General Operating Procedures; Warm-Up And Environmental Considerations; Temperature Mode Operation - ILX Lightwave LDT-5500B Series User Manual

General Operating Procedures

The following sections present some guidelines for operation, as well as some
common operating procedures.

Warm-Up and Environmental Considerations

Operate the LDT-5500B Series Temperature Controller at an ambient temperature
in the range of 0 to +40°C. Storage temperatures should be in the range of -40 to
+70°C. To achieve rated accuracy, let the LDT-5500B Series Temperature
Controller warm up for about 1 hour before use.

Temperature Mode Operation

You can operate the LDT-5500B Series Temperature Controller in several modes,
constant current (I TE), constant thermistor resistance (R), or constant
temperature (T). This example is for constant temperature (T) mode.
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a Plug the LDT-5500B Series Temperature Controller into an AC power source
supplying the correct voltage and frequency for your unit (refer to the back panel for
the correct ratings).
b Turn on the LDT-5500B Series Temperature Controller. The OUTPUT stage will be
disabled at power up and the unit will automatically configure its parameters to the
state which existed when the power was last shut off.
c If the ENABLE indicator on the front panel is not lit, press the ENABLE switch so the
indicator is lit (adjustment enabled). Press the mode SELECT switch until T mode is
selected.
d Check the setting of the SENSOR SELECT switch for the desired operation. The
sensor code will be displayed for two seconds during the power-up sequence.
e Press the parameter SELECT switch and the values of I LIMIT, T LIMIT, GAIN, and
CONST to ensure that they are adequate for the thermal load connected to the
controller.
f Use the ADJUST knob to change the temperature set point until the desired value is
displayed.
Note: In some cases, a greater than 0.1
attained by using R mode with the appropriate resistance value.
g Enable the TEC output by pressing the output on switch. The unit will automatically
control the temperature to the set point.
h When the unit is powered off, the state of the unit at power-down is saved in non-
volatile memory.
O P E R A T I O N
General Operating Procedures
o
C temperature set point resolution may be
2
C H A P T E R
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LDT-5500B Series
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