Edge Maxx
Operating Principles
5-7
Control System
Various components work together to control
the work of the machine. This control system
includes:
CHI Panel
I/O Control Panel
Photosensors
Proximity Sensors
Control of the machine is done in two areas.
Input from the operator takes place at the CHI
Panel, located on the outside of the unit. These
commands are combined with internal signals in
the I/O control panel.
CHI Panel
Operators control the unit with the Chicago
High Intelligence (CHI) panel located on the
front of the right endframe. The
OPERATING
GUIDELINES
chapter and
CHI PANEL
OPERATION
bulletin discuss the use of this
panel.
•
•
•
•
Inside the right endframe is the I/O control
panel. This control panel accepts the operator
inputs from the membrane switches on the front
of the panel and sends them to the I/O control
panel. In addition, the I/O control panel sends
operation and diagnostic messages to the CHI
Panel. These are shown in the display at the top
of the panel.
A serial cable provides communication
between the CHI Panel and the I/O control
panel. Two LED’s on the communications head
of the control panel show when it is receiving
information from the CHI Panel (RX) and
sending data to it (TX).
Communications and the Control Panel
All the input signals from the sensors go
through the I/O control panel, which also powers
the sensors. When the appropriate LED on the
I/O control panel come on, it means that a signal
has been received from a sensor. Each LED is
numbered for easy identification.
Output signals from the I/O control panel go
directly to the output devices. These devices are
also powered via the I/O control panel.
Most output devices like air valves, relays, and
indicators run on the 24 VDC that comes right
from the I/O control panel. For other devices that
require a different voltage, the I/O control panel
sends an open collector output signal to drive the
logic input on a separate driver board.
When the appropriate LED on the I/O control
panel comes on, it shows that a signal has been
sent to a device. The LED on the I/O control panel
comes on to show that the panel is functioning
properly.
For open collector output, the LED means that
the I/O control panel is sending the signal to the
output device. Each LED is numbered for easy
identification.
Figure 5-5: CHI Panel.
TOC
INDEX
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