GE Multilin UR-4LH Digital I/O ModuleUniversal, communicate with other equipment within the power

An option for the Universal Relay series, General Electric Multilin’s UR-4LH is a Digital I/O module. Digital I/O modules allow the relay to output and input digital signals, communicating with other equipment in the power system. This version of the module offers 14 Form-A latchable outputs without monitoring capabilities. It is also a high power unit.

Installation of modules is fairly straightforward, with the enhanced relay having a hinged front for the efficient replacement, installment, or upgrading of current modules. To install a module, users should take the following steps:

• Remove the thumb screw and completely open the front panel to view all of the currently installed modules and open slots.
• Eliminate the flow of power to the unit and disconnect module connections.
• Pull the inserter clips located at the two vertical ends of the module and record the original position of the module. Users should record the position because modules can only be replaced by modules of the same sort; noting the position guarantees users do not forget the correct installation location. After doing so, users can then slide the module out of the chassis.
• Position the inserter clips properly and make a smooth motion to slide the module into the module bay. Engage clips simultaneously, and the module is properly installed after the clips successfully lock into place.

Users can reference images located in any of the Universal Relays manual can provide a visual reference for users concerned about proper module installation.

Frequently Asked Questions about UR-4LH

What type of digital I/O card does the UR-4LH have with use in providing contact inputs and outputs to universal relays of the Multilin UR series?

The GE Multilin UR-4LH module is a digital I/O module contained within various universal relays. The various types of I/O cards are Form C, Form A, Fast Form C, latching, and Solid State Relay options (SSR). These digital I/O cards can come with or without DC voltage, with or without current monitoring ability, and with or without isolated inputs that have an auto burnish characteristic. The Multilin UR-4LH is of the 4L order specification of digital I/O modules used for the UR series of universal relays. This order code specifies digital I/O cards that are Form A. The 4L I/O card has 14 outputs that are latchable. The 4L digital I/O specification for the I/O module UR-4LH does not come with additional monitoring capabilities such as current or voltage. The latchable feature is useful to replace the need for lockout relays or mechanical switches with the formation of a secure interlocking application. Form-A I/O digital modules are also beneficial because they provide the universal relay with activation speed generation of 4ms or less under wet or dry contact conditions.

 

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