CHAPTER 5: SETTINGS PRODUCT SETUPL60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL 5-10555.3.10.4 Calculation method 3: Rolling demandThis method calculates a linear average of the quantity (RMS current, real power, reactive power, or apparent power) overthe programmed demand time interval, in the same way as Block Interval. The value is updated every minute andindicates the demand over the time interval just preceding the time of update.5.3.11 User-programmable LEDs5.3.11.1 MenuSETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDSThe 48 amber LEDs on relay panels 2 and 3 can be customized to illuminate when a selected FlexLogic operand is in thelogic 1 state. The trip and alarm LEDs on panel 1 can also be customized in a similar manner. To ensure correctfunctionality of all LEDs, an LED test feature is also provided.5.3.11.2 LED testSETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDS LED TESTWhen enabled, the LED test can be initiated from any digital input or user-programmable condition, such as a user-programmable pushbutton. The control operand is configured under the LED TEST CONTROL setting. The test covers allLEDs, including the LEDs of the optional user-programmable pushbuttons.The test consists of the following three stages:1. All 62 LEDs on the relay are illuminated. This is a quick test to verify if any of the LEDs is “burned.” This stage lasts aslong as the control input is on, up to a maximum of 1 minute. After 1 minute, the test ends.2. All the LEDs are turned off, and then one LED at a time turns on for 1 second, then back off. The test routine starts atthe top left panel, moving from the top to bottom of each LED column. This test checks for hardware failures that leadto more than one LED being turned on from a single logic point. This stage can be interrupted at any time.3. All the LEDs are turned on. One LED at a time turns off for 1 second, then back on. The test routine starts at the top leftpanel moving from top to bottom of each column of the LEDs. This test checks for hardware failures that lead to morethan one LED being turned off from a single logic point. This stage can be interrupted at any time.If no trigger is assigned in the DEMAND TRIGGER setting and the CRNT DEMAND METHOD is "Block Interval," usecalculation method 2. If a trigger is assigned, the maximum allowed time between two trigger signals is 60 minutes.If no trigger signal appears within 60 minutes, demand calculations are performed and available, and the algorithmresets and starts the new cycle of calculations. The minimum required time for trigger contact closure is 20 μs. USER-PROGRAMMABLE LEDS LED TESTSee below TRIP & ALARM LEDSSee page 5-107 USER-PROGRAMMABLE LED 1See page 5-107 USER-PROGRAMMABLE LED 48 LED TEST LED TEST FUNCTION:DisabledRange: Disabled, Enabled LED TEST CONTROL:OffRange: FlexLogic operand
