ITV DLK642Lite, Manual

Page: 14 / 32

14 Integrated Technical Vision Ltd http://www.itvsystems.com.ua
Bell
+12v up to
500mA
PW R+ TM N C1 C1 N O1 N C2 C2 N O2 SA BEL
X1
power good
battery good
~
AC ~
+
12 V
GN
D
PW
G
ACG
GND
+12 V
Power
supply
block
R
n
2 кОм
Z8 -PW R+ TM N C1 C1 N O1 N C2 C2 N O2 GN D Z7
R
n
2 кОм
Commutation of the inductive load, electric lock for instance, causes high energy electric
impulse induced through relay contacts. To save contacts from damage, protect them with
diode, connected in reverse to current supply of the coil.
Note the fact, that some cheap electric door strikes are not intended for being energized
for prolonged time. Program relay time as short as possible to avoid door strike coil overheat-
ing.
Sirens, Bells and agents
Some sirens require polarity observing.
Electric bells are often the inductive load for
power supply. During bells connection mind the
warning about the inductive load above.
Transistor outputs
There are two additional programmable
transistor outputs for siren, bell or other agents' control.
Bell and SA outputs are rated at
500 mA @ 24V and sink to the
ground.
These outputs are electronically
protected against overload. In
case of overload the correspond-
ing event is generated.
Power supply wiring
It is recommended to use PSU 1,5
power supply with battery backup,
manufactured by ITV Ltd. This
power supply pr12V
power rated at 1,5 A. 4AH or 7AH
battery may be used in it. PSU 1,5
power supply has
outputs for
signaling of mains
power state and battery state. Wiring with mains power and
battery state by Z7 and Z8 terminals is shown on a picture.
RS-485 Interface
RS-485 Interface is used for networking of system components -
PC and panels. Length of RS-485 bus is up to 1200 meters.
Number of panels is up to 32.
RS-485 port is protected against over voltage (60V) and
cross polarity.
The unshielded four-wire cable may be used for RS-485 wiring.
For maximal 1200 meters distance please use 0.4 mm cross
section wire. 0.2 mm cross section wire will provide the
distance of 500 meters.
black
yellow
blue
red
A + B- GN D + EB Z
S3
S4
Wiring