Siemens ST950 Plus+ User Manual page 76

ST950 Plus+ User Manual
If there is a requirement for a third filter signal (Third Green);
•
An extra RAG node will be provided and is expected to be mounted within the
aspect associated with the third filter (Third Green). In this case the Third Green
is connected to SK2 of the additional RAG node.
Green Arrow : Green2
The Green-Arrow Optic in side-boxes always connects to the Green2 Output of a RAG Node.
This is the case even when a second dedicated RAG Node is required for a second Green-Arrow
side box, where Green2 is the only connection used on that RAG Node.
RAG Node Signal Connector Types
The connector for the Green signals (Green1 or Green2) cannot be mixed with the Amber or
Red connector positions. However, The Red and Amber do have the same connector type. A
small Red tag is added to the 'Red' signal cable to assist in identification. However, if the two
connectors are reversed neither aspect will light and a fault will be registered at the controller.
ST950 Plus+ User Manual
Figure 39 : RED Signal Aspect showing Red Tag.
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