1128600
SmartPAC 2 with WPC 2000 Integration User Manual
4-30
Initialization Mode
You can view the current Clutch Air Pressure and the Main Air Limit on the Press Control
Parameters screen in Run mode (see page 6-30). To disable clutch pressure monitoring, enter
zero (0) in this field. When you do so, clutch pressure readings and the Low Limit setting are
not displayed in Run mode.
The value you enter in the CNTR BAL +/- field sets the tolerance for the Counterbalance
Setpoint you establish in Program mode (see page 5-48). For example, if you program a
Counterbalance Setpoint of 40 psi and a Counterbalance Tolerance of +/- 5 psi,
Counterbalance Air pressures must remain within a range of 35 to 45 psi whenever the press is
at or passing through Top Dead Center (TDC). (Counterbalance pressure can vary outside
this range at Bottom Dead Center (BDC)). If the counterbalance pressure falls outside the
tolerance you set, an F46 fault displays on the SmartPAC 2 LCD (see page 7-14).
You can view the current Counterbalance Air Pressure and Counterbalance Setpoint on the
Press Control Parameters screen in Run mode (see page 6-30). To disable pressure
monitoring, enter zero (0) in this field. When you do so, the CNTR BAL SETPOINT field
will not display on the Press Control Parameters screen in Program mode, and counterbalance
pressure readings and the Counterbalance Setpoint will not display in Run mode.
Setting the Stop-time Limit
This item enables you to set the limit for your press’s stopping time. The stopping time
is the
time that it takes the crankshaft to stop once the dual safety valve (DSV) has been
de-energized. The Brake Monitor checks the stopping time of the press on every top-stop, and
whenever the stopping time increases to within 10 milliseconds of the Stop-time Limit you set
on this screen, the Brake Warning LED on the SmartPAC 2 front panel flashes. This warning
alerts maintenance personnel to perform the necessary repairs on the press.
Whenever the press’s stopping time exceeds the Stop-time Limit, SmartPAC 2 displays the
“STOP TIME EXCEEDED” message (see page 7-26) and prevents the press from operating
until the problem has been corrected.
The Stop-time Limit default is 500 mS, which is set when WPC 2000 is initialized (see
Initializing WPC 2000 Parameters
, page 4-34). The Stop-time Limit you specify is displayed
on the Stop Time Status screen in Run mode (see
RECALCULATE SAFETY DISTANCE WHEN STOP TIME CHANGES
• Perform a 90
°
Stop Test any time you change the Stop-time Limit (see page 6-22).
• Recalculate the safety distance based on the new Stop-time Limit and adjust or reinstall
safeguarding devices according to the new safety distance.
Failure to comply with these instructions will result in death or serious injury.
DANGER
!
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