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Performance I/O Link cards. The module is not provided with ground, by way a metal strip on both the
module and a mounting rail, until the module is seated in its connector.
The HPM UCN Interface module is mounted in the connector directly below the High-Performance
Comm/Control card in slot 1 of the Left 7-Slot or 15-Slot card file, or in slot 9 of the Right 7-Slot card
file. The module's case has two extrusions that are inserted into a rail below the card cage to guide the
module into position. A captive spring-loaded screw with a knurled head secures the module in place.
Tightening the knurled screw
The UCN Interface Module knurl knob (grounding) fastener must be sufficiently tightened while no
UCN drop cables are connected to the front panel connectors. The cables interfere with the tightening
procedure. The knurled screw must first be finger-tightened by using your thumb and forefinger and then
tightened further using a screwdriver. Use the Phillips-head screwdriver slot in the end of the knurled
screw. If a torque screwdriver is available, a setting of 15 inch-pounds is sufficient. If a torque
screwdriver is not available, tighten the screw one more turn past finger-tight. Do not over tighten and
possibly strip the Phillips-head screw insert.
HPM UCN Interface module
The following figure illustrates the installation of the HPM UCN Interface module in a card file.
R688
December 2020
Figure 200 HPM UCN Interface Module Installation
HPM High-Performance Process Manager Service
Honeywell
6 Removal and Replacement
6.3 HPMM and IOP Cards
405
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