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Model PDP DPU Installation, Preparation and Adjustment
Mounting the DPU
1-2
The processor cards mounted behind the gray and white front panel consist
of the motherboard, Data Highway Card, and the Control Processor Card.
The Data Highway Card and Control Processor Card are mounted as
daughter cards on the motherboard.
Except for the Control Processor Card, the front edge of each processor card
features switches, indicator lamps, and rotary dials that are visible and
accessible from the DPU front panel.
Distributed Processing Unit Specifications
Operating temperature range
Storage temperature range
Relative humidity range
Power requirements
The Model PDP Distributed Processing Unit (DPU) is mounted on the
Input/Output (I/O) backplane with Model IOP Input/Output modules.
Positioning the DPU
The DPU must be mounted in the right most position of the Model IOP rack
since the DPU is wider than the I/O cards and requires good air flow. In a
six-wide I/O rack, the mounting bracket to the left of the DPU must be
removed since the DPU requires an I/O panel.
When using a second DPU for backup, it must be mounted vertically
adjacent to the primary DPU.
When the DPU is installed in the right most slot, the DPU cover extends
over the J3 and J4 connectors on the back panel. The standard daisy-chain
cable (064353) is low profile, however, and will not cause any interference.
Any cables higher than 1 inch above the surface of the backplane, and any
terminators, will interfere with the cover. Some older cables, in particular,
will interfere with the DPU cover. It may be possible to move the terminator
to the other end of the daisy-chain or to rearrange the order of the
daisy-chain cables to eliminate the interference.
If this is not possible, a cable adapter is available (Metso Automation MAX
Controls Part Number 081580). This adapter has a metal bracket which
mounts to the power strut and a 12-inch connecting cable plugs into J3 or J4
on the back panel. It is a male-female adapter so that the original cable or
Metso Automation MAX Controls • • • • 277573 • • • •
0 to 60 degrees C
(-)25 to 70 degrees C
5 to 90% noncondensing
24 Vdc ±4 Vdc, 1.2 amps
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