25
ERROR MESSAGES
ERROR
POTENTIAL CAUSES
SOLUTION
Laser output disabled due to key switch
Key switch not properly configured.
Ensure the key switch is in the unlocked
position for output current to flow.
Laser output disabled due to BNC interlock
No connection made at the rear panel
ACTIVE LOCK.
Either the provided BNC terminator, or a
user interlock connection must be made
to the ACTIVE LOCK at the rear panel for
output current to flow.
Laser output disabled due to D-SUB
interlock
Passive interlock pins not shorted at the
LD D-SUB.
Ensure the interlock pins (Pins 2 & 3) on
the LD D-SUB are shorted together.
TC output turned off due to sensor short
Sensor connections are shorted.
Ensure the chosen sensor is properly
wired.
TC output turned off due to sensor open
Sensor is wired to the wrong pins.
Ensure the chosen sensor is properly
wired.
TEC Load open
No thermoelectric is present.
Ensure the thermoelectric is properly
wired.
TEC Load short
Thermoelectric connections are shorted
together.
Ensure the thermoelectric is properly
wired.
Internal overtemp condition
The ambient air temperature is too high for
the instrument.
Reduce the ambient air temperature to
50°C or less.
IntelliTune aborted
User cancelled the IntelliTune scan.
Change the desired settings and begin the
IntelliTune scan again.
Zero value TC current limit
TC current limits are set to zero.
Increase the TC current limits, and begin
the IntelliTune scan again.
Insufficient TC current limit
TC current limits are too low. The
instrument can't drive enough current to
reach setpoint.
Increase the TC current limits, and begin
the IntelliTune scan again.
Temperature going in the wrong direction.
IntelliTune aborted.
TEC polarity is reversed.
Reverse the connection to TEC+ and
TEC- and begin the IntelliTune scan again.
Inadequate heat sinking.
Load may be in thermal runaway. Increase
heatsinking and/or airflow and begin the
IntelliTune scan again.
TC output Disabled. IntelliTune aborted.
User turned TC output current off.
With output current disabled, begin the
IntelliTune scan again.
Start IntelliTune with the TC output off.
TC output current was enabled when the
IntelliTune scan attempted to begin.
Ensure the TC output current is disabled,
and begin the IntelliTune scan again.
Can't run IntelliTune in Manual Tuning
mode.
IntelliTune mode set to Manual Tuning.
Ensure the IntelliTune mode is in either
Disturbance Rejection or Setpoint
Response, and begin the IntelliTune scan
again.
Starting actual temperature was too close
to setpoint
To start an IntelliTune scan, actual
temperature cannot be too close to
setpoint temperature.
Change the setpoint at least 5°C away
from ambient and begin the IntelliTune
scan again.
Recall OR Save Error
Bad internal SD card
Contact the factory
Sensor change. Output current disabled.
Output was enabled while changing the
sensor.
Disable the output current before
configuring/changing the sensor.
TC output disabled due to reaching upper
or lower temperature limit.
Temperature range limit is not large
enough for system.
If limits can be increased without damage
to the load, increase the temperature
limits.
System in thermal runaway.
If you see the temperature continually
rising, consult Technical Note
Optimizing Thermoelectric Temperature
.
