State Active Inactive
Ground Door n is closed Door n is open
Open Door n is closed Door n is open
NOTE: If more than one door discrete input is wired and configured, the inputs are logically
AND’ed together by UniLink to determine approximately when "all doors are closed".
Discrete Outputs
UniLink provides 14 discrete outputs. Each discrete output is capable of current sinking up to
500mA, to drive relays, lights, and trigger a variety of aural warning generators.
Basic UniLink Discrete Output
Configurable Discrete Outputs
The discrete output signal types and active states (in other words, whether the signal state is
active when the input is open or ground) are configurable.
FANS Visual (when FANS is enabled)
FANS Visual
Active State Active Inactive
Ground
(Recommended Configuration)
FANS ATC annunciator on FANS ATC annunciator off
Open FANS ATC annunciator off FANS ATC annunciator on
NOTE: 1. The ATC Annunciator power is connected to the aircraft 28 VDC.
2. This annunciator is used to alert the crew of an incoming FANS ATC message.
ENABLE
THERMAL
LIMIT
IN
N
V
CC
<<1
12 VDC
DISCRETE
OUTPUT
NOTE: THE ABOVE CIRCUIT IS INTERNAL TO UNLINK.