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2.4 PROFIBUS-PA connection
Connect the bus cable as shown in the figure.
•
Connect cable cores to terminals 4 and 4.1.
•
Polarity reversal will not have any effect.
•
The cable shield should be connected with
minimum length to the ground PE.
PROFIBUS-PA with Current Output
Current
Fieldbus
Output
5 6 4 4.1 4.2
-
+
4-20mA
PROFIBUS-
U=8-30V
PA
3. Menu settings for PROFIBUS-PA
For a detailed description please check the Installation and Operating Instructions manual of the device. The
following settings need to be made for operation of the BM 100 A on a PROFIBUS-PA network. Note that the service
"set slave address" is not being supported. Therefore the address can only be set by way of the local display and
operator interface.
Function (Fct.)
Input range
1.6.1 BAUDRATE
Select
1.6.2 ADDRESS
Input
The Profibus address can be changed via the Profibus service "Set_Slave_Address". The input range is 0...125
according to the Profibus specification. Address 126 is the default address and cannot be set via Profibus.
4. Technical data
Hardware
Physical
to IEC 61158-2 and the FISCO model
Bus characteristics
9... 30 V; 0.3 A max. ; 4.2 W max.
Base current
10 mA
FDE
yes: separate fault disconnection electronics
provided
Fault current
6 mA; (fault current = max. continuous
current – base current)
Starting current
lower than base current
"Ex" approval
EEx ia IIC T6 or EEx ib IIC/IIB T6 in
conformity with the FISCO model
Connection
independent of polarity
KROHNE Messtechnik GmbH & Co. KG · Ludwig-Krohne-Str. 5
Tel.: 0203-301 309
Supplementary documentation BM 100 A with PROFIBUS-PA
Power
Supply
11 12
Shield
PE
19200 Bd.
0 ... 126
, PROFIBUS Ident-No. EE01
Fax: 0203-301389 · e-mail: krohne@krohne.de
R
•
The equipotential bonding conductor must be
connected to the device, if necessary via the
outer U-clamp ground terminal.
Description
This is the baudrate of the internal communication interface of the device
(not PROFIBUS-PA). The value must not be changed.
Settings out of the range will be ignored. If out of range 126 will be used as
default value.
Address can be changed via local display or via Profibus.
Software
GSD
all KROHNE GSD files supplied on diskette
Device profile
complete implementation of Profile B, V2.0
Functional blocks level [m], distance [m], in addition volume [m
as cyclic value plus status
mentioned units are default units
Address range
0-126, default 126,
"set slave address" not supported
Operator control
local display and operator interface at device
SAP`s
1; typically the number of service access points
is equal to the number of class 2 masters
(operating tools) which can be operated
simultaneously
D-47058 Duisburg
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