Fieldbus Link - ABB NPBA-12 Installation And Startup Manual

Appendix C – Technical Data

Fieldbus Link

C-2
Compatible Devices: All devices compatible with the PROFIBUS-DP
and PROFIBUS-DPV1 protocols
Size of the Link: 127 stations including repeaters (31 stations and 1
repeater per segment)
Medium: Shielded, twisted pair RS485 cable
• Termination: built in the NPBA-12 Module
• Specifications:
Parameter
Impedance
Capacitance
Resistance
Wire gauge
Conductor area
• Maximum Bus Length (m):
≤ 93.75
187.5
Line A 1200 1000
Line B 1200 600
Topology: Multi-drop
Serial Communication Type: Asynchronous, half Duplex
Transfer Rate: 9.6, 19.2, 44.45, 93.75, 187.5, 500, 1500, 3000, 6000,
or 12000 kbit/s
Protocol: PROFIBUS-DP, PROFIBUS-DPV1
Line A
PROFIBUS-DP DIN 19245 Part 1
135 to 165 100 to 130
(3 to 20 MHz) (f > 100 kHz)
< 30
< 110
> 0.64
> 0.34
Transfer Rate (kbit/s)
500 1500 3000
400 200 100
200 – –
NPBA-12 Installation and Start-up Guide
Line B
Unit
Ω
< 60 pF/m
Ω
– /km
> 0.53 mm
2
> 0.22 mm
6000 12000
100 100
– –