Wesley BC-620-4CA - Manual (Page 12)

8 Curtis 1234/36/38 Manual,
OS
11
LOW CURRENT CONNECTIONS
All low power connections are made through a single 35-pin AMPSEAL con-
nector. The mating plug housing is AMP p/n 776164-1 and the contact pins
are AMP p/n 770520-3. The connector will accept 20 to 16 AWG wire with
a 1.7 to 2.7mm diameter thin-wall insulation.
The 35 individual pins are characterized in Table 2.
2 — INSTALLATION & WIRING: Low Current Connections
J1
Low current wiring recommendations
Motor encoder (Pins 31, 32)
All four encoder wires should be bundled together as they run between the
motor and controller logic connector. These can often be run with the rest of
the low current wiring harness. The encoder cables should not be run near
the motor cables. In applications where this is necessary, shielded cable should
be used with the ground shield connected to the I/O ground (pin 7) at only
the controller side. In extreme applications, common mode filters (e.g. ferrite
beads) could be used.
CAN bus (Pins 21, 23, 34, 35)
It is recommended that the CAN wires be run as a twisted pair. However,
many successful applications at 125 kBaud are run without twisting, simply
using two lines bundled in with the rest of the low current wiring. CAN wiring
should be kept away from the high current cables and cross it at right angles
when necessary.
All other low current wiring
The remaining low current wiring should be run according to standard practices.
Running low current wiring next to the high current wiring should always be
avoided.