Remote
control switching is used in centralized remote operation. See figure below (A).
The control circuit combination of electric switch and a remote control relay
(RCR). It can control building and street lights by manually pressing the
electronic switches PBS. Each switch has an indication of ON and OFF with light
emitting diode gives an information whether the equipment being controlled is
at energized or de-energize condition.
Control Operation
Figure
below (A) illustrate the schematic diagram of a remote control switching
system. The electronic push button switch PB and the relay RCR are supplied by
a 24 volts AC source. Momentarily pressing the electronic push button switch PB
will send an impulse current to the relay RCR. By electronic means, the RCR
contact (C-D) will close to energized the contactor C. with contactor C
energized, contacts C (1-2,3-4,5-6) will close to energize (turn-On) the street
lights.
Momentarily
pressing again the push button PB will send another impulse current to the RCR.
This time the RCR contact (C-D) will closed to de-energize the contactor C.
With the contactor C de-energize contacts C (1-2,3-4,5-6) will open to
de-energize (turn OFF) the streets lights.A maximum of 4 electronic push button
switches PB can be connected in the parallel to control a single RCR.
NOTE: that
in figure above (A), three push buttons (PB2,PB3,PB4)may be added.
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