66250862-EN - V4.0 - 15/03/19
- 8 -
VK8K/6758 Series “6 wire Bus” videokit
VK8K/6758 Series - Installation handbook
Art. 8833
Speaker unit
HOW TO CONNECT ELECTRIC LOCK
The “door-open” relay can operate either as “dry contact” or “capacitive discharge” mode.
•
In “dry contact” operation mode the relay works in a traditional way, a power supply or a power source is needed to operate the
lock (12-24Vac/dc 2A max), and activation lasts according to the door opening time programmed.
• In “capacitive discharge” operation mode the relay’s contacts, when active, supply directly the lock (12Vac/dc 1A max) for a
moment. You don’t need a power supply for the lock and the door opening time programmed do not affect the activation time.
A possibile deterioration of the mechanical performance of the electric lock, might cause the “capacitive discharge” malfunctioning
in time. In case the electric lock is used in very dusty environments or in peculiar climate conditions, we suggest to use the “open
door” relay in “dry contacts” mode.
12Vac/dc
1A Max
Fig. 5
Using capacitive discharge
12Vac 1.6A Max
using Art. 321
24Vac/dc 2A Max
using other power
supplies
Fig. 6
Using separate P.S.U.
SIGNALS (TERMINALS)
NO
Door open relay normally open contact
Max 24Vdc,
3mA when
used as dry
contacts
relay
NC
Door open relay normally closed contact
C
Door open relay common contact
PTE
Active low input to control directly the door open relay
SL
Active low output to enable the enslavement relay for
video signal exchange (active with a call in progress)
BS
Input/Output busy signal (about 12V in stand-by,
about 0V with a call in progress)
V2
Balanced video signal sync.+
V1
Balanced video signal sync.–
2
Speech line output from the microphone (about 12V
in stand-by, about 3V with a conversation in progress)
1
Speech line input toward the loudspeaker and data
signal (about 12V in stand-by, about 5V with a con-
versation in progress)
12Vout
12Vdc. 0,3A max. output to supply accessiories
–
Power input ground
+V
Power input 16÷20Vdc
MAXIMUM ILLUMINATION DISTANCE FROM CAMERA AT NIGHT
The illumination LED’s within the camera will
illuminate the visitor when they are within
50 cm of the camera.
MAX 50 cm
CLEANING OF THE PLATE
Use a clean and soft cloth. Use moderate warm water or non-ag-
gressive cleansers.
Do not use:
• abrasive
liquids;
• chlorine-based
liquids;
•
metal cleaning products.
TECHNICAL SPECIFICATION
Power Supply:
20Vdc
Power consumption:
Stand-by: 70mA
Operating:
250mA
Working Temperature:
-10 +50 °C
Summary of Contents for 6758
Page 28: ...66250862 EN V4 0 15 03 19 28...
Page 29: ...66250862 EN V4 0 15 03 19 29...
Page 30: ...66250862 EN V4 0 15 03 19 30...
