Lenze L-force Communication ModemCAN EMF2181IB - Page 54

6 Electrical installation
Connection of system bus (CAN)
EDKMF2181 DE/EN/FR/ES/IT 3.0 54

H1_E_INST-SteckerFederkraftAnschluss FKCT
Between CAN_LOW and CAN-HIGH the CAN bus has to be terminated by resistors (120 Ω ).
The Sub-D plug with an integrated terminating resistor (order no. EWZ0046, not included
in the scope of supply) complies with the recommendation DS 102-1 of CiA.
L
EWZ0046
OFF
ON
OFF
ON
ON
OFF
ð
ð ð ð
OUTIN IN IN
On
Off
On
120 120
120
L
EWZ0046
L
EWZ0046
L
EWZ0046
2181FEW004
Specification of the transmission cable
We recommend the use of CAN cables in accordance with ISO 11898-2:
CAN cable in accordance with ISO 11898-2
Cable type Paired with shielding
Impedance
120 Ω (95 ... 140 Ω )
Cable resistance/cross-section
Cable length ≤ 300 m ≤ 70 m Ω /m / 0.25 … 0.34 mm
2
(AWG22)
Cable length 301 … 1000 m
≤ 40 m Ω /m / 0.5 mm
2
(AWG20)
Signal propagation delay
≤ 5 ns/m
Observe the information on the bus cable length (55) !