V6.230 2013101772Using the LCD:SPkp1+ OUTnwhere kp1=,12,13,14,21,22,23,24,31,32,33,34 and n=1,2,3,4,5,6,7,8SPkp2+ OUTnwhere kp2=,12,13,14,21,22,23,24,31,32,33,34 and n=1,2,3,4,5,6,7,8Using RS232:kk1/0/1/n where kk1=Parameter # and n=1,2,3,4,5,6,7,8Kk2/0/1/n where kk2=Parameter # and n=1,2,3,4,5,6,7,8Use the INVERT OUTn setting to cause the output relay to drop out when eithertemperature set point is achieved. The resulting Boolean equation is:OUTn = !(Temperature Set Pointkp1 + Temperature Set Pointkp2)4.9.9.2 Periodic exercise of cooling fans:Use a time set point with the temperature set point, controlling the cooling fans,to exercise the fans on a daily basis. This is especially useful in areas where youmight be running the fans continuously during the cooler months of the year. TheBoolean equation to accomplish this task is:OUTn = Time Set Pointm + Temperature Set PointklTherefore, the cooling fans will come on when either the over temperaturecondition is achieved or the time of day is in between 02:00 to 03:00 hours.To program the controller simply assign the time and temperature set points asfollows:Using the LCD: 02:00 to 03:00 > OUTnSPk + OUTnUsing RS232: mm/02:00/03:00/n where mm=setting line # and n=1,2,3,4,5,6,7,8Kk/0/1/n where k=parameter # and n=1,2,3,4,5,6,7,8To operate the output in fail-safe, just invert the expression using the outputINVERT setting. Remember to use the B contact of the output relay.4.9.9.3 Cooling Fan Alarm:This example shows how to generate an alarm when cooling is commanded butthe measured current as sensed by the Aux CT is not within a specified range.The Boolean equation for this function is expressed as:
