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PRODUCT INSTALLATION MANUAL
1.2.3.
RS-485 L
INE
Communication Port
Communication Speed
Multi-Drop Addressing
Multi-Network Operation
Network Addressing
Network Capacity
SMART Protocol Supported
Total Number of Bits
Number of Data Bits
Parity
Number of Stop Bits
Transmission Type
1.3.
Q
UALITY
Pepperl+Fuchs is an ISO9000 certified company and as such all production is performed under a Quality
Assurance program following written procedures which are specific for each product family. During the
manufacturing, intermediate testing and inspection, and final inspection phases all products are built
according to controlled documentation.
Each MUX 2700 unit undergoes accelerated thermic aging (burn-in) for a minimum 200 hours at 50°C
(122°F) with at least 1 cooling thermic cycle at 0°C (32°F) and back to 50°C (122°F). The purpose is to
identify weak components that may develop initial fault mechanisms due to "Infant Mortality". Only after a
positive burn-in test does the MUX 2700 undergo a complete final inspection which is performed with
computerized testing equipment specifically developed by P+F for this purpose.
1.4.
S
I
AFETY
The following is assumed for SIL installations:
1.) Loss of 24V supplies results in 4-20mA loop going to 0mA and field devices going to safe state.
2.) A short in the 4-20mA loop will result in field device going to safe state, DCS would need sensor at field
device to know of short.
3.) An open in the 4-20mA loop will result in the field device going to safe state. DCS will know loop is open
since it can't regulate current.
4.) DCS system will not produce an accurate 4-20mA signal if HART signal is present at terminals for DCS.
.
WARNING!
The boards may have deviations in the converted signal values by too high potential
difference between the negative supply terminal for powering the electronics and earth
ground, or by ground loops present in the installation.(See section 2.7.1and 2.7.2 below for
further details.)
Ensure that the grounding of the installation is appropriate for industrial applications. Follow
the rules for grounding as applicable in the place of installation.
S
PECIFICATIONS
A
SSURANCE
L
(SIL)
NTEGRITY
EVEL
DOCT-B3K4
RS-485, differential pair (isolated)
9600 or 19200 baud
Up to 31 MUX 2700 modules with 32
channels each
Software selectable
Up to 4 serial lines
Up to 31 MUX 2700 modules
Up to 992 loops
HART
11
8
Odd
1
2 wire
P
6
18
AGE
OF
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