Structure With Motherboard Solutions - Pepperl+Fuchs KFD2-HMM-16 Manual

2.3.6

Structure with motherboard solutions

For applications in hazardous areas, motherboard solutions are employed. Motherboards serve as carriers
for Ex-isolation modules, such as current repeaters and isolated transformers and have connections both
for power supply, one or more HART system connectors suitable for the family of multiplexer devices and
a control system-specific connector for direct connection to the control system. Such a system is shown in
Figure 2.6.
The distinguishing characteristics of the MB-*** in detail:
• Power feed (also redundant) with fuses and LEDs
250 Ω resistance
•
• Control system-specific connector (also redundant)
• Control system-specific arrangement of the Ex-isolation modules (Number and type)
Ex
Motherboard
with isolation modules
supply
Redundant
Power supply
Figure 2.6: System with motherboard
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
Up to 16 field devices
1 23 1 23 1 23 1 23 1 23
4 4 4 4 4
PWR PWR PWR PWR
KFD2- KFD2- KFD2- KFD2- KFD2-
STC4-Ex2 STC4-Ex2 STC4-Ex2 STC4-Ex2 STC4-Ex2
7 8 7 8 7 8 7 8 7
10 10 10 10 10
13 14 13 14 13 14 13 14 13
Slave Master
K F D 2 - H M M - 1 6
or
ON
ON
13 14 15 16 17 18
K F D 0 - H M S - 1 6
19 20 21
HART Multiplexer Master KFD2-HMM-16
1 23 1 23 1 23
4 4 4
PWR PWR PWR PWR
KFD2- KFD2- KFD2-
STC4-Ex2 STC4-Ex2 STC4-Ex2
Connection
8 7 8 7 8 7 8
10 10 10
14 13 14 13 14 13 14
via system
connector
RS 485
Product description
Process control system
Service station
Management
Software
Copyright Pepperl+Fuchs, Printed in Germany
19