Surge protection
5981_en_06
PHOENIX CONTACT
39
5.2
Surge protection for the power supply and the
entire control cabinet
To protect the control cabinet power supply, Phoenix Contact offers the VALVETRAB surge
arrester (see TRABTECH catalog from Phoenix Contact.
Figure 5-6 illustrates an example of the surge protection circuitry for a field multiplexer
station. The most important components are shown there, and have the following
meanings:
The terminals are to be arranged in such a way that the connecting cables are as short as
possible, and that they do not lie in parallel to unshielded cables.
Effective overvoltage protection can only be achieved with full equipotential bonding.
Inclusion of the module DIN rail in the equipotential bonding can be implemented, for
example, with the universal USLKG 5 ground terminal block, Order No. 0441504 (see
Section 9.2, “Ordering data” or the CLIPLINE catalog from Phoenix Contact).
1
Grounding terminals for DIN rail (e.g., UT 10)
2
Surge protection for the control cabinet power supply (e.g., VAL-CP-1S-350)
3
Surge protection for the input/output channels (e.g., PT 4X1-24AC-ST, PT 4X1+F-BE)
4
Surge protection for the remote bus cable (e.g., PT 3-PB-ST, PT 1X2+F-BE)
5
Remote bus cable
6
Field multiplexer supplies
7
Grounding of the metal switch cabinet
8
Other loads with separate power supplies
The variety of possible input and output signals calls for various overvoltage protection
measures. The surge arresters from the TERMITRAB, COMTRAB and PLUGTRAB series
offer the right protection for every application. Comprehensive advice can be found in the
TRABTECH catalog from Phoenix Contact.
Please contact Phoenix Contact if you have more specific questions.
Summary of Contents for 2861205
Page 1: ...User manual Configuring and installing the Inline field multiplexer...
Page 6: ...IB IL 24 MUX MA PAC 6 PHOENIX CONTACT 5981_en_06...
Page 26: ...IB IL 24 MUX MA PAC 26 PHOENIX CONTACT 5981_en_06...
Page 64: ...IB IL 24 MUX MA PAC 64 PHOENIX CONTACT 5981_en_06...
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