ABB AC 800M User Manual page 34

MBP cable type and speed
The bus trunk cable has a passive line terminator at each end.
The Power Link Modules of the PROFIBUS Linking Device LD 800P possess an
integrated bus terminator, which terminates the PROFIBUS PA line unilaterally
and therefore eliminates the need for a separate bus terminator on the Power Link
Modules. (see also
34
Table 4. Basic data for the PROFIBUS PA reference cable
Parameter
Cable design
Conductor cross section (nominal)
Loop resistor (direct current)
Wave resistance at 31,25 kHz
Wave attenuation at 39 kHz
Capacitive asymmetry
Group runtime distortion (7,9 ... 39) kHz 1,7 µs
Covering level of the shield
PROFIBUS DP/PA Linking Device LD 800P
Section 2 Transmission Technology
PA, Cable type A
shielded twisted pair
0,8 mm²
44 Ohm/km
100 Ohm +20%
3 dB/km
2 nF/km
90%
on page 40
3BDS009029R5001 B