2015
OPERATIONS
MANUAL
34
TIMING CONSIDERATIONS
JAW OPEN.
TIMED TO OPEN AT THE BEGINNING OF THE CYCLE. IN SPEEDS 50
BPM AND FASTER THE JAW WILL OPEN AT THE VERY END OF THE
CYCLE.
NEEDS TO BE FULLY OPEN BEFORE FILM DRIVE STARTS.
OPENING IS ADJUSTABLE IN SERVO SETUP SCREEN.
TYPICAL TIMING.______________________________________140-0
FILM DRIVE.
TIMED TO START AFTER THE JAW BECOMES FULLY OPEN.
FILM SPEED ADJUSTS HOW FAST THE FILM DRIVES. SHOULD BE SET
TO 2600 UNLESS ADVISED OTHERWISE BY A PACMAC REP.
FILM DRIVE, FILM SPEED, AND BAGS PER MINUTE SETS THE FILM
DRIVE END DEGREE IN THE DISPLAY STATUS SCREEN. THIS VALUE
IS USEFUL FOR TIMING OTHER ASSEMBLIES.
NOTHING SHOULD TOUCH THE FILM UNTIL THE FILM HAS COME
TO A COMPLETE STOP.
TYPICAL TIMING._________________________________________20
VERTICAL HEATER
TIMED TO MEET THE FILM AS IT STOPS.
MOST FILMS REQUIRE 100 DEGREES OF DWELL TIME.
DWELL TIME DOSEN’T START UNTIL THE HEATERS TOUCH THE FILM.
TEMPERATURE RANGES DEPENDING ON FILM AND ZIPPER
THICKNESS.
FILM DRIVE END DEGREE – 40 = VERTICAL HEATER START TIME.
FILM DRIVE END 100 = VERTICAL HEATER STOP TIME.
TYPICAL TIMING ____________________________________100-300
VERTICAL COOLERS
USED TO CURE THE SEAL AFTER HEATING.
TIMED TO START AFTER THE VERTICAL SEAL HEATERS RETRACT.
CAN BE TIMED TO COOL AT THE BEGINNING OF THE CYCLE.
TYPICAL TIMING END OF CYCLE._____________________300-359
TYPICAL TIMING BEGINNING OF CYCLE.________________1-100