1126800 SmartPAC 2 with WPC Integration
page 466 Glossary
overrun limit switch works in conjunction with the resolver by constantly monitoring
its crankshaft angle position. WPC receives a signal from the
overrun sensor and compares it to the resolver angle. WPC
expects to see the overrun limit switch at the same resolver angle
every stroke. If this does not occur, this means that the resolver
is no longer rotating at a 1:1 ratio with the press. It could be
because the resolver drive has slipped or has broken, or the
resolver itself is broken. SmartPAC with WPC will signal an
emergency stop and display an error message.
The overrun limit switch consists of a magnet, which you mount
on the crankshaft (or other shaft), and a stationary magnetic
switch, which is mounted just above the magnet so that it detects
the magnetic field on every stroke. The magnetic switch is also
called an "overrun sensor.”
overrun sensor see "overrun limit switch"
overrun timing dependent upon the proper installation of the overrun limit
switch, and is a function of the stopping time of the press;
provides a backup for top stop timing and is influenced by the
condition of the brake linings and the press speed; should the top
stop output relay fail, overrun will provide the signal to stop the
press; if the overrun limit switch has not been properly installed,
overrun timing in WPC will not work
pinch point hazardous area in and around the die; light curtains, two-hand
controls, and/or other barriers must be mounted to protect the
operator from it
PMA acronym that stands Precision Metalforming Association
position sensor magnetic proximity switch that monitors the resolver's position;
consists of a magnet which can be mounted on the crankshaft (or
other shaft) and a stationary sensor
Program/Run key allows one to access the Program and Run modes by positioning
the key to "Program" or "Run"; can also be used to lock out
access to these modes by removing the key, so settings cannot be
changed
PS/2 a type of connector into which you can plug a mouse or
keyboard. There is a PS/2 connector on the SmartPAC 2 PC
board at
ready signal portion of the stroke during which SmartPAC monitors a sensor
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