Fault Indicators - ILX Lightwave LDT-5412 User Manual

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C H A P T E R

Fault Indicators

The LDT-5412 has two visual front panel fault indicators, OPEN THERM and
LIMIT.
• OPEN THERM - indicates that the externally connected thermistor or set point resistor is
open. Most commonly this happens when there is no load attached to the output or the load
becomes disconnected when the output is active. When an OPEN THERM condition occurs,
the LDT-5412 output is automatically turned off. The OPEN THERM indicator will remain on
until the fault is corrected and the OUTPUT is manually turned on again.
• LIMIT - indicates that the LDT-5412 output is being limited to the setting of the front panel
LIMIT knob. When a LIMIT condition occurs, the LIMIT indicator becomes lit.
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 LDT-5412
O P E R A T I O N
Front Panel