![]() Select the voltage of the relay's attraction coil including 12VDC / 24VDC / 110VAC / 220VAC, etc., according to the voltage of the control circuit.Īir damping or electric time relays are better than transistors for occasions with large power supply voltage fluctuations, and electric time relays are not suitable for occasions with large power frequency fluctuations, and air damping timer relay is not suitable for large temperature changes. The reset time after the action should be longer than the inherent action time, so as to avoid misoperation or even no delay, which is especially important in the case of repeated delay circuits and frequent operations.įor occasions with low requirements for delay time accuracy, generally use electromagnetic or air damping time delay relays with lower prices otherwise, for high requirements on time delay accuracy, electronic time relays can be used. There are two types of timer relays, power-on delay or power-off delay, which should be selected according to the requirements of the control circuit. Since the timer relay wont pull a lot of current, Id probably use it to. The airflow switch should be closed, but the heater relay should remain. Once the motor gets below say 160, it will start, purge for about 15 seconds. The following aspects should be considered when selecting a time delay relay. Despatch LAC Series Manual Online: Test Airflow Switch And Purge Timer (Lfc Only. Cat, Voltage, Alarm Relay Switching, Purging Time, Safety Switch Timing, Descriptions, Includes. The selection of timer relay mainly focuses on delay mode and parameter. Select a link under the item tab below to order. Mode 4: Two group sync time delay output.Mode 3: One group suspension delay output.Mode 2: One group instantaneous and one group time delay output Provides the prepurge timing for select 7800 SERIES relay modules.A) Disconnect 120 VAC Power to the Power Venter/Draft Inducer and any. Mode 1: External connecting reset, one group pause delay output The Timer/Relay has an adjustable post-purge period of (10 seconds to 10 minutes).Mode 3: One group suspension delay outputĬonnection Diagram & Output Operation Mode Mode 2: One group instantaneous and one group delay output ![]() Usage: To enable autopurge type: &set time as number s/m/h/d Example usage: &set 2 h. Mode 1: External connecting reset, one group pause delay output To change settings of a channel type as follows in it. High quality and accuracy digital timer relay / countdown timer is widely applied in the industrial automation field with power supply 24V DC or 85-265V AC. ![]() Digital timer relay or time delay relay, on-delay timer relay, has timing setting range of 0.01~9999 sec / 0.01~9999 min / 0.01~9999 hrs, easy to read with 4-digit dual time display. ![]()
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