EM522-CAN Field bus Stepper Drive User Manual V1.0
6
Recommend to connect a noise filter between power supply and drive, can improve anti-interference performance.
4.1.2 I/O signal cable
Wire diameter: IN1+, IN1-, IN2+, IN2-, IN3+, IN3- terminal wire diameter≥0.12mm
2
(AWG24-26)
Recommended to adopt shielded twisted pair cable, cable length as short as possible, suggest no more than 3 meters
Wiring: As far as possible away from the power line wiring, in order to prevent interference
Please connect surge absorber to inductive device, such as anti-parallel diode for DC coil, parallel RC-snubbers circuit
for AC coil.
4.1.3 CAN communication cable
There are coupling relationship between CAN bus cable length, guide line cross sectional area, terminal resistance and
communication rate, recommended combinations as below:
Length
(m)
Bus cable
Terminal
resistance
(Ω)
Communication
rate
Resistance per unit
length(mΩ/m)
Cross-sectional area(mm²)
0-40
70
0.25-0.34
120
1 Mbit/s
40-300
<60
0.34-0.6
150-300
<500 Kbit/s
300-600
<40
0.7-0.75
150-300
<100 Kbit/s
600-1000
<26
0.75-0.8
150-300
<50 Kbit/s
!
Notice
Notes:
(1) shielding and twisted-pair cable is suggested.
4.1.4 Terminal resistance
Note
Terminal resistance
It must to connect an 120Ω resistance if the
drive on the end of bus, and customer need to
order the terminal resistance as shown right
4.2 Typical Connection
EM522-CAN adopt CANopen protocol, typical schematic wiring topology structure as below
Figure 2: The topology of the CAN network
Controller&Control card
