1128500 WPC 2000 User Manual
3-12 Initialization, Setup, and Checkout
1. Determine how many degrees you need to increase or decrease the Top-stop angle.
• If the press top-stops after 0°, you should increase the Top-stop angle by the number of
degrees beyond 0° that the ram stops at the slowest press operating speed.
• If the press top-stops before 0°, you should decrease the Top-stop angle by the number
of degrees before 0° that the ram stops at the slowest press operating speed.
2. Install the heaviest upper die in your press. Adjust the counterbalance for ram weight (if
the press has a counterbalance).
3. With WPC 2000 powered up and the press in Inch mode, press the Reset/Select button
repeatedly until the “Top Stop Angle” indicator is lit.
4. Set the Top-stop “On” Angle you determined in step 1, using the WPC Settings key
switch. Turning the key to “+” (counterclockwise) increases the angle; turning the key to
“–” (clockwise) decreases the angle.
5. Run the press in Continuous mode by turning the Mode Select switch to “CONT,” select
the “Angle/SPM” indicator segment, using the Reset/Select button, and check the press
speed shown in the LED display.
If your press does not run in Continuous, initiate a stroke with the Mode Select switch set
to “SINGLE.”
6. When the press reaches normal operating speed in Continuous or the Auto Carry-up Angle
is passed in Single-stroke, Top-stop the press. Note the crankshaft angle shown in the
LED display.
If the Top-stop angle is 0° ±2°, go to step 7.
If the Top-stop angle is more than 2° beyond 0°, repeat steps 3 through 6 until the press
top-stops at 0° ±2°.
7. Repeat step 6 at least five times to make sure that the press top-stops at 0° ±2°.
CHECK OVERRUN SENSOR SETTING WHEN YOU CHANGE TOP-STOP ANGLE
Check and reset the overrun sensor angle when you reset the Top-stop angle. Remember
that the Top-stop angle has an internal dwell of 20°. The internal Top-stop timing turns off
20° after the Top-stop angle that you set. This internal Top-stop timing must turn off before
the overrun sensor turns on. If the Top-stop timing and the overrun sensor are “on”
simultaneously, an “80 series” error code will display (see page 5-18).
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