Chorus GW 10 756 User manual

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Easy movement detector with twilight sensor
GW 10 756
GW 12 756
GW 14 756
Technical Manual

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Summary
1Introduction................................................................................................................................................ 3
2Application ................................................................................................................................................. 4
2.1Limits to the associations................................................................................................................... 4
3“Settings” menu ......................................................................................................................................... 5
3.1Parameters ........................................................................................................................................ 5
3.2Communication objects ..................................................................................................................... 7

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1 Introduction
This manual describes the functions of the device named GW1x756 “Easy movement detector with
twilight sensor” and how to use the ETS configuration software to change the settings and configurations.

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2 Application
The Easy movement detector with twilight sensor allows you to send timed activation commands to
actuator devices using the KNX/EIB bus through which it connects to the Home Automation system,
according to the movements detected and the light in the environment where the device is installed,
measured by the two built-in sensors.
The IR movement detector function and the twilight sensor function work together and it is not possible to
separate them; however, if you turn the potentiometer for local regulation of brightness threshold on the front
of the device completely on the right, you can almost exclude the twilight sensor function (set the brightness
threshold to the maximum value, about 500 lux), letting the IR movement detector function ON.
It is also possible to enable/disable the function that sends commands following movement detection, trough
an apposite communication object.
The device is fitted with two trimmers, one to set the brightness threshold and the other to modify the cycle
time (that will be analysed in detail further on) and a pilot light backlit by a green led which indicates when a
start movement telegram is sent.
The device manages a safety intermission which excludes the IR sensor for 5 seconds when the
commanded actuator switches OFF (it requires the commanded actuator to send its status information). This
intends to prevent undesired activation, for instance caused by the switching off of an electrical load with
high heat emission.
It is possible to set the functions on the device so that they activate only movement detection when the
actuator to be commanded is ON (conditioned detection). This function mode allows you, for instance, to
switch on lights in the traditional manner (using a button or similar fitting) whilst guaranteeing the automatic
switch-off function once the area covered by the movement sensors is liberated.
This manual refers solely to the configuration using the ETS software. Please refer to the INSTALLATION
AND USER MANUAL supplied with the product for instructions on how to adjust and use the trimmers fitted
on the device.
2.1 Limits to the associations
Maximum number of group addresses: 40
Maximum number of logical associations: 40
This means that it could be possible to define maximum 40 group addresses and realize maximum 40
associations between group addresses and communication objects.

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3 “Settings” menu
Here it is possible to configure the programming mode between ETS mode (S-Mode) and Easy mode by the
Easy controller software (Kit GW90837, Kit GW90838, GW90840) and the other functional parameters (see
Diag 3.1).
Diag. 3.1
3.1 Parameters
¾3.1.1 Programming mode
This parameter determines the programming mode of the device:
•ETS mode
Select this value if you want to configure the device with ETS (S-Mode); all the configuration parameters
are now visible.
•Easy mode
Select this value if you want to configure the device with the Easy controller software.
Remember to download the application program with this value selected before using the device by the
Easy controller software if you have already used the device in an ETS project.

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¾3.1.2 Cycle time
When the device detects movement and after assessing the brightness level detected by the twilight
sensor, it sends a movement start telegram; from this moment in time, the value on the cycle time
counter decrease.
During the cycle time, any movement detected will not trigger the sending of a bus telegram as this
would create an overflow on the bus line, so the device repeat the start telegram at the end of each cycle
time; therefore, if the cycle time lapses and there is constant movement, the device will send another
start telegram (see Diag. 3.2).
Diag. 3.2
At this parameter, you can set the following values: 10s, 30s, 45s, 1min, 2min, 5min.
The cycle time period set through the ETS can be regulated manually by ± 50% rotating the right local
potentiometer on the detector. For instance, setting a time of 30 seconds on the Cycle time ETS
parameter, it will be possible to continuously regulate the transmission period from 15 to 45 seconds
(see INSTALLATION AND USER MANUAL).
¾3.1.3 Conditional detecting
Here it is possible to enable the conditional detecting movement, so the movement detection is active
only if the actuator to be commanded is ON. This function mode allows you, for instance, to switch on
lights in the traditional manner (using a button for example) whilst guaranteeing the automatic switch-off
function once the area covered by the movement sensors is liberated. The settings are:
•enabled
The conditional detecting movement is enabled, so the movement detection is active only if the actuator
to be commanded is ON.
•disabled
The conditional detecting movement is disabled, so the movement detection is always active.
Pay attention: the device sends only start timed activation commands so it is the controlled actuator that
automatically switched off when its time of activations elapsed; for this reason, it is most important to
configure the time of activation on the actuator greater than the cycle time set on the Easy movement
detector with twilight sensor.
Cycle time
Start telegram Start telegram

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3.2 Communication objects
The Settings menu makes the following communication object visible (See Diag. 3.3.):
Diag. 3.3
¾3.2.1 Timed switch
The device sends START temporization commands to the bus through this communication object
following a movement detection.
The enabled flags are C (communication), R (read by bus) and T (transmission).
The standard format of the object is 1.010 DPT_Start, the size of the object is 1 bit and the information it
contains is START temporization.
¾3.2.2 Status feedback
Through this communication object, the device receives status feedbacks for the devices it controls,
generally actuators, so that it is always updated about their status and therefore able to manage them
correctly. Please note that the use of this object is essential in order for the proper functioning of the
device.
The enabled flags are C (communication), W (written by bus).
The standard format of the object is 1.001 DPT_Switch, the size of the object is 1 bit and the information
it contains is ON/OFF status or more generally 1/0 status.
¾3.2.3 Sensor enabling
Through this communication object, the device receives enable/disable movement detection function
commands by other KNX/EIB devices.
The enabled flags are C (communication), W (written by bus).
The standard format of the object is 1.003 DPT_Enable, the size of the object is 1 bit and the information
it receives is enable/disable movement detection function.

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