Initial Setup
VC3700 User’s Manual
Valco Cincinnati
47
Automatic Ratio Compensation
To set ratio compensation automatically, follow these steps:
Note!
If using jam prevention, you must disable the stop circuit before using automatic ratio compensation.
Otherwise, machine will shut down.
1. Press the “PRD LENGTH” button in the level-4 menu screen. The product length screen displays.
2. Using the numeric keypad, enter the exact product length.
3. Press the “ENTER” button. (The “OK DONE” message displays.)
4. Press the “EXIT” button to return to the level-4 menu screen
5. Press the “RATIO COMP” button in the level-4 menu screen. The ratio compensation screen displays.
6. Press the “AUTO” button. The automatic ratio compensation screen displays.
7. Run the line, allowing scanner 1 to scan the whole product.
Note!
After the control has determined the number of encoder pulses per inch (25.4 mm) of product line
travel, the value will be displayed in the automatic ratio compensation screen. Product length is seen
on the left side of the screen and encoder pulses per inch (25.4 mm) of product travel are seen on the
right side of the screen.
8. Press the “SAVE” button to accept the new ratio compensation setting.
Note!
Automatic ratio compensation is used to determine a general ratio compensation to a resolution of
several pulses.
9. Ensure that ratio compensation is accurate by measuring the length of a glue bead dispensed at low speed.
10. If necessary, use the manual ratio compensation to fine-tune the ratio compensation to a resolution of 0.1
pulse.
11. After the ratio compensation has been established, add 2 inches (50 mm) to the product length setting in
order to allow the jam preventer and scanner lockout functions to operate correctly.
Specify On and Off Compensation
1. The channel compensation allows a turn-on and turn-off time to be entered for each glue valve. Press the
“COMP CHAN1” button in the level-4 menu screen. The compensation setting screen displays.
2. Press the “ON=” button.
3. Using the numeric keypad, enter the manufacturer-specified “ON” compensation (turn-on time) in millisec-
onds for the channel 1 glue valve.
Note!
If compensation value is not known, follow the “Unknown Compensation Value” procedure on the
following page.
4. Press the “ENTER” button. (The turn-on time displays in the “ON=” window and the “OK DONE” message
displays.)
5. Press the “OFF=” button.
6. Using the numeric keypad, enter the manufacturer-specified “OFF” compensation (turn-off time) in
milliseconds for the channel 1 glue valve.
Summary of Contents for VC3500
Page 1: ...VC3500 User s Manual Software Version 3 X Manual Number MCO35 Manual Release Date July 1999 ...
Page 19: ...Installation VC3500 User s Manual Valco Cincinnati 16 Figure 8 Internal Connections Diagram ...
Page 88: ...VC3700 User s Manual Software Version 3 X Manual Number MCO34 Manual Release Date July 1999 ...
Page 181: ...VC3500 VC3700 Troubleshooting Manual Manual Number MC048 Release Date May 1999 ...
Page 185: ...VC3500 VC3700 Troubleshooting Manual Valco Cincinnati Page 1 System Level Documents ...