Specifications

6
Curtis 1310 Manual, Rev. B
LOW CURRENT CONNECTIONS
Low current connections are made through four Molex Mini-Fit Jr. connectors.
J1 is a 24-pin connector containing most of the standard inputs/outputs.
J2 is a 6-pin connector dedicated to the CAN bus.
J3 is a 4-pin connector dedicated to the Curtis serial bus port,
used with the 1311 and 1314 programmers and the 840 Spyglass.
J4 is a 16-pin connector for the analog inputs/outputs
and encoder connections.
The 60 individual pins are characterized in Tables 2–5.
Often special VCL functions can be used to access or setup or
use of these signals. The VCL Functions column notes these when
appropriate. Each signal has a predetermined variable name or set
of variable names that allow the VCL access to the value or control
over the signal. These names are in the VCL References column.
2 — INSTALLATION & WIRING: Low Current Connections
Low current wiring recommendations
Encoders
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
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.
1
13
24
12
16
9
81
1
4
3
6
1 2
43
J1J2J3
J4