Wintriss dipro 1500, User Manual

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Introduction to DiPro 1500
DiPro 1500 User Manual 9 Ch 1 1092000
Understanding sensor terminology
In order to make the proper settings for your sensors using the DiPro display, you have to
know what certain terms mean. You will see words on the display like ready on, ready
off, NC (normally closed), NO (normally open), green, green quick check, green
constant, yellow, and red. If you are familiar with die protection sensors and controllers,
you will know what most of these terms mean already. If you do not, these key words are
explained below.
Normally open, normally closed
These terms refers to the way a sensor operates. A normally open (NO) sensor
actuates (signals DiPro) when the sensor circuit to DiPro switches from open to
closed (ground). Normally open sensors are broadly classified as yellow or green
sensors.
A normally closed (NC) sensor works just the opposite of normally open. The
sensor circuit to DiPro is closed (to ground) in its normal state. The sensor actuates
when the circuit opens. Normally closed sensors are classified as red sensors.
Most contact type sensors can be used as either normally open or normally closed
depending on how they are connected. Most sensors are used as normally open just
because you do not have any current flowing in the normal state, which is the state
the sensor will be in most of the time. Some electronic sensors can be switched to
work either as normally open or normally closed. Usually, these sensors have
amplifiers. You change their output using a switch on the amplifier.
The ready signal
The ready signal is the portion of the stroke where a sensor must actuate. For many
of your sensors, like those that monitor part ejection, blowoff, or feed advance, you
need to be sure that the event occurs during a specific portion of each stroke. If the
event occurs late, or not at all (say a part that did not eject), you are likely to have
tooling damage. The ready signal tells DiPro 1500 when to expect the actuation
from the sensor. A ready signal is set only for sensors classified as cyclic (green)
sensors. These are sensors which monitor events that must occur on every stroke.
The term "ready signal" comes from older die protection systems where you had to
set a mechanical cam switch on the press to send a signal to the die protection unit
during the portion of the stroke where the sensor had to actuate. As we saw earlier
("How DiPro works"), DiPro eliminates all this extra work because it automatically
knows where the ram is at every point in the stroke. But we still use the term "ready
signal" because it is widely understood.
To set a ready signal on DiPro, you just key in the degrees of the stroke where the
sensor must actuate. The beginning point is called
ready on . The end point is ready
off . A separate ready signal can be set for each green sensor. If the sensor does not
actuate (closure to ground) during the ready signal, DiPro will send a "stop"
command to the press. The type of stop can be a top stop or emergency stop.