MESSTEC Power Converter GmbH
Operating Manual
TEC Controller
Document: 10100920OM
Revision: 1.1
Date: 10.10.2019
Page 45/71
8. Configuration in Detail
8.1. HW Setpoint
The signal processing behavior of the input CA-SETPOINT can be configured in
many ways to fit the best application setup. Following description applies to all
possible wiring cases of this input (internal / external potentiometer, voltage source).
In any case, figure 29 shows the basic transfer function, with no minimum and
maximum temperature set (default setting).
Fig. 29: Basic transfer function
The red curve shows the relationship between HW-Setpoint-Voltage (input voltage)
and the temperature setpoint. With default settings (minimum temperature: 0 °C,
maximum temperature: 50 °C) the relationship is linear.
Example:
A voltage of 2 V at the input CA-SETPOINT will lead to a setpoint
temperature of 20 °C (see green arrows 1 and 2).
Supplementary detailed information:
The relationship between the setpoint temperature and the HW-Setpoint-Voltage is:
𝜗 = 𝑈
𝐻𝑊−𝑆𝐸𝑇𝑃𝑂𝐼𝑁𝑇
∗ 10
°𝐶
𝑉
and accordingly:
𝑈
𝐻𝑊−𝑆𝐸𝑇𝑃𝑂𝐼𝑁𝑇
=
𝜗
10
°𝐶
𝑉