Eaton IQ 250 User & Installation Manual

Also see for IQ 250: User & installation manual Quick start guide

Contents

Chapter 8:IQ 250/260 Meter Programming the IQ 250/260www.eaton.com IB02601006E 8-15Configuring a Relay Output/Digital Input Card (IQ250/260-IO1):The Relay Output/Digital Input Option Card has:· Two relay contact outputs for load switching· Two wet/dry contact sensing digital inputs.Accumulators in the software count the transitions of the Inputs and Outputs.For technical specifications and hardware installation, refer to Chapter 7 of this manual.NOTE: When installing a Relay Output/Digital Input card, we recommend you reset the accumulators for the card,in order to prevent erroneous counts. See instructions on using the Reset Device Information screen to reset cardaccumulators, later in this chapter.An example use of the optional Relay Card is in monitoring the status of circuit breakers or relays in your electricalsystem. The two status inputs could be used to monitor two circuit breakers, and the two relay outputs could be usedto sound an alarm upon the occurrence of a programmed out of limit condition (IQ 260, only). Relay outputs on IQ250/260 can be manually triggered: see the “Performing Manual Relay Control” section, later in this chapter.Click Relay Assignments to set the limits/alarm conditions (IQ 260, only) and labeling and compression op-tions for the card’s Relay Outputs. From the Relay Assignments screen, you can:• Configure up to 8 limits for each of the two RelayOutputs (IQ 260)• Set a Delay and Reset Delay for the Outputs (IQ 260)• Assign each Output an Output Label, Open Label,and Closed Label• Assign an Accumulation Compression Factor foreach outputIMPORTANT! First use the Limits screen to set up thelimits you want to assign to an Output. Seeinstructions earlier in this chapter.NOTE: The Limits functionality is only available forthe IQ 260. If you are connected to an IQ 250, youwill only see the Label and AccumulationCompression Factor fields in this screen.1. The available Limits appear in the Limit ID column.To assign a Limit to an Output Relay:Select the Alarm trigger from the pull-down menu next to the Limit ID. The options are:• Above Limit (the Output is triggered when the Above Limit condition occurs)• Below Limit (the Output is triggered when the Below Limit condition occurs).You can assign the limit to one or both (or neither) of the Relay Outputs.NOTE: A Relay operates when any one assigned Limit is tripped, and stays in the Set condition as long as oneLimit is in the Alarm state.2. You can enter Set Delay and/or Reset Delay. These values are the delay before the Output is changed: Set iswhen the common is shorted to Normal Open (this is the Set Condition).3. The current Output Labels are displayed in the screen. These labels are used for Logging. To change theOutput labels, click in the Labels field you want to change, and enter a new label. The fields that can be changedare:• Output Label – Label ID• Open Label – Open state ID• Closed Label – Closed state ID