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SRM Sequencing Relay Module
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InstaLink® SRM Sequencing Relay Module Cat. #: 330007

In the case of DC power supplies, some loads may actually switch on and draw current when the power supply voltage is at a fraction of the normal output. For example, when a power supply is switched on the voltage ramps up to 24Vdc but an analog signal conditioner may start drawing current when the voltage is 10Vdc or less. If the signal conditioner has an internal DC/DC converter (many do) the current draw at 10Vdc is substantially higher than at 24Vdc. If there are too many loads like this it can cause the power supply to go into an over-current condition and shut off or the voltage will never increase to 24Vdc. The InstaLink®-SRM has a 0.5 sec. delay after the input is energized before the relay coil is energized and an output signal to energize the next relay is activated.

The next relay adds another 0.5 sec. delay and so on. As many relays as necessary can be linked together. The first InstaLink®-SRM is configured via a jumper as the master and all others are configured as slaves. Interconnection of multiple modules is accomplished by connecting the "OUT" terminal of one module to the "SIG" of the next. The contact is fused and rated for 24Vdc @ 5A max. An LED indicates the fuse status (green;on=fuse healthy). Provision has been made for cross connecting the 24Vdc and 0V used to power the contacts. Jumpers are provided with each module. A second LED indicates the status of the relay (green;on=energized).

To order this product, call 905-475-0220 or email

Contact Us

Emphatec Inc
115 Anderson Avenue, Markham, ON L6E 1A4
Tel: 905.475.0220
Fax (for Engineering): 905.475.8796
Fax: (for Orders): 905.475.8117

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