TEC247 Fire & Extinguishant Control Panel
– INSTALLATION & OPERATION MANUAL
DOC NO. PRMAN-0003 TEC247 Rev 04.12 191209.docx
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E. &O.E.
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The Charger Fault LED will be solid on to indicate the charger is still off due to the additional current drawn on
the output.
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The 24 V DC output remains active.
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When current draw is reduced to below 1.2 A, LED indications, relay, DC Supply Fault output and charger will
restore automatically within 30 seconds.
▪
Overload Mode
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Should the current draw exceed 1.8 A, the 24 V DC Output Fault LED will flash and the battery charger circuit
will be shut down.
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If the 24 V DC output current draw exceeds 1.8 A for more than 10 minutes, the General Fault relay, and the
24 V DC output LED will be on solid. DC Supply Fault output will be 0 V DC
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The output will shut down and attempt to restore every 30 seconds, this will continue until the load is reduced
to below 1.8 A.
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The charger will automatically switch back on.
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When current draw is reduced to below 1.8 A, the 27.5 V DC output will restore automatically after 30
seconds into BOOST MODE condition. General Fault relay remains ON and Supply Fault DC output remains
0 V DC
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When current draw is reduced to below 1.2 A, the relay, DC Supply Fault output and charger will restore
automatically within 30 seconds. The Output Fault LED will be solid on and will require a hard or soft reset to
clear.
5.
FAULT RELAYS/OUTPUTS
The power supply is provided with two potential free relays dedicated as follows:
▪
AC Supply Fault Relay
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Common PSU Fault Relay
A 26 V DC Supply Fault output is also provided for fault monitoring to an opto input. This output follows the
condition of the General Fault relay. If a general fault is present on the power supply, the 26 V DC will drop to 0 V
DC. Connect the opto input
’s positive to Supply Fault and the negative to Output GND – refer to FIGURE 7:
FIGURE 7
PSU RELAYS
NB:
A full load test is performed every 4 hours. If this fails, then the respective LED indications and the
Common Fault Relay will be activated.