Wintriss SmartPAC PRO, User Manual

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SmartPAC PRO User Manual 1143100
Chapter 6 – Using DiProPAC Die Protection (Optional) 169
Static Sensors: Yellow and Red Sensors
Red and yellow sensors are easy to program: First name the sensor, select Red or Yellow, and select
the stop type. Their operation is simple, too: If a Yellow sensor turns On, or a Red sensor turns Off,
the press stops. Because these sensors operate independently of the crankshaft, you do not set a Ready
signal for them.
Yellow Sensors
Yellow sensors are normally open. When a yellow sensor closes (actuates), SmartPAC PRO sends a
Stop command to the press.
Red Sensors
Red sensors are normally closed (actuated). A Stop command is sent to the press whenever a red
sensor turns off.
In addition to their basic function, Yellow and Red sensors also offer the following options.
Auto Reset (Static Sensors)
Many hand-fed operations use Red (normally closed) sensors to ensure the part is properly placed in
the die. When the part is in place, the Red sensors are “ON”, and the press is allowed to run.
However, each time the operator removes the finished part, a fault occurs, requiring the operator to
reset the error on every stroke. This isn’t really an error; it’s a normal part of the operation.
For such applications, an “Auto-Reset ”
function has been added to the static sensors. When Auto
Reset is enabled for a sensor, the error is automatically cleared when the sensor input is appropriately
satisfied. Under the scenario described above, the sensor would display a fault (and the stop relays
would open) when the operator removes the part, but would automatically reset the fault (and close
the stop relays) when the new part is properly in place – negating the need for the operator to press
Reset before stroking the press.
Under normal operation, the sensors function as they always have. When a fault occurs, the press
stops. Fault messages are recorded in SmartPAC PRO’s Event Log, so errors that automatically reset
before the operator has a chance to see them can be found in the Event Log.
The Auto Reset capability can be enabled from the sensor’s program summary screen, Figure 6-11.
The default setting is OFF.