ABB ANR96 User Manual

ABB ANR96 User Manual Manual pdf 56 page image

ANR96 - USER MANUAL-56-11.10) DIGITAL INPUTIn the DIGITAL INPUT menu it’s possible to program the digital inputfunction for both standards and options. The 2 standards digital input canbe programmed how follow:• Type, defines the type of operation:- NOT USED: if none input is selected or enabled.- CLOCK SYNCRONIZATION: Synchronization of the internal clock.When the impulse arrives on digital input, the internal clock’s secondscounter is cleared if it’s between 00 and 29, while if it’s between 30 and59, it’s cleared and the minutes counter go on the next minute.Example:17:31:23 (hh:mm:ss) will be 17:31:00 08:45:55 (hh:mm:ss) will be 08:46:00- PERIOD: to change the bands for the energy counter with time bands.The following table shows the time band selected depending of the status of digital inputs:DIGITAL INPUT 2 DIGITAL INPUT 1 BAND SELECTEDOPEN OPEN P1OPEN CLOSED P2CLOSED OPEN P3CLOSED CLOSED P4CLOSED: there is a voltage from 12Vcc and 24Vcc.OPEN: the voltage is 0Vcc.The change of band happens when the instrument recognizes a change of status on one of digitalinput at least.At the moment of the digital inputs enabling like “Periods” and at the ANR’s turn on with theenabling already set, the energy counters increment continue on the last band enabledindependently of the digital inputs status until the change of the minute of the internal clock or thechange of the status of one of digital input.- COUNTERS: the generic counters are enabled. When an input receives a pulse, the counter,joined at this input, is increased by the value that depends of the weight set.- Ext.DI: the function depends of the Sync. Avg set in the menu AVERAGE (par. 11.5). If Sync. Avgis Int.Rtc a signal (12÷24Vcc) on the digital input 1 change the band (from P1 to P2 and viceversa) while a signal (12÷24Vcc) on the digital input 2 is used to synchronize the average and theaverage powers storing (if enabled) with a de-bounce time of 30 seconds. The digital inputs areset automatically to Ext.DI if the Sync. Avg is set to Ext.DI or Int+Ext.No congruent operation of digital input Type and Sync. Avg will involvethe visualization of the warning message on the display (see for examplein this figure). An affirmative answer will confirm the new setting on thedigital input and the setting of Sync. Avg to Int.Rtc.No congruent set between the Type of digital inputs and the TRIGGERstorage will involve the visualization of the warning message on thedisplay (see for example in this figure). An affirmative answer will confirmthe new setting on the digital input and the disabling of the trigger storagefunction.