18
Integrated Technical Vision Ltd
http://www.itvsystems.com.ua
Power supply wiring
It is recommended to use PSU
1,5 power supply with battery
backup, manufactured by ITV
Ltd. This power supply
provides 12V power rated at
1,5A. 4AH or 7AH battery may
be used as well. PSU1,5
power supply has outputs for
signalling of mains power
state and battery state. Wiring
with mains power and battery
state supervising with Z7 and
Z8 terminals is shown on the
picture.
Locking devices
DLK642 has two relay outputs with C form
contacts. Operation time of this outputs may be
programmed from 1 to 255 sec. That allows to
control practically any type of locking device.
Wiring of locking devices is shown on wiring
diagram.
Relay contact rating is 5 Amp @ 24 Volts.
Commutation of 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 overheating.
Sirens, Bells and agents
There are two additional programmable
transistor outputs for siren, bell or other
agents control.
Bell output is rated at 300 mA @ 12V and
sinks to the ground.
SA is rated at 300 A @ 12V and sinks to the
ground.
This outputs are electronically protected
against overload. In case of overload
corresponding event is generated.
Some sirens require polarity observing.
Electric bells are often the inductive load for power supply. While connecting bells mind
the warning about the inductive load above.
~220 V power normal
Battery normal
~ AC ~
+1
2
V
GND
PWG
ACG
GND
+12 V
DLK642
Power
unit
R
n
2 kOm
Z8
-PW R+
TM
N C1 C1 N O1 N C2 C2 N O2
GN D
Z7
R
n
2 kOm
Bell
+12 V up to 500
мА
PW R+
TM
N C1 C1 N O1 N C2 C2 N O2 SA BEL
X1
Wiring
Lock of
access
point A
Lock of
access
point B
-PWR+ TM NC1 C1 NO1 NC2 C2 NO2 SA BEL
X1
