Lauda RE 415 G - Control Parameters; Internal Control Variable (Internal Temperature Sensor)

106 / 134 ECO Gold 09/2021
18 Control parameters
The control parameters have been optimized at the factory for operation as a bath thermostat (with water as the heat
transfer liquid) with internal control. The standard parameters are already set as default also for the thermostatic control
of external applications with external control.
Depending on the application, the configuration can be adapted from case to case as required. Also the thermal capacity
and the viscosity of the heat transfer liquid affect the control behavior.
Note: Only change the control parameters if you have adequate knowledge of control techniques.
18.1 Internal control variable (internal temperature sensor)
If you have not connected any temperature sensor, read further here. For activated external control read ( 18.2).
The control corresponds to the set-point temperature with the current bath temperature and calculates the set value for
heating or cooling.
These control parameters can be set:
Description
Short form
Unit
Proportional range
Xp
K
Reset time
Tn
s
Derivative time
Tv
s
Damping time
Td
s
If "Tv manual/auto" is set to "auto" (automatic), Tv and Td cannot be changed. They are in this case derived from Tn
with fixed factors.
Consider the effect of the temperature limits Tih and Til ( 7.4.5) on the control.