Page
17
- Installation Manual
24805490/11-01-2013 319F90C
ver
.
1.2 -
The data and information in this manual may be changed at any time with no obligation on BRAHMS’
s par
t t
o notify anyone of this
ENGLISH
BUS RS-485
For cabling to the RS-485 bus see chapter 4.2.
INPUTS
To cable the inputs see chapter 4.3.
U1 PROGRAMMABLE OUTPUT (positive)
A short circuit to the GND with active output for an extended time may lead to breakage of the protective resistor.
U1 is freely-programmable output that supplies a positive when
activated:
•
U1 ON = 13.8 Vdc
•
U1 OFF = not connected
It is factory-programmed as a TC to abate microwaves when
system is switched off (U1 = OFF if at least one area is on during
out times; U1 = ON if the system is completely switched off.
The output is protected by a 100 ohm resistor.
It may also be used to command sirens or other roles.
U2, U3, U4 (Open Collector) PROGRAMMABLE OUTPUTS
U2, U3, U4 are freely-programmable Open connector outputs
that provide a negative when activated:
•
U2, U3, U4 ON = 0 Vdc
•
U2, U3, U4 OFF = not connected
The outputs are protected by 100 ohm resistors.
A 12 V DC short circuit with active output for an extended time may lead to breakage of the protective resistor.
Siren requiring power supply
If you wish to command a relay via an Open Collector output or
relay output you will need to add the 1N4007 diode parallel to
the relay coil.
