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Data is subject to errors and technical modifications.
Modular Devices
& Enclosures
Light Sensitive Switches
Technical Data
Light Sensitive Switches
Using light sensitive switches can prevent the unnecessary use of lighting
circuits where sufficient daylight exists. The benefit of modular devices is the
facility to set the ambient lighting level at which the device will operate, and as
the device is fitted at the distribution point prevent unauthorised tampering.
The remote photocell unit can be mounted up to a distance of 50 metres from
the device. Two devices are available the standard
EEN100
light sensitive
switch and an enhanced programmable version the
EE171
that also allows
time clock control.
Principle of Operation
Both devices control lighting systems according to natural illumination;
- The user sets the working level:
- The photo cell measures the external light level
The output of the
EEN100
is:
- ON, when the measured level is lower than the pre-set light level
- OFF, when the measured level is higher than the pre-set light level
The output of the
EE171
during the programmed ON time period is:
- ON, when the measured level is lower than the pre-set light level
- OFF, when the measured level is higher than the pre-set light level
The output of the
EE171
during the programmed off time period is:
- OFF, regardless of the lighting level
The light sensitive switches include a built in time delay which avoids
unnecessary switching due to temporary factors such as car headlight beams
etc...
Description
The programmable light sensitive switch
EE171
has two main
functions:
Light sensitive switch comprising
1. Override selector switch to allow permanent ON or OFF, auto or
test mode
2. Lighting range selector
3. Potentiometer to set light level
4. Indicator to show output switching status
A programmer to establish the automatic operating cycle
The programmer comprises 4 keys:
5.
ON / OFF
to choose whether the circuit is on or off.
6.
Prog
to set the program and scroll program steps
7.
Reset
8.
+
and
-
to change settings
Lux
T
6:00 8:00
17:00
23:00
ON
ON
OFF
OFF
OFF
11
10
12
auto
1
test
2
test
1
auto
2
N
5
1
2
L
6
6E0585a
230V 50Hz
m16A 250V
10
11
12
AC1
test
auto
2000
50
Lux
100
5
12
7 8 9 10 11
6
1 2 3 4 5
on/off Prog
+
3
4
2
1
6
5
7
8
L
N
10 11 12
5 6
1 2