Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 88)

Publication 8720MC-IN001D-EN-P — December 2002
3-26 Connecting Your 8720MC
Feedback and I/O Connectors
Six Weidmueller connectors (3 double row pairs) are used to connect
the motor feedback, the auxiliary feedback, the analog I/O, the
registration inputs, the digital I/O and the relay outputs.
Refer to page 3-25 for available pre-molded cables.
P4, and P5 Connectors
The P4 and P5 connectors on the 8720MC control board have two
mating connectors each. One is for the front row and one is for the
back row when looking directly at the main control PC board. P4
connections 1-4, back row, are made through the lower mating
connector and connections 5-8 are made through the front mating
connector. The same is true for P5, but the lower terminations are 1-18
and the upper terminations are 19-36. Refer to Figure 2.4 for the P4
and P5 connectors.
The mating connectors are mechanically keyed and, therefore, it is not
possible to put the connectors in backward. It is possible to switch the
front and back connectors therefore care must be taken to prevent
reversing the upper and lower connectors. You can accomplish this by
using connector labels or you can tie wrap the cables to the chassis.
Control Signal Wire Specifications
IMPORTANT
The front and back connectors are identical and
consequently care must be taken to label the cables
so that they can not be inadvertently switched.
IMPORTANT
Keep the feedback and signal wiring separated from
noise generating sources such as the motor cables.
Wherever possible run the control wires in different
conduits from the motor leads.
This Belden wire or
equivalent:
Should have these specifications:
8760 0.750 mm
2
(18 AWG), twisted pair, braided shield
8770 0.750 mm
2
(18 AWG) 3 conductor, braided shield
9460 0.750 mm
2
(18AWG) twisted pair, braided shield