2901486 Industrial Controls

Series:	ETD-BL-1T
Part Status:	Active
Lead Free Status / RoHS Status:	--
Relay Type:	Mechanical Relay
Function:	Off-Delay
Circuit:	SPDT (1 Form C)
Delay Time:	3 Sec ~ 300 Sec
Contact Rating @ Voltage:	6A @ 250VAC
Voltage - Supply:	24VDC
Mounting Type:	DIN Rail
Termination Style:	Spring Terminal
Timing Adjustment Method:	Screwdriver Slot
Timing Initiate Method:	Input Voltage

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Introduction to Time Delay Relays

Time delay relays (TDRs) are an important tool in troubleshooting, controlling and scheduling various operations in industrial production. They provide a cost-effective solution for selecting the correct time of operation and protecting against abrupt surges and dangerous over-voltage and over-current conditions. TDRs are typically manufactured as a component of a larger system and feature an adjustable time delay for accepting or rejecting predetermined signals.

Types of Time Delay Relays

Depending on the type of application, TDRs are available in different configurations, such as those with or without a trigger input, those with analog or digital inputs, those with single or multiple contacts, and those with On-Delay operation or Off-Delay operation. On-delay relays actuate a user-defined period of time after a trigger signal is received. Off-delay relays actuate after a user-defined period of time after the imput signal is removed.

The 2901486 Application Field and Working Principle

The 2901486 TDR is primarily used in industrial automation processes to control when an action or operation starts or stops. It features an adjustable On-Delay timer with over-voltage and over-current protection. The On-Delay timer is adjustable over a wide range of 0.1 to 24 hours.When an input signal is applied, the timer begins counting down from the preset delay time (t). After the delay time has elapsed, the output signal is activated and the timer stops counting. The timer is reset when the input signal is removed. The time delay can be adjusted by the user via the external adjustment knobs.This TDR includes over-voltage and over-current protection which is provided by two external fuses. The over-voltage and over-current protection feature protects the timer from over-voltage or over-current damage.

Conclusion

TDRs are a cost-effective solution for selecting the correct time of operation and protecting against over-voltage and over-current conditions. The 2901486 TDR is primarily used in industrial automation processes to control when an action or operation starts or stops. It features an adjustable On-Delay timer with over-voltage and over-current protection which can be adjusted via external knobs. By considering the environment where it will be used and the signal delay needed, TDRs can effectively perform time-controlled operations and protect from over-voltage and over-current conditions.

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