To Connect Analyzer A Signal And Alarm Cables - Endress+Hauser SpectraSensors 2-Pack Analyzer System Hardware Installation And Maintenance Manual

2-Pack Analyzer System
The Concentra High Alarm (Analyzer A), Assignable Alarm (Analyzer B)
and General Fault Alarm trigger SPDT relays located inside the respective
analyzer electronics enclosures.
The relays for the Concentra High Alarm and Assignable Alarm are
configured to be normally de-energized with the dry contact changing state on
alarm. The Concentra High Alarm and Assignable Alarm outputs can be
wired for OPEN or CLOSED depending on which terminals are used normally
open (NO) or normally closed (NC).
The relay for the General Fault Alarm for each analyzer is configured to be
fail-safe (or normally energized) so the dry contact will open in the event of
power loss or General Fault Alarm. Thus, the cables for each General Fault
Alarm should be wired to the common and NO terminals.
Connections can be made with customer supplied cables for the current loops
and alarms and factory-supplied cables for the serial connections. Refer to the
wiring diagram in Appendix A.
Hazardous voltage and risk of electric shock. Be sure power
to the analyzer is turned off before opening either electronics
enclosure and making any connections.
To connect Analyzer A signal and alarm cables
1. Disconnect power from analyzer and open the Analyzer A electronics
enclosure cover. Take care not to disturb the electrical assembly
inside.
Hazardous voltage and risk of electric shock. Be sure power
to the analyzer is turned off before opening the electronics
enclosure and making any connections.
2. Run conduit from the signal/alarm receiving station to the conduit
hub in the upper left-hand corner of the Analyzer A electronics
enclosure labeled for signal input/output. Refer to "Application of
conduit lubricant" on page 3-10 and analyzer drawings in
Appendix A.
Conduit seals should be used where appropriate in compliance
with local regulations.
3. Pull the customer supplied cables for the current loop, alarms, digital
input, Ethernet and the serial cable through the conduit into the
Analyzer A electronics enclosure. (No connections are required for
the analyzer to run and function properly. Only make connections for
signals that will be used for communication with the analyzer).
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