2.4.3 Disabling Line-To-Ground Transient Protection - Siemens SIMATIC NET RUGGEDCOM M969 Installation Manual

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Installing the Device
2.4.3 Disabling Line-to-Ground Transient Protection
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3
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5
Figure 2.8
2.4.3
Disabling Line-to-Ground Transient Protection
All line-to-ground transient energy is shunted to the Surge Ground terminal. In cases
where users require the inputs to be isolated from ground, remove the ground braid
between Surge and Chassis Ground. All line-to-ground transient protection circuitry
will be disabled.
Figure 2.9
16
Ground Bus
300 VDC Breaker
DC Power Source (PS2)
DC Power Source (PS1)
DC and DC Power Supply Wiring Example
Surge Ground/Chassis Ground Connection
RUGGEDCOM M969
Installation Manual, 01/2021, C79000-G8976-1039-03

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