37
Version 1 – GBR(23/06/2021)
502-0152
o
Using a remote switch. In the facility, the electrical appliances are switched off by one button
(the total stop system). The unit may be included in this system via this contact.
o
Using a time relay. The unit may be switched on/off by a time relay located in the switchboard.
1.
Technical Parameters of External Contact
o
Switching voltage 24 VDC / 5 mA.
o
The contact may change the switching logic by connecting
the jumper to the NC or NO switching logic (factory settings).
Fig. 31
4.2.3.2.
Functionality of the Unit when Controlled by External Contact EXT1
-
External contact switches the unit on and off (the same functionality as on the ON/OFF button
controller) with logical termination or activation of all running processes at the time of switching off,
on.
-
If the unit is switched on/off by an external contact, it can be switched off/on by the controller on the
unit.
-
An example of the external contact functioning – a timer is used as an external contact:
o
EXT1 activates the unit at the given time (in the morning) – the unit operates according to the
user settings,
o
during operation, the unit is switched off by the controller on the unit – the unit switches off,
o
EXT1 switches the unit off at a given time (in the evening) – the unit remains switched off,
o
EXT1 activates the unit at the given time (the following morning) – the unit works according to
the user settings.
-
If you want to prevent control of the unit by unauthorised persons and you want to control the unit
by external contact, we recommend that after setting the unit parameters, you activate a child lock,
which prevents access to unauthorised persons (the unit cannot be switched off on the unit
controller). his ensures that the unit is switched on/off only via an external switch.
4.3. Wiring Block Diagram
D- Fig.32
