12LS Controller Installation and Operation Manual, Rev 3 ... - Watlow

5.2.6 GENERAL PID CONSTANTS BY APPLICATIONPROPORTIONAL BAND ONLY (P)PB = SET 7% of SP Example: SP = 450 PB = 31TI = OFFTD = OFFOutput Filter = 0P with INTEGRAL (PI)PB = Set 10% of SP Example: SP = 450 PB = 45TI = 60TD = OFFOutput Filter = 2PI with DERIVATIVE (PID)PB = Set 10% of SP Example SP = 450 PB = 45TI = 60TD = Set 15% of TI Example TI = 60 TD = 9Output Filter = 2ABOVE VALUES HAVE BEEN USED FOR MANY APPLICATIONS AND IN GENERALWILL BE USEFUL IF NOT FOR CONTROL THEN FOR A STARTING POINT FORTUNING THE PID. NOTE! CONTROL MUST BE IN AUTO.GENERAL PID CONSTANTS BY APPLICATION|-------------------------------------------------------------|¦ ¦ PB TI TD FIL OUTPUT CT ACT ¦¦ |---------------------------------------¦¦ ELECTRIC HEAT W/ ¦ 50 ¦ 60 ¦ 15 ¦ 4 ¦ TP ¦ 3 ¦ REV ¦¦ SOLID STATE RELAYS ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ELECTRIC HEAT W/ ¦ 50 ¦ 60 ¦ 15 ¦ 6 ¦ TP ¦ 20 ¦ REV ¦¦ MECHANICAL RELAYS ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ GAS HEAT WITH ¦ 60 ¦ 120¦ 25 ¦ 8 ¦ ANA ¦ NA ¦ REV ¦¦ MOTORIZED VALVES ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ GAS HEAT SP>1200 ¦ 100¦ 240¦ 40 ¦ 8 ¦ ANA ¦ NA ¦ REV ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ EXTRUDERS W/COOLING ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ HEAT W/SSR ¦ 50 ¦ 300¦ 90 ¦ 8 ¦ TP ¦ 3 ¦ REV ¦¦ SET SPREAD TO 0 ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ COOLW/SOLENOID VALVE¦ 10 ¦ OFF¦ OFF¦ 4 ¦ TP ¦ 20 ¦ DIR ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ COOLW/FANS ¦ 10 ¦ OFF¦ OFF¦ 4 ¦ TP ¦ 60 ¦ DIR ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ELECTRIC HEAT W/ ¦ 30 ¦ 20 ¦ OFF¦ 4 ¦ DZC ¦ NA ¦ REV ¦¦ OPEN HEAT COILS ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ELECTRIC HEAT W/ ¦ 60 ¦ 60 ¦ 15 ¦ 4 ¦ ANA ¦ NA ¦ REV ¦¦ SCR CONTROLLERS ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦|-------------------------------------------------------------|5-6