SmartPAC PRO Servo User Manual
1147100
Chapter 5
– Program Mode
121
Figure 5-17. Die Protection Sensor Menu
(DiProPAC 16-sensor option shown. Your display may look different.)
Understanding Sensor Terminology
In order to make proper sensor settings on the SmartPAC PRO Servo display, you need to be familiar
with basic sensor terminology. Terms that appear on sensor displays are explained in the following
sections.
Normally Open, Normally Closed
A normally open (N/O) sensor actuates (signals SmartPAC PRO Servo) when the sensor circuit to
SmartPAC PRO Servo switches from open to closed-to-ground. N/O sensors are either “yellow” or
“green” (see page 122).
In a normally closed (N/C) sensor, the sensor circuit to SmartPAC PRO Servo is closed to ground in
its normal state. The sensor actuates when the circuit opens. Normally closed sensors are “red” (see
page 122).
Most contact sensors can be used as either normally open or normally closed, depending on how they
are connected. Some electronic sensors can be switched to work either as normally open or normally
closed. Most sensors are used as normally open because no current is flowing in the normal state.
Ready Signal
For many sensors, like those that monitor part ejection, blow-off, or feed advance, the event being
monitored must occur during a specific portion of the stroke. If the event doesn’t occur during this
period, the die may be damaged. The portion of the stroke during which a sensor must actuate is
called the Ready signal. You set a Ready signal only for green sensors, which monitor events that
must occur on every stroke.
The term “Ready signal” derives from older die protection systems on which a mechanical cam
switch on the press sent a signal to the die protection unit during the range of angles within which the
sensor was required to actuate.
The Ready signal is set by keying in the beginning (called “ready on”) and ending (called “ready off”)
angles of the range of angles during which the sensor must actuate. If the sensor does not actuate (i.e.,
closure to ground does not occur) during this window, SmartPAC PRO Servo sends a stop command
to the press. The type of stop (i.e., top stop, emergency stop, or smart stop) is programmable. See
Summary of Contents for SmartPAC PRO Servo
Page 2: ......
Page 4: ......
Page 14: ......
Page 16: ......
Page 18: ......
Page 26: ...1147100 SmartPAC PRO Servo User Manual 26 Chapter 1 Introduction ...
Page 70: ...1147100 SmartPAC PRO Servo User Manual 70 Chapter 3 Displays and Operating Modes ...
Page 158: ...1147100 SmartPAC PRO Servo User Manual 158 Chapter 5 Program Mode ...
Page 204: ......
Page 206: ......
Page 208: ......
Page 210: ......
Page 212: ......
Page 213: ......
Page 214: ......
Page 215: ......
Page 216: ......
Page 217: ......
Page 218: ......
Page 219: ......
Page 220: ......
Page 221: ......
Page 222: ......
Page 223: ......
Page 224: ......
Page 225: ......
Page 226: ......
Page 227: ......
Page 228: ......