H3M-DC24-D

Series:	H3M
Part Status:	Obsolete
Mounting Type:	Socketable
Relay Type:	Mechanical Relay
Function:	On-Delay
Circuit:	DPDT (2 Form C)
Delay Time:	0.1 Min ~ 10 Hrs
Contact Rating @ Voltage:	5A @ 250VAC
Voltage - Supply:	24VDC
Termination Style:	Plug In, 8 Pin (Octal)
Timing Adjustment Method:	Hand Dial
Timing Initiate Method:	Input Voltage

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Time Delay Relays

Time delay relays are a type of uniform or non-uniform delay relays with time-delayed outputs for use in industrial control, program logic and other applications which require a component to temporarily interrupt power cycles or enable remote activations. They also play an important role in safety control and related applications. Time delay relays offer the user the capability of controlling when a cycle ends and starts, when a process or device should be turned on or off, and when a process should repeat itself. The working principle of time delay relays relies on pulses, set times, total time fields and other factors. The time delay relays may be categorized as single-shot relays and repeat timing relays. The single shot relays feature time-delayed outputs for a short, uniform time setting. The repeat timing relays produce an output at regular intervals until power is removed or a reset signal is given.One of the most common time delay relays is the H3M-DC24-D. This particular model is often used for logic control systems and it utilizes a built-in time setting knob for easy configuration. It requires 24VDC coil voltage for full operation and it offers a generous 3A rating for output load current. The range of time delays it offers is adjustable from 0.1 seconds to 10 minutes.The working principle of the H3M-DC24-D time delay relay revolves around the preset time. The preset time defines the amount of time the relay will hold the output for before it will turn off. In a typical configuration, when AC or DC power is applied to the coil, the time delayed output will turn on and remain on until the preset time has elapsed, after which it will turn off. Aside from the time settings, this relay can also adopt either monostable or bistable modes for output timing control.Monostable timing mode allows for the unit to be triggered and reset with a single signal pulse. When the coil is initially energized, the output will be triggered. When the output times out, a reset signal is sent to the coil. Bistable timing mode requires two separate signals to both trigger and reset the unit.Another useful feature of the H3M-DC24-D is the timing memory function. This ensures that in the case of a power failure, the preset time delay remains in effect after the power is restored. This allows the relay to remain in its current state until it is reset manually or a new signal is provided.In order for the H3M-DC24-D to operate properly, it should only utilize 24V DC power and remain dry at all times. Do not apply AC or any other voltage other than indicated, as this might cause irreversible damage to the relay. Also, the relay should never be powered directly by a battery or another power source other than those specified.Overall, the H3M-DC24-D time delay relay is an effective and reliable component that allows users to program their cycles and to control their events. It is great for applications that require timed power turning on and off, as well as for logic control and safety systems. The preset time function can be set to any adjustable value between 0.1 to 10 minutes and the relay can be used in monostable or bistable modes. Additionally, the time delay relay boasts a timing memory feature which can be quite useful in situations when the power is lost and restored.

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