DRA1-CMXE60D5

Series:	DRA
Packaging:	Bulk
Part Status:	Active
Mounting Type:	DIN Rail
Circuit:	SPST-NO (1 Form A)
Output Type:	DC
Voltage - Input:	20 ~ 28VDC
Voltage - Load:	1V ~ 60V
Load Current:	5A
On-State Resistance (Max):	100 mOhms
Termination Style:	Screw Terminal
Package / Case:	Module
Supplier Device Package:	--

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Introduction

Solid State Relays (SSRs) are electrical switches that are used to control electrical circuits with varying levels of power. They have been used in industrial, commercial, and consumer applications for over 40 years and have emerged into the forefront of technology due to their ability to switch larger current and voltage levels, greater reliability, and reduced overall costs. A type of SSR which is gaining traction in today’s market is the DRA1-CMXE60D5. In this report, the application field and working principle of this device will be explored in detail.

Application Field

The DRA1-CMXE60D5 is generally used in systems which require precise control of power delivery with high efficiency and reliability. It is particularly well-suited for controlling high power industrial processes, or for providing on-off switching of very large current loads, such as in AC motors for electric vehicles, heavy machinery, and factory automation. Additionally, due to its simplicity, it is also frequently used for lights, fans, pumps, and other devices which require power control.

Working Principle

The DRA1-CMXE60D5 utilizes a bi-stable, or latching, SSR technology to perform on-off switching. Within the device, a control circuit comprises two pairs of silicon controlled rectifiers (SCRs) contained in a solid-state package. Each of the four SCRs is controlled by an independent signal, and when the correct combination of signals is applied, the electrical contact between the input and output terminals is formed. Thus, the DRA1-CMXE60D5 functions as an electrical switch, performing on-off duties, just like a mechanical switch or Contactor.The signal that triggers the SSR is normally an analog or digital control signal, and it provides the control input to the gate of the respective SCR. Gate current passes through the gate, which triggers the SCR. The SCR then allows current to flow through the device, thus allowing the output circuit to be energized or de-energized depending on the polarity of the control signal. The circuit acts as an on-off switch until the control signal changes polarity, at which time the SCRs de-energize and the current flow stops. This process can be repeated as often as required for the application.

Conclusion

The DRA1-CMXE60D5 is an advanced SSR which is used to precisely control power delivery in a variety of applications. The device utilizes a bi-stable configuration of two pairs of silicon controlled rectifiers connected in parallel, allowing it to be triggered by an analog or digital control signal, thus providing reliable, on-off switching of high power loads. This device is particularly well-suited for industrial applications which need precise control of power delivery without having to switch large current or voltage levels.

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