Disabling The Twilight Sensor; Power And Control Cable; Cable Technical Specifications - Videotec GEKO IRH Manuel D'instructions

7.5 Disabling the twilight sensor

To disable the lamp's automatic switch-on set the
brightness to minimum (turn the potentiometer all
the way anticlockwise). With this setting the lamp can
only be switched on by closing the telemetry contact,
if the system is equipped with a central light sensitive
switch or a remote-controlled contact.

7.6 Power and control cable

The illuminator is supplied with a 2m (6.6ft) long
power and control cord.
Power supply cables (white, black): The illuminator
can be powered either by 24Vac/Vdc or 12Vdc.
Provide power to the black and white cable pair
(white, black, the polarity is irrelevant). For proper
operation please refer to the charts, taking into
account the power supply and the type of illuminator
installed (7.7 Cable technical specifications, page 8).
To avoid product malfunctions connect
2 illuminators maximum for each power
supply.
Remote control (telemetry) cables, green and
red colors: The control cable (telemetry) lets you
turn on the illuminator remotely by means of a dry
contact applied between the ends of the green and
red cables. For proper operation, make sure that
the photocell is disabled (7.5 Disabling the twilight
sensor, page 8). Close the contact to turn on the
illuminator. Open the contact to turn it off.
8

7.7 Cable technical specifications

Depending on the type of illuminator (Low or
High Power) and on the supply voltage, apply the
following maximum lengths for the power cables (to
be connected to the black and white wire pair).
CABLES SPECIFICATIONS (12VDC)
Cable section Maximum length
Low Power
illuminator
0.5mm² 10m (32.8ft)
(20AWG)
0.75mm² 16m (52ft)
(18AWG)
1mm² 22m (72.2ft)
(17AWG)
1.5mm² 32m (105ft)
(16AWG)
Tab. 1
CABLES SPECIFICATIONS (24VAC/VDC)
Cable section Maximum length
Low Power
illuminator
0.34mm² 25m (82ft)
(22AWG)
0.5mm² 40m (131ft)
(20AWG)
0.75mm² 60m (197ft)
(18AWG)
1.5mm² 120m (393ft)
(16AWG)
Tab. 2
For the telemetry cable (green and red colors), use a
conductor with a minimum cross-section of 0.34mm²
(22AWG) and a maximum length of 200m (656ft).
High Power illuminator
6m (19.7ft)
9m (29.5ft)
12m (39ft)
18m (59.1ft)
High Power illuminator
15m (49.2ft)
22m (72.2ft)
35m (114ft)
70m (229ft)
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