Technosoft 2021
32
iPOS360x HX-CAN Technical Reference
3.5.11 CAN-bus connection
3.5.11.1 CAN connection
Figure 3.5.11.1
CAN connection
Remarks:
1. The CAN network requires a 120-Ohm terminator. This is not included in the drive.
Figure 3.26 shows how to connect it on your network
2. CAN signals can sustain up to +/-36V without damage.
3.5.11.2 Recommendation for wiring
a) Build CAN network using cables with twisted wires (2 wires/pair), with CAN-Hi twisted together with CAN-Lo.
It is recommended but not mandatory to use a shielded cable. If so, connect the shield to GND. The cable
impedance must be 105 ... 135 ohms (120 ohms typical) and a capacitance below 30pF/meter.
b) Whenever possible, use daisy-chain links between the CAN nodes. Avoid using stubs. A stub is a "T"
connection, where a derivation is taken from the main bus. When stubs can’t be avoided keep them as short
as possible. For 1 Mbit/s (worst case), the maximum stub length must be below 0.3 meters.
c) The 120
Ω
termination resistors must be rated at 0.2W minimum. Do not use winded resistors, which are
inductive.
Figure 3.5.11.2
Multiple-Axis CAN network
