Zelio Timer Relays Page 17 Functions

17 Functions (continued) Zelio Timer Relays Functions (continued) Function Qg: Star-delta timing (2 C/O output with same common) 2 outputs On energization of power supply, the output R1 closes such that it energizes Star contactor + Main contactor and the timing T starts (Star connection time duration starts). At the end of the timing period T, the output R1 reverts to its initial state such that de-energizes Star contactor and causes t transition time starts. At the end of the transition time, the output R2 closes such that energizes Delta contactor. Function Qt: Star-delta timing (2 C/O output with split common) 2 outputs On energization of power supply, the output R1 and R2 initializes at its initial state such that it energizes Star contactor + Main contactor and the timing T starts (Star connection time duration starts). At the end of the timing period T, the output R1 closes such that it de-energizes Star contactor and causes t transition time to start. At the end of the transition time, the output R2 closes such that energizes Delta contactor. Function Qgt : Star-delta relay (2 C/O with same common) with pause/summation control 2 outputs Insert new function here Heading: Function Qgt : Star-Delta Relay (2 C/O with same common) with pause/ summation control On energization of power supply, the output R1 closes such that it energizes Star contactor + Main contactor and the timing T starts (Star connection time duration starts). During Star connection time, the timing can be interrupted/paused each time X1 energizes. When the cumulative total of time periods elapsed reaches the pre-set value T, R1 reverts to its initial state such that it de-energizes Star contactor and causes t transition time to start. At the end of the transition time, the output R2 closes such that it energizes Delta contactor. Function Qtt : Star-delta relay (2 C/O output with split common) with pause/summation control 2 outputs On energization of power supply, the output R1 and R2 initializes at its initial state such that it energizes Star contactor + Main contactor and the timing T starts (Star connection time duration starts). During Star connection time, the timing can be interrupted/paused each time X1 energizes. When the cumulative total of time period elapsed reaches the pre-set value T, the output R1 closes such that it de-energizes Star contactor and causes t transition time to start. At the end of the transition time, the output R2 closes such that it energizes Delta contactor. Function Tl: Bistable relay with control signal on 1 output 2 outputs After energization of power supply and Y1, the output(s) R close(s). The subsequent energization of Y1 cause the output(s) R revert(s) to its/their initial state. This cycle is repeated indefinitely until power supply is removed. The second output (R2) can be either timed (when set to TIMED) or instantaneous (when set to INST). U R1 R2 T t R1 U X1 R2 t2 t1 t R1 U X1 R2 t2 t1 t T = t1 + t2 + T = t1 + t2 + R1 Y1 U R2 R2 inst. ` `` U Y1 R1 ` `` R1 U R2 T t

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