Specifications
AS-Interface slaves
Modules with special functions
Overvoltage protection module
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Siemens IK PI · 2012
6
■
Overview (continued)
Configuration guidelines
Configuration guidelines for overvoltage protection modules
The grounding of protection modules and the units to be pro-
tected must be effected through a shared grounding point
(equipotential bonding). If insulated devices are protected, their
mounts must be included in the grounding points.
Sample application
Sample application for overvoltage protection modules
■
Selection and ordering data
AS-
Inter-
face
AS-
Inter-
face
NSA0_00093a
OVP = Overvoltage protection
Mounting plate
Application
Device with
ground terminal
Device without ground terminal
→ Grounding of the mounting plate
Application
OVP
NSA0_00092a
AS-
Inter-
face
AB
AS-
Inter-
face
AS-
Inter-
face
AS-
Inter-
face
OVP = Overvoltage protection
OVPOVP
protected range
Zone 1 Zone 1Zone 2
Protection approx. 5 m to the right
Equipotential bonding
(system earth)
Protection approx. 0.5 m to the left
Version Order No.
3RK1 901-1GA00
Overvoltage protection module
3RK1 901-1GA01
Kap_06_en.book Seite 72 Freitag, 2. September 2011 1:42 13
© Siemens AG 2011