LINK Systems OmniLink II Press Automation Control - Manual (Page 106)

August 30, 2002 Manual Version 1.0 6.1
Section 6 Digital Die Protection and Process Monitor
The Digital Die Protection and Process Monitor Module is an optional addition to the OmniLink II Press
Automation Control which is designed for use in monitoring various material and tool conditions that
are important to the correct operation of the process. This is accomplished by installing appropriate
sensors and probes in or near the die and connecting these sensors to channel inputs of the Die
Protection and Process Monitor Module. The channels are then programmed through the OmniLink II
Operator Terminal to perform the desired monitoring function for the connected input. In the event that
improper conditions occur the machine can be stopped, avoiding excessive delay in the production
process or damage to the tooling and/or press. The die protection and process monitor units come in
both eight and sixteen channel versions. The Model 5121 is an eight channel die protection module.
The Model 5120 is a sixteen channel die protection module.
The OmniLink II Press Automation Control can provide for up to five digital die protection modules.
Any combination models 5120 or 5121 totaling up to five can be connected. If five Model 5120 sixteen
channel die protection modules are added to the OmniLink II Press Automation Control, 80 digital
inputs can be monitored.
Section 6.1 Features of the Digital Die Protection and Process Monitor
The module has either eight or sixteen channels available for use with die sensors and probes. These
channels may be used to monitor parts ejection, stock in place, material in position, stock buckling, end
of stock, or other functions of interest. Either solid state (NPN or PNP) or probes and mechanical
sensors may be used as inputs to the Digital Die Protection and Process Monitor Module. No
configuration is necessary to select the sensor type.
The sensors are electrically connected to the unit by wiring directly to the terminals which are located
inside the unit, by connecting to the optional front panel receptacles, or by connecting to the optional
quick die change receptacle. On some models up to eight sensors may be connected to the front panel of
the Sensor Interface via widely available Micro-DC connector receptacles, or alternatively four sensors
can be connected to the four panel binding posts which provide quick single wire connection of probes
and other grounding mechanical devices. Many customers choose to connect sensors that are mounted
in the tooling to the module via a multi-conductor cable that connects to a quick die change receptacle,
which is located on the bottom of the unit. This quick die change receptacle can be the 19 pin circular
receptacle that is supplied by Link Systems on the “QCR” models or it can be a receptacle that is
specific to the customer. The “NC” models are supplied with a removable blank panel on the bottom of
the unit. A customer specific receptacle can be installed in this blank panel. See Table 6-1 for a listing
of available models.
The module can be programmed to monitor each individual input in the manner necessary to insure that
the process is proceeding in the intended manner. Each channel can be programmed to function as one
of the following types: Static, Cyclic, Transfer, In Position, One Part Detection, or Two Part Detection.
In addition, a Custom channel type is available. This Custom type allows for a list of programmable
rules to be applied to a channel. Since the rules are programmable, custom monitoring logic can be
applied to an individual channel. All of the above listed monitoring types will be described in
subsequent sections of this manual.