ic audio
EV-5000
EN
30
21.2 Application of EV-REL for getting additional switch functions
Besides using EV-REL in invers programming mode for extending zones, it can also be applied in
normal mode for getting additional switch functions.
Any switch functions can be implemented, for instance to trigger control lamps or priority override
relays, switching illuminations and so on.
The global decoder then can have the code lists second page addresses too (of course not the
AAH!). At the single decoders 1 to 4 – as in inverse mode – addresses from the subsequent list of
codes can be set as described before.
The global decoder has no switch matrix, its output will always energise all 4 relays at the same
time.
In addition to the 80 channel bus, in normal mode the inputs of the contact switch matrix T1 to T4
and PRIO can be used. These inputs can be connected to the switch outputs of the EV-P4
subzone call stations for instance. Each of the 5 inputs is to be routed via a 4-pole DIP-switch to
the 4 relays. The switch inputs have high level (+5V) when not activated and are to be connected
to GND for activation.
Sample:
If relay 2 should switch as input T4 will be
grounded, at DIP switch T4 R2 (relay 2)
is to be set to the ON position. All other
switches have to be set to the opposite
(OFF) position.
ON
R1 R2 R3 R4
ON
R1 R2 R3 R4
ON
R1 R2 R3 R4
ON
R1 R2 R3 R4
ON
R1 R2 R3 R4
T1
T2
T3
T4
PRIO
T1
T2
T3
T4
PRIO
0V, GND
