Ext Input: Applications; Ext Input: Technical Information - Theben SELEKTA top2 Series Manual

11.2.4. EXT INPUT: Applications


Remote switching application:
o
Control the external input via modem.

Semi-automatic OVERRIDE application:
o
The semi-automatic function offers various implementation options in the residential
and commercial property fields for switching on the lights in corridors, hallways and
staircases, switching on the lights in offices for cleaners for a short period, etc.
o
Switch on light manually (EXT input button = manual override), but switch off again in
a time-controlled manner (only OFF switching times are programmed).
o
The semi-automatic function therefore prevents undesired lighting during the whole
night.
o
Switch on light automatically using an ON time in the time switch, but switch off again
by hand using the EXT input button = manual override. As a precaution, a very late
OFF switching operation can also be programmed via the time program.
o
The manual switch-off prevents unnecessarily long ON switching operations and, in
the case of short ON switching operations, an unwelcome "getting caught in the dark".

TIMER application:
o
The TIMER offers a wide variety of implementation options in the residential and
commercial property fields, e.g. switching off of lights in utility and cellar rooms
(automatic switch-off).
o
The light is switched on manually (EXT input button = TIMER ON with specific switch-
on time) and switched off after the timer time has elapsed.
o
Pump controls example: by using the time program on the time switch, a time-
controlled pump switch-ON/OFF takes place and by using the EXT input button = ON
timer 10 minutes, the pump is switched on additionally for 10 minutes if required.

11.2.5. EXT INPUT: Technical information


230 V input, i.e. simply connect phase L1 via a switch or button to the EXT input.

In the time switch there is a resistor of 220 kOhm between Ext input and N. This ensures that
a current of approx. 1 mA flows. Therefore, use NYM cable (not bell wire).

Button with glow lamp path cannot be used.

The line length is limited to maximum 100 m since, when using cables with several wires with
L1, L2, L3 and N in a cable, capacitive pick-ups (overvoltages) can occur (in an extreme case
up to 3 mA of current can flow). In the case of a longer line, there is therefore the danger that
the control signal on the EXT input cannot be correctly detected.
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