21
RCM-26 Remote Control Module
Owner’s Manual
* With longer cables and many participants on the CAN-bus, termination
resistors with higher impedance than the specified 120
Ω
are recommended to
reduce the ohmic load of the interface drivers and therefore the voltage drop
between the two cable-ends.
The following table is meant for first assessment of necessary cable diameters
for different bus lengths and bus-participant numbers.
Additionally, the length of branch lines - for participants that are not directly
connected to the CAN-bus - is also of importance. For data transfer rates of up
to 125 kbit/s, the maximum length of a single stub cable should not exceed 2
meters. For higher bit rates a maximum length of only 0.3 meter is still
permissible. The entire length of all branch lines should not exceed 30 meters.
Bus Length
(in m)
Data Transmission Cable
Termination
(in
Ω
)
Max. Data
Transfer Rate
Resistance
per Unit
Length
(in m
Ω
/m)
Cable Diameter
0...40
< 70
0,25...0,34 mm²
AWG23, AWG22
124
1000 kbit/s
at 40 m
40...300
< 60
0,34...0,6 mm²
AWG22, AWG20
127
500 kbit/s
at 100 m
300...600
< 40
0,5...0,6 mm²
AWG 20
150...300*
100 kbit/s
at 500 m
600...1000
< 26
0,75...0,8 mm²
AWG 18
150...300*
62,5 kbit/s
at 1000 m
Bus Length
(in m)
Number of Units on the CAN-Bus
32
64
100
100
0,25 mm²/AWG24
0,34 mm²/AWG22
0,34 mm²/AWG22
250
0,34 mm²/AWG22
0,5 mm²/AWG20
0,5 mm²/AWG20
500
0,75 mm²/AWG18
0,75 mm²/AWG18
1,0 mm²/AWG17
Summary of Contents for RCM-26
Page 1: ...OWNER S MANUAL BEDIENUNGSANLEITUNG MODE D EMPLOI RCM 26 Remote Control Module ...
Page 23: ...BEDIENUNGSANLEITUNG RCM 26 Remote Control Module ...
Page 45: ...MODE D EMPLOI RCM 26 Remote Control Module ...
Page 72: ...72 RCM 26 Remote Control Module 4 3 Dimensions Abmessungen ...
Page 73: ...RCM 26 Remote Control Module 73 ...
Page 74: ...Notes ...
Page 75: ...Notes ...
