Automation
Fieldbus function modules
Lenze
3-21
8200 motec/starttec en 12/03
3
CAN I/O (system bus)
Communication medium DIN ISO 11898
Communication profile Similar to CANopen (CiA DS301)
Network topology Line (terminated at both ends with 120 Ω)
System bus stations Master or slave
Max. no. of stations 63
Baud rate [kbps] 20 50 125 250 500
Max. bus length [m]
1)
3910 1510 590 250 80
Number of logical process data channels 2
Number of logical parameter data channels 2
Electrical connection Screw terminals
Connection options Rigid: 1.5 mm
2
(AWG 16)
Flexible:
1.0 mm
2
(AWG 18) without wire crimp cap
0.5 mm
2
(AWG 20) with wire crimp cap without plastic crimp cap
0.5 mm
2
(AWG 20) with wire crimp cap with plastic crimp cap
DC voltage supply Internal
for function module
Isolation voltage to reference earth/PE 50 V AC
Ambient temperature Operation: –20 ... +60ºC
Transport: –25 ... +70ºC
Storage: –25 ... +60ºC
Climatic conditions Class 3K3 to EN 50178
(no condensation, average relative humidity 85%)
Note:
Two bus terminating resistors (120 Ω) are included in the scope of supply.
Wiring notes
We recommend the following signal cable::
System bus cable specification Total length up to 300 m Total length up to 1000 m
Cable type LIYCY 2 x 2 x 0.5 mm
2
CYPIMF 2 x 2 x 0.5 mm
2
(shielded twisted pairs) (shielded twisted pairs)
Cable resistance ≤ 40 Ω/km ≤ 40 Ω/km
Capacitance per unit length ≤ 130 nF/km ≤ 60 nF/km
Connection Pair 1 (white/brown): CAN LOW and CAN HIGH
Pair 2 (green/yellow): CAN GND
General data and operating conditions
1)
You should be aware of the additional effect of the number of stations
and the cable cross-section used on the maximum bus cable lengths.
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