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Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE Manual, os 30
24 NOVEMBER 2015
LOW CURRENT CONNECTIONS
All low power connections are made through a single 35-pin AMPSEAL con-
nector. e mating plug housing is AMP p/n 776164-1 and the contact pins
are AMP p/n 770520-3. e connector will accept 20 to 16 AWG wire with
a 1.7 to 2.7mm diameter thin-wall insulation.
e 35 individual pins are characterized in Table 2.
2 — INSTALLATION & WIRING: Low Current Connections
13
24
1
23
35
12
J1
Low current wiring recommendations
Position feedback (Pins 7, 26, 31, 32)
All four wires (+5V, Feedback A, Feedback B, and I/O ground) should be bundled
together as they run between the motor and controller logic connector. ese
can often be run with the rest of the low current wiring harness. e 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 kbit/s 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 them at right angles when
necessary.
All other low current wiring
e remaining low current wiring should be run according to standard prac-
tices. Running low current wiring parallel to the high current wiring should
always be avoided.
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