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System Control Solutions Ltd
7 Barley Way South Lowestoft Industrial Estate Lowestoft, Suffolk. NR33 7NH
Electronic Timers RTW Series Timers Main Features 5 functions, low cost 6 timing ranges, from 0.3sec. to 30min Electronic circuit with high precision and immunity to noise Compact, 22.5mm width, mounted on a DIN rail 35 mm or with screws Illuminated indication (LED) Description RTW timing Relays have digital electronics that provide high precision, accuracy and immunity to noise. Design according to international standards, RTW timers provide a compact solution, in 22.5mm width frame for mounting on DIN Rails 35mm, in configurations with 1 or 2 NO/NC outputs and 110-130V 50/60Hz, 220-240V 50/60Hz or 24Vdc supply. Timing ranges, the RTW can be set from 0.3 seconds to 30 minutes with reliability and accuracy. Timing Operations RTW RE � The time (T) counting, set at the dial, begins after the energizing of the relay. After this period, output contacts changing will occur, which remains on this condition in this state until the supply is interrupted. RTW PE � After relay energizing, the output contacts are instantly changed and remain active during the (T) period set in the dial. RTW RD � After the energizing of the relay and of the control terminal, the output contacts change instantaneously. Upon removal of the control, the output contacts return to the original condition after a (T) period set in the dial. Note.: After relay energizing, even if the control terminal is not energized, the output of the contacts change. RTW CI (Cyclic) � After relay energizing, the output contacts are ON and OFF cyclically. The upper dial determines the time (TON) in which the contacts remain ON, while the lower dial determines the time (TOFF) in which the contacts remain OFF. RTW ET (Star-Delta) � After relay energizing, the Star output contacts change instantaneously, remaining ON during the (T) period set in the dial. After the (TM) time of 100ms, the Delta terminals are then started and remain on this condition until the supply is interrupted. Where: T, TON, TOFF: Set Time -- TM: Dead Time.
Electronic Timers
Where: T, TON, TOFF: Set Time -- TM: Dead Time.
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