4.11Connecting temperature sensors
Figure 4-17Connecting a PTC sensor
You connect the temperature sensors via the PTC terminal points on the “Input” connector.
You can use both PTC chains and Pt 1000 sensors. The configuration of this is performed in the web-based management (see “Monitoring | Derating” on page 92).
For “PTC” operating mode, specify a resistance value at which the charging process will be interrupted. Reactivation is performed with a hysteresis of 3%.
For “PT1000” operating mode, a temperature range is defined in which the charging current is derated. The respective temperatures are assigned a current value that is still permissible for derating at the relevant temperatures. When the start temperature is reached (1), the charging controller commences derating. Linear interpolation of the permissible current (A B) occurs between the two limit temperatures. When the stop temperature is reached (2), the current setting is set to 0 A. The method of operation is shown in Figure 4-18.
Figure 4-18Derating curve for temperature measurement with Pt 1000 resistor