Use Of The Digital Input; Setting The Digital Input, Incl. Values X And Y; Examples Of Using The Digital Input; Motion Detector - REMEHA Celcia 20 Notice Technique

7

USE OF THE DIGITAL INPUT

The controller is equipped with a digital input. Use
terminals X and Y for this. With this input you set the
controller in forced ECO-TEMP or TEMP-5 temperature
mode or a text appears on the display. Examples of use
Mode Input
0. Input not in use
X minutes closed
1.
Y minutes open
Y minutes open
2.
X minutes closed
X minutes closed
3.
Y minutes open
Y minutes open
4.
X minutes closed
X minutes closed
5.
Y minutes open
Y minutes open
6.
X minutes closed
X minutes closed
7.
Y minutes open
Y minutes open
8.
X minutes closed

7.1 Setting the digital input, incl. values X and Y

Set the rotary knob on MENU
Go to the SETTINGS option and press OK
Go to the DIGITAL INPUT option and press OK
Select the required response mode (see table).
Confirm your choice with OK.
Go to the next menu item, TIME DIGI 0-1 (this is the
value X) or TIME DIGI 1-0 (this is the value Y), and
select a value.
Return the rotary knob to the desired programme
and close the lid.

7.2 4 examples of using the digital input

7.2.1 Motion detector 1

function: if, for instance, a motion detector detects
no motion for 30 minutes, the temperature
has to go to ECO-TEMP, in case of motion
the controller goes to the normal operating
situation.
Setting: if the motion detector shuts a relay when
there is motion, set the controller as follows:
select method 4 and set value X at 0
minutes and value Y at 30 minutes.
Consequence
-
Control to TEMP-5. Dependent of the display-
setting, the text DIGI TEMP-5 is showed.
Normal situation
Control to TEMP-5. Dependent of the display-
setting, the text DIGI TEMP-5 is showed.
Normal situation
Control to ECO-TEMP. Dependent of the display-
setting, the text ECO-TEMP is showed.
Normal situation
Control to ECO-TEMP. Dependent of the display-
setting, the text ECO-TEMP is showed.
Normal situation
Text "DIGI CLOSED". Control continues as usual General
Normal situation
Text "DIGI CLOSED". Control continues as usual General
Normal situation
Text "WATERPRESSURE". Control continues as
usual
Normal situation
Text "WATERPRESSURE". Control continues as
usual
Normal situation
11
are: external overtime timer, motion detector, door contact
and water-pressure switch. Only use volt-free contacts.
The input can be used in 7 possible modes, see table
below:
7.2.2 Motion detector 2
function: if a motion detector detects motion, the
temperature has to go to TEMP-5, otherwise
to the normal operating situation.
Setting: if the motion detector shuts a relay when
there is motion, set the controller as follows:
select method 1 and set value X at 0
minutes and value Y at 30 minutes.

7.2.3 Water-pressure switch

function: if the pressure in the CH-system is too low,
a message follows on the display.
Setting: Connect a water-pressure switch to the
digital input and set the controller as follows:
Select method 6 and set values X and Y on
1 minute to prevent nervous behaviour. If
the water-pressure switch activates, the text
"digital in open" appears on the display.
7.2.4 Door contact
function: If the door opens, the temperature goes
to ECO-TEMP after 3 minutes. When one
closes the door, the controller returns to the
normal operating situation.
Setting: Connect a door contact to the digital input
and set the controller as follows: select
method 3 and set value X at 3 minutes and
value Y at 0 minutes.
Application
-
External overtime timer
Motion detector
Motion detector
Door contact
Water-pressure switch
Water-pressure switch