ABB Navigator 600 Series User Manual

Navigator 600 Series Analyzers
AW641 and AW642 2Installation
IM/NAV6PBS Issue 1 3
2 Installation
2.1 Installation Overview – Fig. 2.1
All devices are connected in a bus structure ('line'). Up to 32
stations (master or slaves) can be linked to create one
'segment'.
Each end of a segment must be terminated by an active bus
terminating resistor. Both bus terminators must always be
powered to ensure fault-free operation therefore it is strongly
recommended that they are connected to a back-up power
supply.
Up to three line bus amplifiers (repeaters) can be used to extend
the network to a total of four segments, allowing a maximum of
125 devices to be installed in the system.
2.2 Cable Length
The maximum cable length of a segment is determined by the
transmission speed – see Table 2.1. The cable length specified
can be extended by using repeaters but it is recommended that
no more than three repeaters are connected in series.
2.3 Cable Specification
The cable lengths in Table 2.1 refer to the following cable type:
Suitable Profibus cable, part nos. PCA010, PCA 011 and
PCA 012, can be obtained from ABB. Refer to Data Sheet
10/63-6.46 EN.
2.4 Device Integration – the GSD File
Profibus devices differ with respect to available functionality and
parameters and these vary individually for each device type and
manufacturer. In order to obtain 'Plug-and-Play' configuration
for Profibus, characteristic device communication features such
as manufacturer name, device name, hardware/software
versions, baud rate and the number and nature of
inputs/outputs are defined in an electronic device data sheet
known as a GSD file.
A GSD file is readable ASCII text file that contains both general
and device-specific specifications for communication. Each of
the entries describes a feature supported by a device. By the
means of keywords, a configuration tool reads the device
identification, the adjustable parameters, the corresponding
data type and the permitted limit values for the configuration of
the device from the GSD. Some keywords are mandatory, e.g.
Vendor_Name; others are optional, e.g. Sync_Mode_supported.
The GSD file (ABB_OAD4_1001.gsd) for Profibus-enabled
Navigator 600 Series analyzers conforms to the Profibus
standard.
Fig. 2.1 Typical Profibus Network
Transmission Rate
(bits/sec)
Maximum Segment
Length (m)
Maximum Total
Network Length (m)
9.6 to 93.75k 1200 4800
187.5k 1000 4000
500k 400 1600
1.5M 200 800
3 to 12M 100 400
Table 2.1 Cable Length
Profibus DP
Profibus PA
Navigator
600
DP/PA
Link
Ethernet TCP/IP
Characteristic impedance 135 to 165Ω
Capacitance per unit length <30 pf/m
Loop resistance 110Ω/km
Core diameter 0.64mm
Core cross section >0.34mm
2
Operational
Level
Master
Level
Slave
Level

ABB Navigator 600 Series Specifications

General

Brand	ABB
Model	Navigator 600 Series
Category	Measuring Instruments
Language	English