Copyright © 2017 Thorlabs
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TED4015
3.8 Temperature Protection
The TED4015 temperature controller provides an adjustable
Temperature Window
to monitor
the correct function of the temperature control. The display shows a “plus / minus“ value, so if
you select i.e. 5 °C, the window will reach from 5 °C below the temperature setpoint to 5 °C
above the temperature setpoint.
If the actual temperature moves out of the preset window, the green LED in the ON key (F5,
see Figure 1 at chapter
Operating elements at the front panel
) is flashing and the temperature
protection indicator flashes up.
To avoid multiple sets and resets of the window protection error in transient oscillation or during
tuning steps, you can adjust an appropriate
Protection Reset Delay
. A value between 50%
and 100% of the oscillation period is recommended. With this setting, the window protection will
reset only if the actual temperature remains inside the window for a sufficient time, indicating a
stable settling to the temperature set point.
